10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2013

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File No. 001-08430

McDERMOTT INTERNATIONAL, INC.

(Exact name of registrant as specified in its charter)

REPUBLIC OF PANAMA	72-0593134
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)
757 N. ELDRIDGE PKWY HOUSTON, TEXAS	77079
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s Telephone Number, Including Area Code: (281) 870-5000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

The number of shares of the registrant’s common stock outstanding at July 29, 2013 was 236,571,152.

McDERMOTT INTERNATIONAL, INC.

INDEX—FORM 10-Q

	PAGE
PART I—FINANCIAL INFORMATION
Item 1—Condensed Consolidated Financial Statements		3
Condensed Consolidated Statements of Income (Loss)—(Unaudited) Three Months and Six Months Ended June 30, 2013 and 2012		3
Condensed Consolidated Statements of Comprehensive Income (Loss)—(Unaudited) Three Months and Six Months Ended June 30, 2013 and 2012		4
Condensed Consolidated Balance Sheets—(Unaudited) June 30, 2013 and December 31, 2012		5
Condensed Consolidated Statements of Cash Flows—(Unaudited) Six Months Ended June  30, 2013 and 2012		6
Condensed Consolidated Statements of Equity—(Unaudited) Six Months Ended June 30, 2013 and 2012		7
Notes to Condensed Consolidated Financial Statements—(Unaudited)		8
Item 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations		32
Item 3—Quantitative and Qualitative Disclosures about Market Risk		49
Item 4—Controls and Procedures		49
PART II—OTHER INFORMATION
Item 1—Legal Proceedings		50
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds		50
Item 5—Other Information		50
Item 6—Exhibits		51
SIGNATURES		52

PART I—FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands, except share and per share amounts)
Revenues	$	647,250		$	889,248		$	1,454,738		$	1,616,926
Costs and Expenses:
Cost of operations		723,259			759,704			1,436,073			1,357,138
Selling, general and administrative expenses		52,617			47,482			104,843			94,093
(Gain) loss on asset disposals		(13	)		29			(14,729	)		(197	)
Restructuring expenses		15,462			—			15,462			—
Total costs and expenses		791,325			807,215			1,541,649			1,451,034
Equity in Loss of Unconsolidated Affiliates		(5,461	)		(2,651	)		(9,592	)		(6,334	)
Operating Income (Loss)		(149,536	)		79,382			(96,503	)		159,558
Other Income (Expense):
Interest income, net		428			1,585			770			3,219
Gain on foreign currency—net		8,904			1,256			6,378			10,697
Other income (expense)—net		(31	)		51			751			(530	)
Total other income (expense)		9,301			2,892			7,899			13,386
Income (loss) from continuing operations before provision for income taxes and noncontrolling interests		(140,235	)		82,274			(88,604	)		172,944
Provision for Income Taxes		5,902			28,345			33,215			57,088
Income (loss) from continuing operations before noncontrolling interests		(146,137	)		53,929			(121,819	)		115,856
Total income from discontinued operations, net of tax		—			—			—			3,497
Net Income (Loss)		(146,137	)		53,929			(121,819	)		119,353
Less: Net Income Attributable to Noncontrolling Interests		3,286			1,190			7,051			3,856
Net Income (Loss) Attributable to McDermott International, Inc.	$	(149,423	)	$	52,739		$	(128,870	)	$	115,497
Earnings (Loss) per Common Share:
Basic:
Income (loss) from continuing operations, less noncontrolling interests		(0.63	)		0.22			(0.55	)		0.48
Income from discontinued operations, net of tax		—			—			—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22			(0.55	)		0.49
Diluted:
Income (loss) from continuing operations, less noncontrolling interests		(0.63	)		0.22			(0.55	)		0.47
Income from discontinued operations, net of tax		—			—			—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22			(0.55	)		0.49
Shares used in the computation of earnings per share:
Basic		236,199,438			235,681,213			236,070,311			235,444,733
Diluted		236,199,438			237,460,765			236,070,311			237,396,697

See accompanying notes to condensed consolidated financial statements.

3

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Net Income (Loss)	$	(146,137	)	$	53,929		$	(121,819	)	$	119,353
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs		3,215			2,681			6,870			5,726
Unrealized gain on investments		40			431			441			1,128
Translation adjustments		(6,734	)		3,326			480			6,439
Unrealized gain (loss) on derivatives		(55,578	)		(18,216	)		(71,040	)		(24,103	)
Realized loss on derivatives		3,066			1,107			962			2,401
Other comprehensive income (loss), net of tax(1)		(55,991	)		(10,671	)		(62,287	)		(8,409	)
Total Comprehensive Income (Loss)	$	(202,128	)	$	43,258		$	(184,106	)	$	110,944
Less: Comprehensive Income Attributable to Noncontrolling Interests.		3,271			1,138			7,024			3,957
Comprehensive Income (Loss) Attributable to McDermott International, Inc.	$	(205,399	)	$	42,120		$	(191,130	)	$	106,987

(1) The tax impacts on amounts presented in other comprehensive income (loss) are not significant.

See accompanying notes to condensed consolidated financial statements.

4

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

	June 30, 2013			December 31, 2012
	(Unaudited) (In thousands, except share and per share amounts)
Assets
Current Assets:
Cash and cash equivalents	$	427,711		$	640,147
Restricted cash and cash equivalents		24,486			18,116
Accounts receivable—trade, net		318,725			428,800
Accounts receivable—other		65,627			75,461
Contracts in progress		623,930			560,154
Deferred income taxes		7,722			9,765
Assets held for sale		1,396			2,679
Other current assets		39,716			54,667
Total Current Assets		1,509,313			1,789,789
Property, Plant and Equipment		2,231,319			2,115,176
Less accumulated depreciation		(845,362	)		(833,385	)
Net Property, Plant and Equipment		1,385,957			1,281,791
Investments		21,044			26,750
Goodwill		41,202			41,202
Investments in Unconsolidated Affiliates		28,675			37,435
Assets Held for Sale		12,243			26,758
Other Assets		197,513			129,902
Total Assets	$	3,195,947		$	3,333,627
Liabilities and Equity
Current Liabilities:
Notes payable and current maturities of long-term debt	$	42,531		$	14,146
Accounts payable		434,783			400,007
Accrued liabilities		328,168			369,418
Advance billings on contracts		301,426			241,696
Deferred income taxes		15,526			10,758
Income taxes payable		37,112			76,986
Total Current Liabilities		1,159,546			1,113,011
Long-Term Debt		53,104			88,562
Self-Insurance		25,413			22,641
Pension Liability		24,350			25,069
Other Liabilities		167,635			132,239
Commitments and Contingencies
Stockholders’ Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 243,928,572 and 243,442,156 shares at June 30, 2013 and December 31, 2012, respectively		243,929			243,442
Capital in excess of par value		1,400,386			1,391,271
Retained earnings		316,886			445,756
Treasury stock, at cost, 7,364,866 and 7,574,903 shares at June 30, 2013 and December 31, 2012, respectively		(99,184	)		(98,725	)
Accumulated other comprehensive loss		(156,673	)		(94,413	)
Stockholders’ Equity—McDermott International, Inc.		1,705,344			1,887,331
Noncontrolling Interests		60,555			64,774
Total Equity		1,765,899			1,952,105
Total Liabilities and Equity	$	3,195,947		$	3,333,627

See accompanying notes to condensed consolidated financial statements.

5

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Six Months Ended June 30,
	2013			2012
	(Unaudited)
	(In thousands)
Cash Flows From Operating Activities:
Net income (loss)	$	(121,819	)	$	119,353
Less: Income from discontinued operations, net of tax		—			3,497
Income (loss) from continuing operations	$	(121,819	)	$	115,856
Non-cash items included in net income:
Depreciation and amortization		39,318			45,874
Drydock amortization		9,931			13,607
Equity in loss of unconsolidated affiliates		9,592			6,334
Gain on asset disposals and impairments—net		(14,729	)		(197	)
Restructuring charges		12,104			—
Provision (benefit) from deferred taxes		(4,314	)		1,194
Other non-cash items		9,790			10,858
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable		117,307			36,237
Net contracts in progress and advance billings on contracts		(4,051	)		(150,712	)
Accounts payable		24,413			4,074
Accrued and other current liabilities		(23,299	)		10,145
Pension liability and accrued postretirement and employee benefits		(25,973	)		15,426
Derivative instruments and hedging activities		(71,013	)		(24,204	)
Other assets and liabilities		(53,739	)		6,695
Net Cash Provided By (Used In) Operating Activities—Continuing Operations		(96,482	)		91,187
Cash Flows From Investing Activities:
Purchases of property, plant and equipment		(144,475	)		(131,661	)
Increase in restricted cash and cash equivalents		(6,370	)		(2,062	)
Purchases of available-for-sale securities		(8,637	)		(66,266	)
Sales and maturities of available-for-sale securities		34,031			125,895
Proceeds from the sale and disposal of assets		35,672			221
Other investing activities, net		(6,939	)		(2,292	)
Net Cash Used In Investing Activities—Continuing Operations		(96,718	)		(76,165	)
Net Cash Provided By Investing Activities—Discontinued Operations		—			60,671
Total Cash Used In Investing Activities		(96,718	)		(15,494	)
Cash Flows From Financing Activities:
Increase in debt		—			19,033
Payment of debt		(7,073	)		(2,988	)
Noncontrolling interests distributions and other		(11,243	)		(15,726	)
Other financing activities, net		(1,038	)		(2,638	)
Net Cash Used In Financing Activities—Continuing Operations		(19,354	)		(2,319	)
Effects of exchange rate changes on cash and cash equivalents		118			(168	)
Net increase (decrease) in cash and cash equivalents		(212,436	)		73,206
Cash and cash equivalents at beginning of period		640,147			570,854
Cash and cash equivalents at end of period—Continuing Operations	$	427,711		$	644,060
Supplemental Disclosures of Cash Flow Information:
Cash paid during the period for:
Income taxes (net of refunds)	$	72,363		$	47,403

See accompanying notes to condensed consolidated financial statements.

6

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

	Common Stock				Capital In Excess of Par Value			Retained Earnings			Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Stockholders’ Equity			Non- Controlling Interests			Total Equity
	Shares		Par Value
	(Unaudited) (In thousands, except share amounts)
Balance December 31, 2011		242,416,424	$	242,416	$	1,375,976		$	239,103		$	(95,827	)	$	(102,030	)	$	1,659,638		$	74,074		$	1,733,712
Net income		—		—		—			115,497			—			—			115,497			3,856			119,353
Other comprehensive income, net of tax		—		—		—			—			—			(8,510	)		(8,510	)		101			(8,409	)
Exercise of stock options		158,842		159		557			—			—			—			716			—			716
Share vesting		804,338		805		(805	)		—			—			—			—			—			—
Purchase of treasury shares		—		—		—			—			(2,896	)		—			(2,896	)		—			(2,896	)
Stock-based compensation charges		—		—		7,810			—			—			—			7,810			—			7,810
Distributions to noncontrolling interests		—		—		—			—			—			—			—			(15,726	)		(15,726	)
Balance June 30, 2012		243,379,604	$	243,380	$	1,383,538		$	354,600		$	(98,723	)	$	(110,540	)	$	1,772,255		$	62,305		$	1,834,560
Balance December 31, 2012		243,442,156	$	243,442	$	1,391,271		$	445,756		$	(98,725	)	$	(94,413	)	$	1,887,331		$	64,774		$	1,952,105
Net income		—		—		—			(128,870	)		—			—			(128,870	)		7,051			(121,819	)
Other comprehensive income, net of tax		—		—		—			—			—			(62,260	)		(62,260	)		(27	)		(62,287	)
Exercise of stock options		44,862		45		71			—			—			—			116			—			116
Share vesting		441,554		442		(442	)		—			—			—			—			—			—
Purchase of treasury shares		—		—		—			—			(1,083	)		—			(1,083	)		—			(1,083	)
Stock-based compensation charges		—		—		9,486			—			624			—			10,110			—			10,110
Noncontrolling interests distributions and other		—		—		—			—			—			—			—			(11,243	)		(11,243	)
Balance June 30, 2013		243,928,572	$	243,929	$	1,400,386		$	316,886		$	(99,184	)	$	(156,673	)	$	1,705,344		$	60,555		$	1,765,899

See accompanying notes to condensed consolidated financial statements.

7

McDERMOTT INTERNATIONAL, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

JUNE 30, 2013

(UNAUDITED)

NOTE 1—BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations

McDermott International, Inc. (“MII”), a corporation incorporated under the laws of the Republic of Panama in 1959, is a leading engineering, procurement, construction and installation (“EPCI”) company focused on designing and executing complex offshore oil and gas projects worldwide. Providing fully integrated EPCI services, we deliver fixed and floating production facilities, pipeline installations and subsea systems from concept to commissioning. We support these activities with comprehensive project management and procurement services, while utilizing our fully integrated capabilities in both shallow water and deepwater construction. Our customers include national, major integrated and other oil and gas companies, and we operate in most major offshore oil and gas producing regions throughout the world. In these notes to our unaudited condensed consolidated financial statements, unless the context otherwise indicates, “we,” “us” and “our” mean MII and its consolidated subsidiaries.

Basis of Presentation

We have presented our unaudited condensed consolidated financial statements in U.S. Dollars, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) applicable to interim reporting. Financial information and disclosures normally included in our financial statements prepared annually in accordance with accounting principles generally accepted in the United States (“GAAP”) have been condensed or omitted. Readers of these financial statements should, therefore, refer to the consolidated financial statements and the accompanying notes in our annual report on Form 10-K for the year ended December 31, 2012.

We have included all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation. These condensed consolidated financial statements include the accounts of McDermott International, Inc., its consolidated subsidiaries and controlled entities. We use the equity method to account for investments in entities that we do not control, but over which we have significant influence. We generally refer to these entities as “unconsolidated affiliates” or “joint ventures.” We have eliminated all intercompany transactions and accounts.

During the quarter ended June 30, 2013, we commenced a restructuring of our Atlantic segment. See Note 2 for information relating to that restructuring. On March 19, 2012, we completed the sale of our former charter fleet business, which operated 10 of the 14 vessels acquired in our 2007 acquisition of substantially all of the assets of Secunda International Limited (the “Secunda Acquisition”). The condensed consolidated statements of income, comprehensive income, cash flows and equity reflect the historical operations of the charter fleet business as a discontinued operation through March 19, 2012. Accordingly, we have presented the notes to our condensed consolidated financial statements on the basis of continuing operations. In addition, certain 2012 amounts in the condensed consolidated balance sheet and statement of cash flows have been reclassified to conform to the 2013 presentation.

Business Segments

We operate in four primary operating segments, which consist of Asia Pacific, Atlantic, Caspian and the Middle East. The Caspian and Middle East operating segments are aggregated into the Middle East reporting segment due to the proximity of regions and similarities in the nature of services provided, economic characteristics and oversight responsibilities. Accordingly, we report financial results under reporting segments consisting of Asia Pacific, Atlantic and the Middle East. We also report certain corporate and other non-operating

8

activities under the heading “Corporate and Other.” Corporate and Other primarily reflects corporate personnel and activities, incentive compensation programs and other costs, which are generally fully allocated to our operating segments. See Note 9 for summarized financial information on our segments.

Revenue Recognition

We determine the appropriate accounting method for each of our long-term contracts before work on the project begins. We generally recognize contract revenues and related costs on a percentage-of-completion method for individual contracts or combinations of contracts based on work performed, man hours, or a cost-to-cost method, as applicable to the activity involved. We include the amount of accumulated contract costs and estimated earnings that exceed billings to customers in contracts in progress. We include billings to customers that exceed accumulated contract costs and estimated earnings in advance billings on contracts. Most long-term contracts contain provisions for progress payments. We expect to invoice customers and collect all unbilled revenues. Certain costs are generally excluded from the cost-to-cost method of measuring progress, such as significant procurement costs for materials and third-party subcontractors. Costs incurred prior to a project award are generally expensed during the period in which they are incurred. Total estimated project costs, and resulting income, are affected by changes in the expected cost of materials and labor, productivity, vessel costs, scheduling and other factors. Additionally, external factors such as weather, customer requirements and other factors outside of our control may affect the progress and estimated cost of a project’s completion and, therefore, the timing and amount of revenue and income recognition.

In addition, change orders, which are a normal and recurring part of our business, can increase (and sometimes substantially) the future scope and cost of a job. Therefore, change order awards (although frequently beneficial in the long term) can have the short-term effect of reducing the job percentage of completion and thus the revenues and profits recognized to date. We regularly review contract price and cost estimates as the work progresses and reflect adjustments in profit, proportionate to the job percentage of completion in the period when those estimates are revised. Revenue from unapproved change orders is generally recognized to the extent of the lesser of amounts management expects to recover or costs incurred. The total unapproved change orders included in our estimates at completion aggregated approximately $445 million, of which approximately $170 million was included in backlog at June 30, 2013. Unapproved change orders that are disputed by the customer are treated as claims.

Deferred Profit Recognition

For contracts as to which we are unable to estimate the final profitability due to their uncommon nature, including first-of-a-kind projects, we recognize equal amounts of revenue and cost until the final results can be estimated more precisely. For these contracts, we only recognize gross margin when reliably estimable and the level of uncertainty has been significantly reduced, which we generally determine to be when the contract is at least 70% complete. We treat long-term construction contracts that contain such a level of risk and uncertainty that estimation of the final outcome is impractical as deferred profit recognition contracts. If while being accounted for under our deferred profit recognition policy, a current estimate of total contract costs indicates a loss, the projected loss is recognized in full and the project is accounted for under our normal revenue recognition guidelines.

We currently account for an Atlantic segment project under our deferred profit recognition policy. This project was awarded to one of our joint ventures, and the Atlantic segment’s backlog includes a subcontract from that joint venture, of which $211.9 million relating to this project remains in backlog at June 30, 2013. This project contributed revenues and costs equally, totaling approximately $37.0 million and $7.9 million for the three-month periods ended June 30, 2013 and 2012, respectively, and approximately $42.1 million and $13.1 million for the six-month periods ended June 30, 2013 and 2012, respectively.

9

Completed Contract Method

Under the completed contract method, revenue and gross profit is recognized only when a contract is completed or substantially complete. We generally do not enter into fixed-price contracts without an estimate of cost to complete that we believe to be accurate. However, it is possible that in the time between contract award and the commencement of work on a project, we could lose the ability to adequately forecast costs to complete based on intervening events, including, but not limited to, experience on similar projects, civil unrest, strikes and volatility in our expected costs. In such a situation, we would use the completed contract method of accounting for that project. We currently do not have any contracts that we account for under the completed contract method.

Claims Revenue

Claims revenue may relate to various factors, including the procurement of materials, equipment performance failures, change order disputes or schedule disruptions and other delays, including those associated with weather conditions. Claims revenue, when recorded, is only recorded to the extent of the lesser of the amounts management expects to recover or the associated costs incurred in our consolidated financial statements. We include certain unapproved claims in the applicable contract values when we have a legal basis to do so, consider collection to be probable and believe we can reliably estimate the ultimate value. Amounts attributable to unapproved change orders are not included in claims. We continue to actively engage in negotiations with our customers on our outstanding claims. However, these claims may be resolved at amounts that differ from our current estimates, which could result in increases or decreases in future estimated contract profits or losses. Claims are generally negotiated over the course of the respective projects and many of our projects are long-term in nature. None of the claims at June 30, 2013 were involved in litigation.

The amount of revenues and costs included in our estimates at completion (i.e., contract values) associated with such claims was $173.4 million and $29.0 million as of June 30, 2013 and 2012, respectively. Approximately 44%, 10% and 46% of those claim amounts at June 30, 2013 were related to our Asia Pacific, Atlantic and Middle East segments, respectively. These amounts are determined based on various factors, including our analysis of the underlying contractual language and our experience in making and resolving claims. For the three months ended June 30, 2013 and 2012, $11.0 million and $29.0 million, respectively, of revenues and costs are included in our financial statements. For the six months ended June 30, 2013 and 2012, $39.4 million and $38.5 million, respectively, of revenues and costs are reflected in our financial statements pertaining to claims. Approximately 14%, 13% and 73% of those claim amounts are related to our Asia Pacific, Atlantic and Middle East segments, respectively.

Our unconsolidated joint ventures also included an aggregate of $3.7 million of claims revenue and costs in their financial results for the six months ended June 30, 2013, with no amounts recognized during the three months ended June 30, 2013. For the three months and six months ended June 30, 2012, our joint ventures included approximately $1.0 million and $5.0 million, respectively of claims revenue and costs in their financial results.

Loss Recognition

A risk associated with fixed-priced contracts is that revenue from customers may not cover increases in our costs. It is possible that current estimates could materially change for various reasons, including, but not limited to, fluctuations in forecasted labor and vessel productivity, vessel repair requirements, weather downtime, supplier performance, pipeline lay rates or steel and other raw material prices. Increases in costs associated with our fixed-priced contracts could have a material adverse impact on our consolidated financial condition, results of operations and cash flows. Alternatively, reductions in overall contract costs at completion could materially improve our consolidated financial condition, results of operations and cash flows.

As of June 30, 2013, we have provided for our estimated costs to complete on all of our ongoing contracts. However, it is possible that current estimates could change due to unforeseen events, which could result in adjustments to overall contract costs. Variations from estimated contract performance could result in material

10

adjustments to operating results for any fiscal quarter or year. For all contracts, if a current estimate of total contract cost indicates a loss, the projected loss is recognized in full when determined.

We currently have three active projects in our backlog that are in loss positions at June 30, 2013, whereby future revenues are expected to equal costs when recognized. Included in these projects are a marine project in our Asia Pacific segment, which we began in 2012 and expect to complete by mid-2014, and a five-year charter in Brazil, which we began in early 2012 and we are conducting through our Atlantic segment. These two projects represent the majority of our contract value in a loss position.

Use of Estimates

We use estimates and assumptions to prepare our financial statements in conformity with GAAP. These estimates and assumptions affect the amounts we report in our financial statements and accompanying notes. Our actual results could differ from these estimates, and variances could materially affect our financial condition and results of operations in future periods. Changes in project estimates generally exclude change orders and changes in scope, but may include, without limitation, unexpected changes in weather conditions, productivity, unanticipated vessel repair requirements, customer and vendor delays and other costs. We generally expect to experience a variety of unanticipated events, and some of these events can result in significant cost increases above cost amounts we previously estimated. Variations from estimated contract performance could result in material adjustments to operating results.

The following is a discussion of our most significant changes in estimates, which impacted operating income in each of our segments for the three and six months ended June 30, 2013 and 2012.

Three months ended June 30, 2013

The Asia Pacific segment was primarily impacted by changes in estimates on one subsea project in Malaysia. On that project, we increased our estimated cost at completion by approximately $62.0 million in the three months ended June 30, 2013, primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime. In consideration of these factors, the expected completion date for the project was extended from the fourth quarter of 2013 to the middle of 2014.

The Middle East segment was impacted by changes in estimates on one of our EPCI projects in Saudi Arabia. On that project, we increased our estimated cost at completion by approximately $38.0 million in the three months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the three months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

The Atlantic segment was impacted by changes in estimates on two projects. On one of those projects, we recognized approximately $7.0 million of incremental project losses in the three months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. We also recognized project losses of approximately $3.0 million in the three months ended June 30, 2013 on a fabrication project in Morgan City, which was completed during the quarter ended June 30, 2013.

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Six months ended June 30, 2013

The Asia Pacific segment was primarily impacted by changes in estimates on one project. On this project (the project in Malaysia described above), we increased our estimated cost at completion by approximately $66.0 million in the six months ended June 30, 2013, primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime.

The Middle East segment was impacted by changes in estimates on the EPCI project in Saudi Arabia discussed above. On that project, we increased our estimated cost at completion by approximately $43.0 million in the six months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the six months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

The Atlantic segment was impacted by changes in estimates on one project. On that project, we recognized approximately $14.0 million of incremental project losses in the six months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013.

2012 Periods

Operating income for each of the three-month and six-month periods ended June 30, 2012 was not significantly affected by changes in estimates.

Loss Contingencies

We record liabilities for loss contingencies when it is probable that a liability has been incurred and the amount of loss is reasonably estimable. We provide disclosure when there is a reasonable possibility that the ultimate loss will exceed the recorded provision or if such loss is not reasonably estimable. We are currently involved in litigation and other proceedings, as discussed in Note 10. We have accrued our estimates of the probable losses associated with these matters, and associated legal costs are generally recognized in selling, general and administrative expenses as incurred. However, our losses are typically resolved over long periods of time and are often difficult to estimate due to various factors, including the possibility of multiple actions by third parties. Therefore, it is possible future earnings could be affected by changes in our estimates related to these matters.

Cash and Cash Equivalents

Our cash and cash equivalents are highly liquid investments with maturities of three months or less when we purchase them. We record cash and cash equivalents as restricted when we are unable to freely use such cash and cash equivalents for our general operating purposes. At June 30, 2013, all of our restricted cash was held in restricted foreign-entity accounts.

Investments

We classify investments available for current operations as current assets in the accompanying balance sheets, and we classify investments held for long-term purposes as noncurrent assets. We adjust the amortized

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cost of debt securities for amortization of premiums and accretion of discounts to maturity. That amortization is included in interest income. We include realized gains and losses on our investments in other income (expense)—net. The cost of securities sold is based on the specific identification method. We include interest earned on securities in interest income.

Investments in Unconsolidated Affiliates

We generally use the equity method of accounting for affiliates in which our investment ownership ranges from 20% to 50%. Currently, most of our significant investments in affiliates that are not consolidated are recorded using the equity method.

Accounts Receivable

Accounts Receivable—Trade, Net

A summary of contract receivables is as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	209,880		$	273,729
Completed contracts		61,450			38,858
Retainages		64,839			133,619
Unbilled		5,087			4,710
Less allowances		(22,531	)		(22,116	)
Accounts receivable—trade, net	$	318,725		$	428,800

We expect to invoice our unbilled receivables once certain milestones or other metrics are reached, and we expect to collect all unbilled amounts. We believe that our provision for losses on uncollectible accounts receivable is adequate for our credit loss exposure.

Contract retainages generally represent amounts withheld by our customers until project completion, in accordance with the terms of the applicable contracts. The following is a summary of retainages on our contracts:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	64,839	$	133,619
Retainages expected to be collected after one year		95,286		32,085
Total retainages	$	160,125	$	165,704

We have included in accounts receivable—trade, net, retainages expected to be collected within one year. Retainages expected to be collected after one year are included in other assets.

Accounts Receivable—Other

Accounts receivable—other was $65.6 million and $75.5 million at June 30, 2013 and December 31, 2012, respectively. The balance primarily relates to transactions with unconsolidated affiliates, receivables associated with our hedging activities and value-added tax. These amounts are expected to be collected within 12 months, and any allowance for doubtful accounts on our accounts receivable—other is based on our estimate of the

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amount of probable losses due to the inability to collect these amounts (based on historical collection experience and other available information). As of June 30, 2013 and December 31, 2012, no such allowance for doubtful accounts was recorded.

Contracts in Progress and Advance Billings on Contracts

Contracts in progress was $623.9 million and $560.1 million at June 30, 2013 and December 31, 2012, respectively. Advance billings on contracts was $301.4 million and $241.7 million at June 30, 2013 and December 31, 2012, respectively. A detail of the components of contracts in progress and advance billings on contracts is as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Costs incurred less costs of revenue recognized	$	83,354	$	65,321
Revenues recognized less billings to customers		540,576		494,833
Contracts in Progress	$	623,930	$	560,154

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Billings to customers less revenue recognized	$	467,049		$	394,352
Costs incurred less costs of revenue recognized		(165,623	)		(152,656	)
Advance Billings on Contracts	$	301,426		$	241,696

Fair Value of Financial Instruments

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. An established hierarchy for inputs is used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect our assumptions about the factors that market participants would use in valuing the asset or liability.

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

• Level 1—inputs are based upon quoted prices for identical instruments traded in active markets.

• Level 2—inputs are based upon quoted prices for similar instruments in active markets, quoted prices for similar or identical instruments in inactive markets and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets and liabilities.

• Level 3—inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models and similar valuation techniques.

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The carrying amounts that we have reported for financial instruments, including cash and cash equivalents, accounts receivables and accounts payable approximate their fair values. See Note 6 for additional information regarding fair value measurements.

Derivative Financial Instruments

Our worldwide operations give rise to exposure to changes in certain market conditions, which may adversely impact our financial performance. When we deem it appropriate, we use derivatives as a risk management tool to mitigate the potential impacts of certain market risks. The primary market risk we manage through the use of derivative instruments is movement in foreign currency exchange rates. We use foreign currency derivative contracts to reduce the impact of changes in foreign currency exchange rates on our operating results. We use these instruments to hedge our exposure associated with revenues and/or costs on our long-term contracts and other cash flow exposures that are denominated in currencies other than our operating entities’ functional currencies. We do not hold or issue financial instruments for trading or other speculative purposes.

In certain cases, contracts with our customers contain provisions under which some payments from our customers are denominated in U.S. Dollars and other payments are denominated in a foreign currency. In general, the payments denominated in a foreign currency are designed to compensate us for costs that we expect to incur in such foreign currency. In these cases, we may use derivative instruments to reduce the risks associated with foreign currency exchange rate fluctuations arising from differences in timing of our foreign currency cash inflows and outflows. See Note 5 for additional information regarding derivative financial instruments.

Foreign Currency Translation

We translate assets and liabilities of our foreign operations, other than operations in highly inflationary economies, into U.S. Dollars at period-end exchange rates, and we translate income statement items at average exchange rates for the periods presented. We record adjustments resulting from the translation of foreign currency financial statements as a component of accumulated other comprehensive income (loss) (“AOCI”), net of tax.

Earnings per Share

We have computed earnings per common share on the basis of the weighted average number of common shares, and, where dilutive, common share equivalents, outstanding during the indicated periods. See Note 8 for our earnings per share computations.

Accumulated Other Comprehensive Loss

The components of AOCI included in stockholders’ equity are as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,886	)	$	(3,366	)
Net loss on investments		(1,875	)		(2,316	)
Net gain (loss) on derivative financial instruments		(58,316	)		11,735
Unrecognized losses on benefit obligations		(93,596	)		(100,466	)
Accumulated other comprehensive loss	$	(156,673	)	$	(94,413	)

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The following tables present the components of AOCI and the amounts that were reclassified during the period:

For the three months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, March 31, 2013	$	(1,915	)	$	(5,819	)	$	3,848		$	(96,811	)	$	(100,697	)
Other comprehensive income (loss)		40			(55,563	)		(6,734	)		—			(62,257	)
Amounts reclassified from AOCI		—			3,066	(3)		—			3,215	(4)		6,281
Net current period other comprehensive income (loss)		40			(52,497	)		(6,734	)		3,215			(55,976	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the three months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)
Other comprehensive income		431			(18,164	)		3,326			—			(14,407	)
Amounts reclassified from AOCI		—			1,107	(3)		—			2,681	(4)		3,788
Net current period other comprehensive income		431			(17,057	)		3,326			2,681			(10,619	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

For the six months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,316	)	$	11,735		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss)		441			(71,013	)		480			—			(70,092	)
Amounts reclassified from AOCI		—			962	(3)		—			6,870	(4)		7,832
Net current period other comprehensive income (loss)		441			(70,051	)		480			6,870			(62,260	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

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For the six months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income		1,127			(24,051	)		6,439			—			(16,485	)
Amounts reclassified from AOCI		—			2,249	(3)		—			5,726	(4)		7,975
Net current period other comprehensive income		1,127			(21,802	)		6,439			5,726			(8,510	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

(1) Refer to Note 5 for additional details

(2) Refer to Note 4 for additional details

(3) Reclassified to cost of operations

(4) Reclassified to selling, general and administrative expenses

Impairment Review

We review goodwill for impairment on an annual basis or more frequently if circumstances indicate that impairment may exist. The annual impairment review involves comparing the fair value to the net book value of each applicable reporting unit and, therefore, is significantly impacted by estimates and judgments.

We review our long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If an evaluation is required, the fair value of each applicable asset is compared to its carrying value. Factors that impact our determination of potential impairment include forecasted utilization of equipment and estimates of forecasted cash flows from projects expected to be performed in future periods. Our estimates of cash flow may differ from actual cash flow due to, among other things, technological changes, economic conditions or changes in operating performance. Any changes in such factors may negatively affect our business segments and result in future asset impairments.

Income Taxes

We provide for income taxes based on the tax laws and rates in the countries in which we conduct our operations. MII is a Panamanian corporation that earns all of its income outside of Panama. As a result, we are not subject to income tax in Panama. We operate in various taxing jurisdictions around the world. Each of these jurisdictions has a regime of taxation that varies, not only with respect to nominal rates, but also with respect to the basis on which these rates are applied. These variations, along with changes in our mix of income or loss from these jurisdictions, may contribute to shifts, sometimes significant, in our effective tax rate.

Three months ended June 30, 2013

For the three months ended June 30, 2013, we recognized a loss before provision for income taxes of $140.2 million, compared to income of $82.3 million in the three months ended June 30, 2012. In the aggregate, the provision for income taxes was $5.9 million and $28.3 million for the three months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

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Six months ended June 30, 2013

For the six months ended June 30, 2013, we recognized a loss before provision for income taxes of $88.6 million, compared to income of $172.9 million in the six months ended June 30, 2012. In the aggregate, the provision for income taxes was $33.2 million and $57.1 million for the six months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

At June 30, 2013, we had foreign net operating loss carryforwards available to offset future taxable income in foreign jurisdictions, with a valuation allowance of $69 million against $78 million of the related deferred taxes. The remaining $9 million of foreign deferred taxes is expected to be realized through future foreign taxable income. At June 30, 2013, we had U.S. federal net operating loss carryforwards but have fully reserved the $133 million deferred tax asset.

Recently Issued Accounting Standards

On July 18, 2013, the Financial Accounting Standards Board (“FASB”) issued an update to the topic Income Taxes. The update clarifies that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward if such settlement is required or expected in the event the uncertain tax position is disallowed. In situations where these items are not available at the reporting date under the tax law of the applicable jurisdiction or the tax law of the jurisdiction does not require, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The update is effective for reporting periods after December 15, 2013 and the adoption of this update is not expected to have a material impact on our condensed consolidated financial statements.

In February 2013, the FASB issued an update to the topic Comprehensive Income. The update requires companies to provide additional information about the nature and amount of certain reclassifications out of AOCI, which impact the income statement. While the amendment does not change current reporting requirements, companies are required to provide information about the amounts reclassified out of AOCI by the respective line item. The update is effective for reporting periods after December 15, 2012 and the adoption of this update did not have a material impact on our condensed consolidated financial statements.

In January 2013, the FASB issued an update to the topic Balance Sheet. This update requires new disclosures presenting detailed information regarding both the gross and net basis of derivatives and other financial instruments that are eligible for offset in the balance sheet or that are subject to a master netting arrangement. The update is effective for the first quarter of 2013 and is to be applied retrospectively. As this new guidance relates to presentation only, the adoption of this update did not have a material impact on our condensed consolidated financial statements.

NOTE 2—ACQUISITION, DISPOSITIONS AND ATLANTIC RESTRUCTURING CHARGES

Acquisition

During the quarter ended March 31, 2013, we entered into a share purchase agreement to acquire all of the issued and outstanding shares of capital stock of Deepsea Group Limited, a United Kingdom-based company that provides subsea and other engineering services to international energy companies, primarily through offices in the United Kingdom and the United States. Total consideration was approximately $9.0 million, which includes cash ($6.0 million) and the delivery of 313,580 restricted shares of MII common stock (out of treasury). The transaction is being accounted for using the acquisition method and, accordingly, assets acquired and liabilities assumed are recorded at their respective fair values. The preliminary purchase price allocation has not been

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completed and is subject to change for a period of one-year following the acquisition. Results of operations and pro forma results have not been presented, as the effects of this transaction were not material to our condensed consolidated financial statements.

Dispositions

Assets Held for Sale

We previously committed to a plan to sell four of our multi-function marine vessels, specifically the Bold Endurance, DB 16, DB 26 and the DLB KPI. Assets classified as held for sale are no longer depreciated. During the quarter ended March 31, 2013, we completed the sale of the Bold Endurance and the DB 26 for aggregate cash proceeds of approximately $32.0 million, resulting in an aggregate gain of approximately $12.5 million. We remain in active discussions with interested parties to sell the DLB KP1 and DB 16.

Charter Fleet Business

On March 19, 2012, we completed the sale of our former charter fleet business, which operated 10 of the 14 vessels acquired in 2007 in the Secunda Acquisition. The cash proceeds from the charter fleet sale were approximately $61.0 million, resulting in a gain on the sale of approximately $0.3 million. For the year ended December 31, 2011, we recognized an approximate $22.0 million write-down of our former charter fleet business.

The following table presents selected financial information regarding the results of operations attributable to our former charter fleet business:

	Six Months Ended June 30, 2012
	(Unaudited) (In thousands)
Revenues	$	8,184
Gain on disposal of discontinued operations		257
Income before provision for income taxes		3,240
Income from discontinued operations, net of tax	$	3,497

Atlantic Restructuring

We have previously implemented various cost reduction measures to better align our Atlantic operations with anticipated business levels. However, due to the continued decline and recurring operating losses experienced in our Atlantic segment, we commenced a restructuring of this segment’s operations during the quarter ended June 30, 2013, which involves our Morgan City, Louisiana, Houston, Texas, New Orleans, Louisiana and Brazil locations. The restructuring involves, among other things, reductions of administrative, fabrication and engineering personnel, and a plan to discontinue utilization of the Morgan City facility (after the completion of existing backlog projects, which are currently forecasted to be completed in the second quarter of 2014). Future fabrication and marine operations in the Atlantic segment are expected to be executed using the Altamira, Mexico facility for the foreseeable future. In addition, we have decided to exit a joint venture. Costs associated with the restructuring primarily include severance and other personnel-related costs, asset impairment and relocation costs and future unutilized lease costs. These costs are expected to range between $45 million to $60 million in the aggregate, and the majority of these costs are expected to be recognized over four quarters beginning with the quarter ended June 30, 2013. Of the total anticipated costs, we incurred approximately $15.5 million during the quarter ended June 30, 2013.

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NOTE 3—LONG-TERM DEBT AND NOTES PAYABLE

Credit Facility

In May 2010, we entered into a credit agreement with a syndicate of lenders and letter of credit issuers (as amended in August 2011, March 2013 and August 2013, the “Credit Agreement”). The Credit Agreement provides for revolving credit borrowings and issuances of letters of credit in an aggregate outstanding amount of up to $950.0 million and is scheduled to mature on August 19, 2016. Proceeds from borrowings under the Credit Agreement are available for working capital needs and other general corporate purposes. The Credit Agreement includes procedures for additional financial institutions to become lenders, or for any existing lender to increase its commitment thereunder.

In August 2013, we amended the Credit Agreement to, among other things: (1) add certain amounts to EBITDA (as defined in the Credit Agreement) for the fiscal quarters ended December 31, 2012, March 31, 2013 and June 30, 2013; (2) permit us to add to EBITDA certain cash expenses related to the Atlantic segment restructuring for the quarters ending September 30, 2013, December 31, 2013 and March 31, 2014; and (3) increase the maximum permitted leverage ratio of total indebtedness to EBITDA from 3.00:1.00 to 3.75:1.00 for the quarters ending September 30, 2013, December 31, 2013 and March 31, 2014. The August amendment to the Credit Agreement also provides that if we issue senior unsecured notes with a principal amount of at least $300 million, from the date of such issuance until March 31, 2014, the maximum permitted leverage ratio will increase from 3.75:1.00 to 5.00:1.00 and we will have to comply with a maximum permitted secured leverage ratio of total secured indebtedness to EBITDA of 2.00:1.00. The maximum leverage ratio and the minimum interest coverage ratio as defined in the Credit Agreement may differ in the method of calculation from similarly titled measures used by other companies or in other agreements. The Credit Agreement also contains covenants that restrict, among other things, debt incurrence, liens, investments, acquisitions, asset dispositions, dividends, prepayments of subordinated debt, mergers and capital expenditures.

Other than customary mandatory prepayments in connection with casualty events, the Credit Agreement requires only interest payments on a quarterly basis until maturity. We may prepay all loans under the Credit Agreement at any time without premium or penalty (other than customary LIBOR breakage costs), subject to certain notice requirements.

Our overall borrowing capacity is in large part dependent on maintaining compliance with covenants under the Credit Agreement by generating sufficient income from operations. At June 30, 2013, we were in compliance with our covenant requirements. A comparison of the key financial covenants and compliance (prior to the amendment to the Credit Agreement effected in August 2013) is as follows:

	Required		Actual
Maximum leverage ratio		3.00		0.92
Minimum interest coverage ratio		4.00		17.19

Loans outstanding under the Credit Agreement bear interest at the borrower’s option at either the Eurodollar rate plus a margin ranging from 1.50% to 2.50% per year or the base rate (the highest of the Federal Funds rate plus 0.50%, the 30-day Eurodollar rate plus 1.0%, or the administrative agent’s prime rate) plus a margin ranging from 0.50% to 1.50% per year. The applicable margin for revolving loans varies depending on the credit ratings of the Credit Agreement. We are charged a commitment fee on the unused portions of the Credit Agreement, and that fee varies between 0.200% and 0.450% per year depending on the credit ratings of the Credit Agreement. Additionally, we are charged a letter of credit fee of between 1.50% and 2.50% per year with respect to the amount of each financial letter of credit issued under the Credit Agreement and a letter of credit fee of between 0.75% and 1.25% per year with respect to the amount of each performance letter of credit issued under the Credit Agreement, in each case depending on the credit ratings of the Credit Agreement. Under the Credit Agreement, we also pay customary issuance fees and other fees and expenses in connection with the issuance of letters of credit under the Credit Agreement. In connection with entering into the Credit Agreement and certain

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amendments to the Credit Agreement, we paid certain fees to the lenders thereunder, and certain arrangement and other fees to the arrangers and agents for the Credit Agreement, which are being amortized to interest expense over the term of the Credit Agreement.

At June 30, 2013, there were no borrowings outstanding, and letters of credit issued under the Credit Agreement totaled $265.8 million. At June 30, 2013, there was $684.2 million available for borrowings or to meet letter of credit requirements under the Credit Agreement. There were no borrowings under the Credit Agreement during the quarter ended June 30, 2013. Had there been any such borrowings at June 30, 2013, the applicable base interest rate would have been approximately 4.0% per annum. In addition, we had $116.4 million in outstanding unsecured bilateral letters of credit at June 30, 2013.

At June 30, 2013, based on the credit ratings applicable to the Credit Agreement, the applicable margin for Eurodollar-rate loans was 1.75%, the applicable margin for base-rate loans was 0.75%, the letter of credit fee for financial letters of credit was 1.75%, the letter of credit fee for performance letters of credit was 0.875%, and the commitment fee for unused portions of the Credit Agreement was 0.25%. The Credit Agreement does not have a floor for the base rate or the Eurodollar rate.

North Ocean Financing

North Ocean 102

In December 2009, J. Ray McDermott, S.A. (“JRMSA”), a wholly owned subsidiary of MII, entered into a vessel-owning joint venture transaction with Oceanteam ASA. As a result of this transaction, we had consolidated notes payable of $34.4 million and $37.3 million on our condensed consolidated balance sheets at June 30, 2013 and December 31, 2012, respectively, of which $34.4 million and $6.0 million was classified as current notes payable at June 30, 2013 and December 31, 2012, respectively. JRMSA has guaranteed approximately 50% of this debt based on its ownership percentages in the vessel-owning companies. The outstanding debt bears interest at a rate equal to the three-month LIBOR (which resets every three months) plus a margin of 3.315% and matures in January 2014.

North Ocean 105

On September 30, 2010, MII, as guarantor, and North Ocean 105 AS, in which we have a 75% ownership interest, as borrower, entered into a financing agreement to finance a portion of the construction costs of the North Ocean 105. The agreement provides for borrowings of up to $69.4 million, bearing interest at 2.76% per year, and requires principal repayment in 17 consecutive semi-annual installments, which commenced on October 1, 2012. Borrowings under the agreement are secured by, among other things, a pledge of all of the equity of North Ocean 105 AS, a mortgage on the North Ocean 105, and a lien on substantially all of the other assets of North Ocean 105 AS. MII unconditionally guaranteed all amounts to be borrowed under the agreement. There was $61.3 million and $65.4 million in borrowings outstanding under this agreement on our balance sheets at June 30, 2013 and December 31, 2012, respectively, of which $8.2 million was classified as current notes payable at June 30, 2013 and December 31, 2012.

ANZ Reimbursement Agreement

On April 20, 2012, McDermott and one of its wholly owned subsidiaries, McDermott Australia Pty. Ltd. (“McDermott Australia”), entered into a secured Letter of Credit Reimbursement Agreement (the “Reimbursement Agreement”) with Australia and New Zealand Banking Group Limited (“ANZ”). In accordance with the terms of the Reimbursement Agreement, ANZ issued letters of credit in the aggregate amount of approximately $109.0 million to support McDermott Australia’s performance obligations under contractual arrangements relating to a field development project. The obligations of McDermott and McDermott Australia under the Reimbursement Agreement are secured by McDermott Australia’s interest in the contractual arrangements and certain related assets.

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Surety Bonds

In 2012 and 2007, JRMSA executed general agreements of indemnity in favor of surety underwriters based in Mexico relating to surety bonds issued in support of contracting activities of J. Ray McDermott de Mèxico, S.A. de C.V., a subsidiary of JRMSA. As of June 30, 2013, the aggregate principal amount of bonds issued under these arrangements totaled $46.2 million.

Long-term debt and notes payable obligations

A summary of our long-term debt obligations are as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Long-term debt consists of:
North Ocean 102 Construction Financing	$	34,361	$	37,349
North Ocean 105 Construction Financing		61,274		65,359
		95,635		102,708
Less: Amounts due within one year		42,531		14,146
Total long-term debt	$	53,104	$	88,562

NOTE 4—PENSION PLANS

Although we currently provide retirement benefits for most of our U.S. employees through sponsorship of the McDermott Thrift Plan, some of our longer-term U.S. employees and former employees are entitled to retirement benefits under the McDermott (U.S.) Retirement Plan, a non-contributory qualified defined benefit pension plan (the “McDermott Plan”), and several non-qualified supplemental defined benefit pension plans. The McDermott Plan and the non-qualified supplemental defined benefit pension plans are collectively referred to herein as the “Domestic Plans.” The McDermott Plan has been closed to new participants since 2006, and benefit accruals under the McDermott Plan were frozen completely in 2010.

We also sponsor a defined benefit pension plan established under the laws of the Commonwealth of the Bahamas, the J. Ray McDermott, S.A. Third Country National Employees Pension Plan (the “TCN Plan”), which provides retirement benefits for certain of our current and former foreign employees. Effective August 1, 2011, new entry into the TCN Plan was closed, and effective December 31, 2011, benefit accruals under the TCN Plan were frozen. Effective January 1, 2012, we established a new global defined contribution plan to provide retirement benefits to non-U.S. expatriate employees who may have otherwise obtained benefits under the TCN Plan.

Net periodic benefit cost for the Domestic Plans and the TCN Plan includes the following components:

	Domestic Plans
	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Interest cost	$	11,831		$	6,569		$	11,998		$	13,262
Expected return on plan assets		(16,153	)		(8,905	)		(19,153	)		(17,905	)
Recognized net actuarial loss and other		2,714			2,228			5,866			4,818
Net periodic benefit cost	$	(1,608	)	$	(108	)	$	(1,289	)	$	175

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	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Interest cost	$	467		$	461		$	934		$	922
Expected return on plan assets		(650	)		(611	)		(1,301	)		(1,222	)
Recognized net actuarial loss		508			447			1,015			893
Net periodic benefit cost	$	325		$	297		$	648		$	593

NOTE 5—DERIVATIVE FINANCIAL INSTRUMENTS

We enter into derivative financial instruments primarily to hedge certain firm purchase commitments and forecasted transactions denominated in foreign currencies. We record these contracts at fair value on our consolidated balance sheets. Depending on the hedge designation at the inception of the contract, the related gains and losses on these contracts are either: (1) deferred as a component of AOCI until the hedged item is recognized in earnings; (2) offset against the change in fair value of the hedged firm commitment through earnings; or (3) recognized immediately in earnings. At the inception and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows or fair value attributable to the hedged risk. We exclude from our assessment of effectiveness the portion of the fair value of the forward contracts attributable to the difference between spot exchange rates and forward exchange rates. The ineffective portion of a derivative’s change in fair value and any portion excluded from the assessment of effectiveness are immediately recognized in earnings. Gains and losses on derivative financial instruments that are immediately recognized in earnings are included as a component of gain (loss) on foreign currency—net in our condensed consolidated statements of income.

At June 30, 2013, the majority of our foreign currency forward contracts were designated as cash flow hedging instruments. In addition, we deferred approximately $58.3 million of net losses on these derivative financial instruments in AOCI, and we expect to reclassify approximately $15.1 million of deferred losses out of AOCI by June 30, 2014, as hedged items are recognized in earnings.

The notional value of our outstanding derivative contracts totaled $1.5 billion at June 30, 2013, with maturities extending through 2017. Of this amount, approximately $815.9 million is associated with various foreign currency expenditures we expect to incur on one of our Asia Pacific segment EPCI projects. These instruments consist of contracts to purchase or sell foreign-denominated currencies. At June 30, 2013, the fair value of these contracts was in a net liability position totaling $42.9 million.

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The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable—other	$	5,427	$	12,311
Other assets		1,498		13,770
Total asset derivatives	$	6,925	$	26,081
Accounts payable	$	15,539	$	3,604
Other liabilities		34,278		1,043
Total liability derivatives	$	49,817	$	4,647

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Amount of loss recognized in other comprehensive income (loss)	$	(55,563	)	$	(18,164	)	$	(71,013	)	$	(24,204	)
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	(2,845	)	$	676		$	(831	)	$	1,970
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain on foreign currency—net	$	7,291		$	9,115		$	4,442		$	11,465

NOTE 6—FAIR VALUE MEASUREMENTS

The following is a summary of our available-for-sale securities measured at fair value:

	Total at June 30, 2013		Level 1		Level 2		Level 3
	(Unaudited)
	(In thousands)
Mutual funds(1)	$	2,058	$	—	$	2,058	$	—
Commercial paper		9,893		—		9,893		—
Asset-backed securities and collateralized mortgage obligations(2)		8,092		—		2,190		5,902
Corporate notes and bonds(3)		1,001		—		1,001		—
Total	$	21,044	$	—	$	15,142	$	5,902

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	Total at December 31, 2012		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	2,023	$	—	$	2,023	$	—
Commercial paper		29,737		—		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		—		2,134		6,343
Corporate notes and bonds		5,755		—		5,755		—
Total	$	45,992	$	—	$	39,649	$	6,343

(1) Various U.S. equities and other investments managed under mutual funds

(2) Asset-backed and mortgage-backed securities with maturities of up to 26 years

(3) Corporate notes and bonds with maturities of three years or less

Our Level 2 investments consist primarily of commercial paper, corporate notes and bonds, asset-backed commercial paper notes backed by a pool of mortgage-backed securities and mutual funds. The fair value of our Level 2 investments was determined using a market approach which is based on quoted prices and other information for similar or identical instruments.

Our Level 3 investment consists of asset-backed commercial paper notes backed by a pool of mortgage-backed securities. The fair value of this Level 3 investment was based on the calculation of an overall weighted-average valuation, using the prices of the underlying individual securities. Individual securities in the pool were valued based on market observed prices, where available. If market prices were not available, prices of similar securities backed by similar assets were used.

Changes in Level 3 Instrument

The following is a summary of the changes in our Level 3 instrument measured on a recurring basis for the three months and six months ended June 30, 2013 and June 30, 2012:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,157		$	6,177		$	6,343		$	6,030
Total realized and unrealized gains		18			456			228			898
Principal repayments		(273	)		(295	)		(669	)		(590	)
Balance at end of period	$	5,902		$	6,338		$	5,902		$	6,338

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Unrealized Losses on Investments

Our net unrealized loss on investments was $1.9 million and $2.4 million at June 30, 2013 and December 31, 2012, respectively. The investments in an unrealized loss position for twelve months or longer are asset-backed and mortgage-backed obligations. These investments have generally shown a positive trend and continue to perform, and we currently do not have the intent to sell these securities before their anticipated recovery. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired as of June 30, 2013. The amount of investments in an unrealized loss position for less than twelve months was not significant for either of the periods presented. The following is a summary of our available-for-sale securities:

	Twelve Months or Greater
	Fair Value		Unrealized Losses
	(Unaudited) (In thousands)
June 30, 2013
Mutual funds	$	2,058	$	—
Commercial paper		9,893		—
Asset-backed securities and collateralized mortgage obligations		8,092		(1,659	)
Corporate notes and bonds		1,001		—
Total	$	21,044	$	(1,659	)

	Twelve Months or Greater
	Fair Value		Unrealized Losses
	(Unaudited) (In thousands)
December 31, 2012
Mutual funds	$	2,023	$	—
Commercial paper		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		(2,376	)
Corporate notes and bonds		5,755		—
Total	$	45,992	$	(2,376	)

Other Financial Instruments

We used the following methods and assumptions in estimating our fair value disclosures for our other financial instruments:

Cash and restricted cash and cash equivalents. The carrying amounts that we have reported in the accompanying condensed consolidated balance sheets for cash, cash equivalents and restricted cash and cash equivalents approximate their fair values and are classified as Level 1 within the fair value hierarchy.

Short-term and long-term debt. The fair value of debt instruments is classified as Level 2 within the fair value hierarchy and is valued using a market approach based on quoted prices for similar instruments traded in active markets. Where quoted prices are not available, the income approach is used to value these instruments based on the present value of future cash flows discounted at estimated borrowing rates for similar debt instruments or on estimated prices based on current yields for debt issues of similar quality and terms.

Forward contracts. The fair value of forward contracts is classified as Level 2 within the fair value hierarchy and is valued using observable market parameters for similar instruments traded in active markets.

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Where quoted prices are not available, the income approach is used to value these forward contracts, which discounts future cash flows based on current market expectations and credit risk.

The estimated fair values of certain of our financial instruments are as follows:

	June 30, 2013						December 31, 2012
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	427,711		$	427,711		$	640,147		$	640,147
Restricted cash and cash equivalents	$	24,486		$	24,486		$	18,116		$	18,116
Investments	$	21,044		$	21,044		$	45,992		$	45,992
Debt	$	(95,635	)	$	(98,640	)	$	(102,708	)	$	(106,324	)
Forward contracts	$	(42,892	)	$	(42,892	)	$	21,434		$	21,434

NOTE 7—STOCK-BASED COMPENSATION

Equity instruments are measured at fair value on the grant date. Stock-based compensation expense is generally recognized on a straight-line basis over the requisite service periods of the awards. Compensation expense is based on awards we expect to ultimately vest. Therefore, we have reduced compensation expense for estimated forfeitures based on our historical forfeiture rates. Our estimate of forfeitures is determined at the grant date and is revised if our actual forfeiture rate is materially different from our estimate.

We use a Black-Scholes model to determine the fair value of certain share-based awards, such as stock options. Additionally, we use a Monte Carlo model to determine the fair value of certain share-based awards that contain market and performance-based conditions. The use of these models requires highly subjective assumptions, such as assumptions about the expected life of the award, vesting probability, expected dividend yield and the volatility of our stock price. Total stock-based compensation expense, net recognized for the three months and six months ended June 30, 2013 and June 30, 2012 is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(Unaudited) (In thousands)
Stock Options	$	1,170	$	1,023	$	2,200	$	2,017
Restricted Stock and Restricted Stock Units		3,250		2,258		4,987		3,718
Performance Shares and Deferred Stock Units		1,767		1,235		2,923		2,075
Total	$	6,187	$	4,516	$	10,110	$	7,810

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NOTE 8—EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per common share:

	Three Months Ended June 30,					Six Months Ended June 30,
	2013			2012		2013			2012
	(Unaudited) (In thousands)
Income (loss) from continuing operations less noncontrolling interests	$	(149,423	)	$	52,739	$	(128,870	)	$	112,000
Income from discontinued operations, net of tax		—			—		—			3,497
Net income (loss) attributable to McDermott International, Inc.	$	(149,423	)	$	52,739	$	(128,870	)	$	115,497
Weighted average common shares (basic)		236,199,438			235,681,213		236,070,311			235,444,733
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		—			1,779,552		—			1,951,964
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		236,199,438			237,460,765		236,070,311			237,396,697
Basic earnings (loss) per share
Income (loss) from continuing operations less noncontrolling interests		(0.63	)		0.22		(0.55	)		0.48
Income from discontinued operations, net of tax		—			—		—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22		(0.55	)		0.49
Diluted earnings (loss) per share:
Income (loss) from continuing operations less noncontrolling interests		(0.63	)		0.22		(0.55	)		0.47
Income from discontinued operations, net of tax		—			—		—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22		(0.55	)		0.49

(1) Approximately 2.9 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three months and six months ended June 30, 2013. Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three months and six months ended June 30, 2012, respectively.

NOTE 9—SEGMENT REPORTING

We report our financial results under a geographic-based reporting structure, which coincides with how our financial information is reviewed and evaluated on a regular basis by our chief operating decision maker. We operate in four primary operating segments, which consist of Asia Pacific, Atlantic, Caspian and the Middle East. The Caspian and Middle East operating segments are aggregated into the Middle East reporting segment due to the proximity of regions and similarities in the nature of services provided, economic characteristics and oversight responsibilities. Accordingly, we have three reporting segments consisting of Asia Pacific, Atlantic and the Middle East. We also report certain corporate and other non-operating activities under the heading “Corporate and Other.”

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Reporting segments are measured based on operating income, which is defined as revenues reduced by total costs and expenses and equity in income (loss) of unconsolidated affiliates. Summarized financial information is shown in the following tables:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	229,829		$	338,464		$	555,891		$	635,499
Atlantic		186,554			110,304			334,738			209,908
Middle East		230,867			440,480			564,109			771,519
Total revenues	$	647,250		$	889,248		$	1,454,738		$	1,616,926
Operating income (loss):
Asia Pacific	$	(32,395	)	$	46,605		$	55,557		$	104,039
Atlantic		(48,651	)		(14,042	)		(65,061	)		(26,035	)
Middle East		(68,490	)		46,819			(86,999	)		81,554
Total operating income (loss)	$	(149,536	)	$	79,382		$	(96,503	)	$	159,558
Capital expenditures(2):
Asia Pacific	$	41,430		$	21,666		$	45,185		$	38,231
Atlantic		34,303			52,615			56,313			64,490
Middle East		27,391			10,935			37,943			26,711
Corporate and Other		3,702			1,694			5,034			2,229
Total capital expenditures	$	106,826		$	86,910		$	144,475		$	131,661
Depreciation and amortization:
Asia Pacific	$	4,507		$	5,235		$	9,537		$	10,092
Atlantic		5,181			6,111			11,986			13,295
Middle East		7,516			7,554			14,026			15,048
Corporate and Other		1,892			3,698			3,769			7,439
Total depreciation and amortization	$	19,096		$	22,598		$	39,318		$	45,874
Drydock amortization:
Asia Pacific	$	2,088		$	2,997		$	5,049		$	5,989
Atlantic		1,908			2,877			3,816			6,313
Middle East		385			621			1,066			1,305
Total drydock amortization	$	4,381		$	6,495		$	9,931		$	13,607

⁽¹⁾  Intersegment transactions included in revenues were not significant for any of the periods presented.

⁽²⁾  Total capital expenditures presents expenditures for which cash payments were made during the period. These amounts exclude approximately $10.8 million and $1.3 million in accrued capital expenditures for the six months ended June 30, 2013 and 2012, respectively.

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,176,446	$	1,402,923
Atlantic		561,633		536,734
Middle East		1,262,792		1,006,284
Corporate and other		195,076		387,686
Total assets	$	3,195,947	$	3,333,627

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NOTE 10—COMMITMENTS AND CONTINGENCIES

Litigation

The following discussion presents information relating to pending litigation discussed in Note 12—Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2012. There have been no material subsequent developments relating to these matters.

On or about August 23, 2004, a declaratory judgment action entitled Certain Underwriters at Lloyd’s London, et al. v. J. Ray McDermott, Inc. et al., was filed by certain underwriters at Lloyd’s, London and Threadneedle Insurance Company Limited (the “London Insurers”), in the 23rd Judicial District Court, Assumption Parish, Louisiana, against MII, J. Ray McDermott, Inc. (“JRMI”) and two insurer defendants, Travelers and INA, seeking a declaration that the London Insurers have no obligation to indemnify MII and JRMI for certain bodily injury claims, including claims for asbestos and welding rod fume personal injury which have been filed by claimants in various state courts. Additionally, Travelers filed a cross-claim requesting a declaration of non-coverage in approximately 20 underlying matters. This proceeding was stayed by the Court on January 3, 2005. We do not believe an adverse judgment or material losses in this matter are probable, and, accordingly, we have not accrued any amounts relating to this contingency. Although there is a possibility of an adverse judgment, the amount or potential range of loss is not estimable at this time. The insurer-plaintiffs in this matter commenced this proceeding in a purported attempt to obtain a determination of insurance coverage obligations for occupational exposure and/or environmental matters for which we have given notice that we could potentially seek coverage. Because estimating losses would require, for every matter, known and unknown, on a case-by-case basis, anticipating what impact on coverage a judgment would have and a determination of an otherwise expected insured value, damages cannot be reasonably estimated.

On December 16, 2005, a proceeding entitled Antoine, et al. vs. J. Ray McDermott, Inc., et al. (“Antoine Suit”), was filed in the 24th Judicial District Court, Jefferson Parish, Louisiana, by approximately 88 plaintiffs against approximately 215 defendants, including our subsidiaries formerly known as JRMI and Delta Hudson Engineering Corporation (“DHEC”), generally alleging injuries for exposure to asbestos, and unspecified chemicals, metals and noise while the plaintiffs were allegedly employed as Jones Act seamen. This case was dismissed by the Court on January 10, 2007, without prejudice to plaintiffs’ rights to refile their claims. On January 29, 2007, 21 plaintiffs from the dismissed Antoine Suit filed a matter entitled Boudreaux, et al. v. McDermott, Inc., et al. (the “Boudreaux Suit”), in the United States District Court for the Southern District of Texas, against JRMI and our subsidiary formerly known as McDermott Incorporated, and approximately 30 other employer defendants, alleging Jones Act seaman status and generally alleging exposure to welding fumes, solvents, dyes, industrial paints and noise. The Boudreaux Suit was transferred to the United States District Court for the Eastern District of Louisiana on May 2, 2007, which entered an order in September 2007 staying the matter until further order of the Court due to the bankruptcy filing of one of the co-defendants. Additionally, on January 29, 2007, another 43 plaintiffs from the dismissed Antoine Suit filed a matter entitled Antoine, et al. v. McDermott, Inc., et al. (the “New Antoine Suit”), in the 164th Judicial District Court for Harris County, Texas, against JRMI, our subsidiary formerly known as McDermott Incorporated and approximately 65 other employer defendants and 42 maritime products defendants, alleging Jones Act seaman status and generally alleging personal injuries for exposure to asbestos and noise. On April 27, 2007, the District Court entered an order staying all activity and deadlines in the New Antoine Suit, other than service of process and answer/appearance dates, until further order of the Court. The New Antoine Suit plaintiffs filed a motion to lift the stay on February 20, 2009, which is pending before the Texas District Court. The plaintiffs seek monetary damages in an unspecified amount in both the Boudreaux Suit and New Antoine Suit cases and attorneys’ fees in the New Antoine Suit. We cannot reasonably estimate the extent of a potential judgment against us, if any, and we intend to vigorously defend these suits.

Additionally, due to the nature of our business, we and our affiliates are, from time to time, involved in litigation or subject to disputes or claims related to our business activities, including, among other things:

• performance- or warranty-related matters under our customer and supplier contracts and other business arrangements; and

30

• workers’ compensation claims, Jones Act claims, occupational hazard claims, including asbestos-exposure claims, premises liability claims and other claims.

Based upon our prior experience, we do not expect that any of these other litigation proceedings, disputes and claims will have a material adverse effect on our consolidated financial condition, results of operations or cash flows; however, because of the inherent uncertainty of litigation and, in some cases, the availability and amount of potentially applicable insurance, we can provide no assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material effect on our consolidated financial condition, results of operations or cash flows for the fiscal period in which that resolution occurs.

Environmental Matters

We have been identified as a potentially responsible party at various cleanup sites under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended (“CERCLA”). CERCLA and other environmental laws can impose liability for the entire cost of cleanup on any of the potentially responsible parties, regardless of fault or the lawfulness of the original conduct. Generally, however, where there are multiple responsible parties, a final allocation of costs is made based on the amount and type of wastes disposed of by each party and the number of financially viable parties, although this may not be the case with respect to any particular site. We have not been determined to be a major contributor of wastes to any of these sites. On the basis of our relative contribution of waste to each site, we expect our share of the ultimate liability for the various sites will not have a material adverse effect on our consolidated financial condition, results of operations or cash flows in any given year.

At June 30, 2013 we had total environmental reserves of $0.6 million, all of which was included in current liabilities. Inherent in the estimates of those reserves and recoveries are our expectations regarding the levels of contamination, remediation costs and recoverability from other parties, which may vary significantly as remediation activities progress. Accordingly, changes in estimates could result in material adjustments to our operating results, and the ultimate loss may differ materially from the amounts we have provided for in our consolidated financial statements.

Contracts Containing Liquidated Damages Provisions

Some of our contracts contain provisions that require us to pay liquidated damages if we are responsible for the failure to meet specified contractual milestone dates and the applicable customer asserts a claim under these provisions. These contracts define the conditions under which our customers may make claims against us for liquidated damages. In many cases in which we have historically had potential exposure for liquidated damages, such damages ultimately were not asserted by our customers. As of June 30, 2013, it is possible that we may incur liabilities for liquidated damages aggregating approximately $153.8 million, of which approximately $24.0 million has been recorded in our financial statements, based on our actual or projected failure to meet certain specified contractual milestone dates. The dates for which these potential liquidated damages could arise extend to November 2013. We believe we will be successful in obtaining schedule extensions or other customer-agreed changes that should resolve the potential for additional liquidated damages. Accordingly, we believe that no amounts for these potential liquidated damages in excess of the amounts currently reflected in our financial statements are probable of being paid by us. However, we may not achieve relief on some or all of the issues.

Contractual Obligations

At June 30, 2013, we had outstanding obligations related to our new vessel construction contracts on the LV 108 and DLV 2000 of $418.6 million in the aggregate, with $98.0 million, $124.5 million and $196.1 million due in the years ending December 31, 2013, 2014 and 2015, respectively.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

In this quarterly report on Form 10-Q, unless the context otherwise indicates, “we,” “us” and “our” mean McDermott International, Inc. and its consolidated subsidiaries.

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

We are including the following discussion to inform our existing and potential security holders generally of some of the risks and uncertainties that can affect our company and to take advantage of the “safe harbor” protection for forward-looking statements that applicable federal securities law affords. This information should be read in conjunction with the unaudited condensed consolidated financial statements and the notes thereto included under Item 1 and the audited consolidated financial statements and the related notes and Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our annual report on Form 10-K for the year ended December 31, 2012.

From time to time, our management or persons acting on our behalf make forward-looking statements to inform existing and potential security holders about our company. These statements may include projections and estimates concerning the scope, execution, timing and success of specific projects and our future backlog, revenues, income and capital spending. Forward-looking statements are generally accompanied by words such as “estimate,” “project,” “predict,” “forecast,” “believe,” “expect,” “anticipate,” “plan,” “seek,” “goal,” “could,” “may,” or “should” or other words that convey the uncertainty of future events or outcomes. Sometimes we will specifically describe a statement as being a forward-looking statement and refer to this cautionary statement.

These forward-looking statements include, but are not limited to, statements that relate to, or statements that are subject to risks, contingencies or uncertainties that relate to:

• future levels of revenues, operating margins, income from operations, net income or earnings per share;

• outcome of project awards and scope, execution and timing of specific projects, including timing to complete and cost to complete these projects;

• anticipated levels of demand for our products and services;

• market outlook for the EPCI market, including deepwater;

• future levels of capital, environmental or maintenance expenditures;

• the success or timing of completion of ongoing or anticipated capital or maintenance projects;

• the adequacy of our sources of liquidity and capital resources;

• the effectiveness of our derivative contracts in mitigating foreign currency risk;

• expectations regarding the acquisition or divestiture of assets;

• the ability to dispose of assets held for sale in a timely manner or for a price at or above net realizable value;

• the restructuring of Atlantic operations, including the expected range of costs and timing of cost recognition;

• the potential effects of judicial or other proceedings on our business, financial condition, results of operations and cash flows; and

• the anticipated effects of actions of third parties such as competitors, or federal, foreign, state or local regulatory authorities, or plaintiffs in litigation.

These forward-looking statements speak only as of the date of this report; we disclaim any obligation to update these statements unless required by securities law, and we caution you not to rely on them unduly. We

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have based these forward-looking statements on our current expectations and assumptions about future events. While our management considers these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory and other risks, contingencies and uncertainties, most of which are difficult to predict and many of which are beyond our control. These risks, contingencies and uncertainties relate to, among other matters, the following:

• general economic and business conditions and industry trends;

• general developments in the industries in which we are involved;

• decisions about offshore developments to be made by oil and gas companies;

• the highly competitive nature of our industry;

• our ability to appropriately bid, estimate and effectively perform projects on time, in accordance with the schedules established by the applicable contracts with customers;

• cancellations of and adjustments to backlog and the resulting impact from using backlog as an indicator of future revenues or earnings;

• the capital investment required to maintain and/or upgrade our fleet of vessels;

• the ability of our suppliers and subcontractors to deliver raw materials in sufficient quantities and/or perform in a timely manner;

• volatility and uncertainty of the credit markets;

• our ability to comply with covenants in our credit agreements and other debt instruments and availability, terms and deployment of capital;

• the unfunded liabilities of our pension plans may negatively impact our liquidity and, depending upon future operations, may impact our ability to fund our pension obligations;

• the continued availability of qualified personnel;

• the operating risks normally incident to our lines of business, including the potential impact of liquidated damages;

• natural or man-caused disruptive events that could damage our facilities, equipment or our work-in-progress and cause us to incur losses and/or liabilities;

• changes in, or our failure or inability to comply with, government regulations;

• adverse outcomes from legal and regulatory proceedings;

• impact of potential regional, national and/or global requirements to significantly limit or reduce greenhouse gas and other emissions in the future;

• changes in, and liabilities relating to, existing or future environmental regulatory matters;

• changes in tax laws;

• rapid technological changes;

• the consequences of significant changes in interest rates and currency exchange rates;

• difficulties we may encounter in obtaining regulatory or other necessary approvals of any strategic transactions;

• the risks associated with integrating acquired businesses;

• the risk we may not be successful in updating and replacing current key information technology systems;

• social, political and economic situations in foreign countries where we do business;

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• the risks associated with our international operations, including local content requirements;

• interference from adverse weather conditions;

• the possibilities of war, other armed conflicts or terrorist attacks;

• the effects of asserted and unasserted claims and the extent of available insurance coverages;

• our ability to obtain surety bonds, letters of credit and financing;

• our ability to maintain builder’s risk, liability, property and other insurance in amounts and on terms we consider adequate and at rates that we consider economical;

• the aggregated risks retained in our captive insurance subsidiary; and

• the impact of the loss of insurance rights as part of the Chapter 11 Bankruptcy settlement concluded in 2006 involving several of our former subsidiaries.

We believe the items we have outlined above are important factors that could cause estimates in our financial statements to differ materially from actual results and those expressed in a forward-looking statement made in this quarterly report or elsewhere by us or on our behalf. We have discussed many of these factors in more detail elsewhere in this report and in our annual report on Form 10-K for the year ended December 31, 2012. These factors are not necessarily all the factors that could affect us. Unpredictable or unanticipated factors we have not discussed in this report could also have material adverse effects on actual results of matters that are the subject of our forward-looking statements. We do not intend to update our description of important factors each time a potential important factor arises, except as required by applicable securities laws and regulations. We advise our security holders that they should (1) be aware that factors not referred to above could affect the accuracy of our forward-looking statements and (2) use caution and common sense when considering our forward-looking statements.

Recent Developments

Atlantic Restructuring

We previously implemented various cost reduction measures to better align our Atlantic operations with anticipated business levels. However, due to the continued decline and recurring operating losses experienced in our Atlantic segment, during the quarter ended June 30, 2013, the Company has commenced restructuring the Atlantic operations, which include the Morgan City, Louisiana, Houston, Texas, New Orleans, Louisiana and Brazil locations. The restructuring involves, among other things, reductions of administrative, fabrication and engineering personnel, and a plan to discontinue utilization of the Morgan City facility (after the completion of existing backlog projects, which are currently forecasted to be completed in the second quarter of 2014). Future fabrication and marine operations in the Atlantic segment are expected to be executed using the Altamira, Mexico facility for the foreseeable future. In addition, we have decided to exit a joint venture. Costs associated with the restructuring primarily include severance and other personnel-related costs, asset impairment and relocation costs and future unutilized lease costs. These costs are expected to range between $45 million to $60 million in the aggregate, and the majority of these costs are expected to be recognized over four quarters beginning with the quarter ended June 30, 2013. Of the total anticipated costs, we incurred approximately $15.5 million during the quarter ended June 30, 2013.

Acquisition

During the quarter ended March 31, 2013, we entered into a share purchase agreement to acquire all of the issued and outstanding shares of capital stock of Deepsea Group Limited, a United Kingdom-based company that provides subsea and other engineering services to international energy companies, primarily through offices in the United Kingdom and the United States. Total consideration was approximately $9.0 million, which includes cash ($6.0 million) and the delivery of 313,580 restricted shares of MII common stock (out of treasury). The

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transaction is being accounted for using the acquisition method and, accordingly, assets acquired and liabilities assumed are recorded at their respective fair values. The preliminary purchase price allocation has not been completed and is subject to change for a period of one year following the acquisition. Results of operations and pro forma results of operations have not been presented, as the effects of this transaction were not material to our condensed consolidated financial statements.

Assets Held for Sale

We previously committed to a plan to sell four of our multi-function marine vessels, specifically the Bold Endurance, DB 16, DB 26 and the DLB KP1. Assets classified as held for sale are no longer depreciated. During the quarter ended March 31, 2013, we completed the sale of the Bold Endurance and the DB 26 for aggregate cash proceeds of approximately $32.0 million, resulting in an aggregate gain of approximately $12.5 million. We remain in active discussions with interested parties to sell the DLB KP1 and DB 16.

Accounting for Contracts

We execute our contracts through a variety of methods, including fixed-price, cost reimbursable, cost-plus, day-rate and unit-rate basis or some combination of those methods, with fixed-price being the most prevalent. Contracts are usually awarded through a competitive bid process. Factors that customers may consider include price, facility or equipment availability, technical capabilities of equipment and personnel, efficiency, safety record and reputation.

Fixed-price contracts are for a fixed amount to cover costs and any profit element for a defined scope of work. Fixed-price contracts entail more risk to us because they require us to predetermine both the quantities of work to be performed and the costs associated with executing the work.

We have contracts that extend beyond one year. Most of our long-term contracts have provisions for progress payments. We attempt to cover anticipated increases in labor, material and service costs of our long-term contracts either through an estimate of such charges, which is reflected in the original price, or through risk-sharing mechanisms, such as escalation or price adjustments for items such as labor and commodity prices.

We generally recognize our contract revenues and related costs on a percentage-of-completion basis. Accordingly, for each contract, we regularly review contract price and cost estimates as work progresses and reflect adjustments in profit proportionate to the percentage-of-completion of the related project in the period when we revise those estimates. To the extent that these adjustments result in a reduction or elimination of previously reported profits with respect to a project, we would recognize a charge against current earnings, which could be material.

Our arrangements with customers frequently require us to provide letters of credit, bid and performance bonds or guarantees to secure bids or performance under contracts. While these letters of credit, bonds and guarantees may involve significant dollar amounts, historically, there have been no material payments to our customers under these arrangements.

Some of our contracts contain provisions that require us to pay liquidated damages if we are responsible for the failure to meet specified contractual milestone dates and the applicable customer asserts a claim under these provisions. These contracts define the conditions under which our customers may make claims against us for liquidated damages. In many cases in which we have historically had potential exposure for liquidated damages, such damages ultimately were not asserted by our customers. As of June 30, 2013, it is possible that we may incur liabilities for liquidated damages aggregating to approximately $153.8 million, of which approximately $24.0 million has been recorded in our financial statements, based on our actual or projected failure to meet certain specified contractual milestone dates. The dates for which these potential liquidated damages could arise extend to November 2013. We believe we will be successful in obtaining schedule extensions or other customer-

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agreed changes that should resolve the potential for additional liquidated damages. Accordingly, we believe that no amounts for these potential liquidated damages in excess of the amounts currently reflected in our financial statements are probable of being paid by us. However, we may not achieve relief on some or all of the issues involved and, as a result, could be subject to higher damage amounts.

Change orders, which are a normal and recurring part of our business, can increase (sometimes substantially) the future scope and cost of a job. Therefore, change order awards (although frequently beneficial in the long term) can have the short-term effect of reducing the job percentage of completion and thus the revenues and profits recognized to date. We regularly review contract price and cost estimates as the work progresses and reflect adjustments in profit, proportionate to the job percentage of completion in the period when those estimates are revised. Revenue from unapproved change orders is recognized to the extent of amounts management expects to recover or costs incurred. Unapproved change orders that are disputed by the customer are treated as claims.

In the event of a contract deferral or cancellation, we generally would be entitled to recover costs incurred, settlement expenses and profit on work completed prior to deferral or termination. Significant or numerous cancellations could adversely affect our business, financial condition, results of operations and cash flows.

Critical Accounting Policies and Estimates

For a discussion of critical accounting policies and estimates we use in the preparation of our consolidated financial statements, refer to Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our annual report on Form 10-K for the year ended December 31, 2012. See Note 1 to our unaudited condensed consolidated financial statements included in this report for information on recently issued accounting standards.

Business Segments and Results of Operations

Business Segments

Our business segments consist of Asia Pacific, Atlantic, Caspian and the Middle East. The Caspian and Middle East operating segments are aggregated into the Middle East reporting segment due to the proximity of regions and similarities in the nature of services provided, economic characteristics and oversight responsibilities. We also report certain corporate and other non-operating activities under the heading “Corporate and Other.” Corporate and Other primarily reflects corporate personnel and activities, incentive compensation programs and other costs, which are generally fully allocated to our operating segments. Accordingly, we report our financial results under reporting segments consisting of Asia Pacific, Atlantic and the Middle East. The following is a discussion of our segments. For financial information about our segments, see Note 9 to our unaudited condensed consolidated financial statements included in this report.

Asia Pacific Segment

Through our Asia Pacific segment, we serve the needs of customers primarily in Australia, Indonesia, Vietnam, Malaysia and Thailand. Project focus in this segment includes the fabrication and installation of fixed and floating structures and the installation of pipelines and subsea systems. The majority of our projects in this segment are performed on an engineering, procurement, construction and installation (“EPCI”) basis. Engineering and procurement services are provided by our Singapore office and are supported by additional resources located in Chennai, India and Houston, Texas. The primary fabrication facility for this segment is located on Batam Island, Indonesia. Additionally, through our equity ownership interest in a joint venture, we have developed a fabrication facility located in China.

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Atlantic Segment

Through our Atlantic segment, we serve the needs of customers, primarily in the United States, Brazil, Mexico, Trinidad and Africa. Project focus in this segment includes the fabrication and installation of fixed and floating structures and the installation of pipelines and subsea systems. Engineering and procurement services are provided by our Houston office. The primary fabrication facilities for this segment are located in Altamira, Mexico and Morgan City, Louisiana.

Middle East Segment

Through our Middle East segment, which includes the Caspian region, we serve the needs of customers in Saudi Arabia, Qatar, the United Arab Emirates (U.A.E.), Kuwait, India, Azerbaijan, Russia and the North Sea. Project focus in this segment relates primarily to the fabrication and offshore installation of fixed and floating structures and the installation of pipelines and subsea systems. The majority of our projects in this segment are performed on an EPCI basis. Engineering and procurement services are provided by our Dubai, U.A.E., Chennai, India and Al Khobar, Saudi Arabia offices and are supported by additional resources from our Houston, Texas and Baku, Azerbaijan offices. The primary fabrication facility for this segment is located in Dubai, U.A.E.

The above-mentioned fabrication facilities in each segment are equipped with a wide variety of heavy-duty construction and fabrication equipment, including cranes, welding equipment, machine tools and robotic and other automated equipment. Project installation is performed by major construction vessels, which we own or lease and are stationed throughout the various regions and provide structural lifting/lowering and pipelay services. These major construction vessels are supported by our multi-function vessels and chartered vessels from third parties to perform a wide array of installation activities that include anchor handling, pipelay, cable/umbilical lay, dive support and hookup/commissioning.

Results of Operations

Selected Financial Data:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(In thousands)
Revenues:
Asia Pacific	$	229,829		$	338,464		$	555,891		$	635,499
Atlantic		186,554			110,304			334,738			209,908
Middle East		230,867			440,480			564,109			771,519
Total revenues	$	647,250		$	889,248		$	1,454,738		$	1,616,926
Operating income (loss):
Asia Pacific	$	(32,395	)	$	46,605		$	55,557		$	104,039
Atlantic		(48,651	)		(14,042	)		(65,061	)		(26,035	)
Middle East		(68,490	)		46,819			(86,999	)		81,554
Total operating income (loss)	$	(149,536	)	$	79,382		$	(96,503	)	$	159,558
Other income (expense):
Interest income, net	$	428		$	1,585		$	770		$	3,219
Gain on foreign currency—net		8,904			1,256			6,378			10,697
Other income (expense)—net		(31	)		51			751			(530	)
Total other income (expense)	$	9,301		$	2,892		$	7,899		$	13,386
Provision for Income Taxes	$	5,902		$	28,345		$	33,215		$	57,088
Total income from discontinued operations, net of tax	$	—		$	—		$	—		$	3,497
Net Income Attributable to Noncontrolling Interests	$	3,286		$	1,190		$	7,051		$	3,856

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Three months ended June 30, 2013

Revenues decreased approximately 27%, or $242.0 million, to $647.3 million in the three months ended June 30, 2013 compared to $889.3 million for the corresponding prior-year period, due to decreases in our Middle East and Asia Pacific segments.

Revenues in our Middle East segment decreased approximately 48%, or $209.6 million, to $230.9 million in the three months ended June 30, 2013 from $440.5 million in the corresponding prior-year period, driven primarily by delays in project execution discussed below and by several projects that had significantly higher marine activities and, to a lesser extent, higher fabrication during the three months ended June 30, 2012, as compared to the three months ended June 30, 2013. The decline was partially offset by increased activity on new and other existing projects, primarily in Saudi Arabia and the Caspian Sea.

Revenues in our Asia Pacific segment decreased approximately 32%, or $108.7 million, to $229.8 million in the three months ended June 30, 2013 from $338.5 million in the corresponding prior-year period. The revenue decline in the Asia Pacific segment was primarily influenced by delays in project execution discussed below and by lower marine activity resulting from the completion of one of our significant EPCI projects that was ongoing during the quarter ended June 30, 2012, but was completed prior to the quarter ended June 30, 2013. The decrease in revenue was partially offset by increased activity on existing and newly awarded projects.

Revenues in our Atlantic segment increased approximately 69%, or $76.3 million, to $186.6 million in the three months ended June 30, 2013 compared to $110.3 million in the three months ended June 30, 2012, influenced primarily by increased fabrication activity on newly awarded projects in Mexico, partially offset by lower fabrication activity at our Morgan City fabrication facility.

Cost of Operations

Cost of operations decreased approximately 5%, or $36.4 million, to $723.3 million in the three months ended June 30, 2013 compared to $759.7 million for the corresponding prior-year period, attributable to decreases in our Middle East and Asia Pacific segments, partially offset by an increase in our Atlantic segment. Cost of operations in the Middle East segment decreased $94.8 million, primarily as a result of reduced marine activities on one of our EPCI projects, partially offset by increased activity on new and other existing projects, primarily in Saudi Arabia and the Caspian Sea. The decrease in costs of operations in our Asia Pacific segment of $26.6 million was primarily attributable to lower marine activity on one of our EPCI projects, partially offset by increased activity on existing and newly awarded projects. Cost of operations in both the Middle East and Asia Pacific segments was significantly influenced by project charges associated with changes in estimates on certain projects, which significantly offset the decline in cost of operations. Cost of operations in our Atlantic segment increased $85.0 million, primarily due to increased fabrication activities associated with new projects in Mexico and cost overruns on certain projects in our Morgan City fabrication facility, due to lower labor productivity. These cost of operations variances are discussed in more detail below in the discussion regarding operating income.

Operating Income

Operating income decreased approximately $228.9 million to an operating loss of $149.5 million in the three months ended June 30, 2013, compared to operating income of $79.4 million for the corresponding prior-year period, attributable to operating losses across each segment.

The Middle East segment reported an operating loss of $68.5 million in the three months ended June 30, 2013, as compared to operating income of $46.8 million for the corresponding prior-year period, resulting in a decrease of $115.3 million. The decrease was primarily attributable to changes in estimates on one of our EPCI projects in Saudi Arabia. On that project, we increased our estimated cost at completion by

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approximately $38 million in the three months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the three months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

In addition, two other Middle East projects had significantly higher fabrication and marine activity in the prior-year period, resulting in a $35.0 million decline in operating income in the three months ended June 30, 2013 as compared to the corresponding prior-year period. One of those projects was completed prior to the quarter ended June 30, 2013, while the other project is expected to be completed by the middle of 2014.

The Asia Pacific segment reported an operating loss of $32.4 million in the three months ended June 30, 2013, as compared to operating income of $46.6 million for the corresponding prior-year period, resulting in a decrease of $79.0 million. The decrease in operating income was primarily due to project delays on a project in Malaysia related to the availability of marine vessels, specifically the marine vessel scheduled for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including those associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime. In addition, one of our EPCI projects that had significantly higher marine activity in the three months ended June 30, 2012 was completed prior to the three months ended June 30, 2013, resulting in a decline of approximately $45 million in operating income recognized in the Asia Pacific segment in the three months ended June 30, 2013 as compared to the corresponding prior-year period.

The Atlantic segment recognized an operating loss of $48.7 million in the three months ended June 30, 2013, compared to an operating loss of $14.0 million in the three months ended June 30, 2012. This change was primarily due to changes in estimates on two projects and restructuring charges. On one of those projects, we recognized approximately $7.0 million of incremental project losses in the three months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. We also recognized project losses of approximately $3.0 million in the three months ended June 30, 2013 on a fabrication project in Morgan City, which was completed during the quarter ended June 30, 2013.

During the quarter ended June 30, 2013, we commenced restructuring the Atlantic operations. Costs associated with the restructuring primarily include severance and other personnel costs, asset impairment and relocation costs and future unutilized lease costs. These costs are expected to range between $45 million to $60 million and the majority of these costs are expected to be recognized over the four quarters beginning with the quarter ended June 30, 2013. Of the total anticipated costs, the Atlantic segment recognized approximately $15.5 million during the quarter ended June 30, 2013.

The results of the Atlantic segment also includes two projects in Brazil that contributed revenues but no income in the three months ended June 30, 2013. One of those projects is a five-year charter that began in early 2012. We are accounting for the other project under our deferred profit recognition policy, due to the “first of a kind” nature of the project, and we expect to recognize profit attributable to this contract by the end of 2013. These projects contain significant levels of uncertainty and, as a result, we can provide no assurance as to the expected operating margins for the year ending December 31, 2013.

Operating income is frequently influenced by the resolution of change orders, project close-outs and settlements, which generally can cause operating margins to improve during the period in which these items are approved or finalized as these items generally contribute higher operating margins. While we expect change

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orders, close-outs and settlements to continue as part of our normal business activities, the period in which they are recognized is largely driven by the finalization of agreements with customers and suppliers and, as a result, is difficult to predict. Additionally, the future margin increases or decreases associated with these items are difficult to predict, due to, among other items, the difficulty of predicting the timing of recognition of change orders, close-outs and settlements and the timing of new project awards.

Other Items in Operating Income

Selling, general and administrative expenses increased $5.1 million to $52.6 million in the three months ended June 30, 2013 as compared to $47.5 million in the three months ended June 30, 2012, as a result of stock-based compensation and, to a lesser extent, costs associated with our bids and proposals.

Equity in loss of unconsolidated affiliates changed $2.8 million to a loss of $5.5 million for the three months ended June 30, 2013, as compared to a loss of $2.7 million in the three months ended June 30, 2012, primarily attributable to increased equity losses from two of our unconsolidated joint ventures.

Other Items

Results for the quarters ended June 30, 2013 and 2012 were not significantly impacted by interest income, net or other income (expense), net, due primarily to lower cash and cash equivalents balances, the continuation of low interest rates in general and the capitalization of interest expense on capital projects.

Gain on foreign currency—net increased by $7.6 million to $8.9 million in the three months ended June 30, 2013 from $1.3 million in the three months ended June 30, 2012, primarily due to foreign currency gains of $1.6 million and gains related to derivative instruments and hedging activities of $7.3 million recognized during the three months ended June 30, 2013, as compared to foreign currency losses of approximately $7.9 million and gains related to derivative instruments and hedging activities of $9.1 million recognized during the three months ended June 30, 2012.

Provision for Income Taxes

For the three months ended June 30, 2013, we recognized a loss before provision for income taxes of $140.2 million, compared to income of $82.3 million in the three months ended June 30, 2012. In the aggregate, the provision for income taxes was $5.9 million and $28.3 million for the three months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

Noncontrolling Interests

Net income attributable to noncontrolling interests increased by $2.1 million to $3.3 million in the three months ended June 30, 2013 compared to $1.2 million for the three months ended June 30, 2012, primarily due to increased activity at one of our consolidated joint ventures.

Six months ended June 30, 2013

Revenues

Revenues decreased approximately 10%, or $162.2 million, to approximately $1.5 billion in the six months ended June 30, 2013 compared to $1.6 billion for the corresponding prior-year period, due to decreases in our Middle East and Asia Pacific segments.

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Revenues in our Middle East segment decreased approximately 27%, or $207.4 million, to $564.1 million in the six months ended June 30, 2013 from $771.5 million in the corresponding prior-year period, driven primarily by delays in project execution discussed below and by several projects that had significantly higher marine activities during the six months ended June 30, 2012, as compared to the six months ended June 30, 2013. The decline was partially offset by increased activity on new and other existing projects, primarily in Saudi Arabia and the Caspian Sea.

Revenues in our Asia Pacific segment decreased approximately 13%, or $79.6 million, to $555.9 million in the six months ended June 30, 2013 from $635.5 million in the corresponding prior-year period. The revenue decline in the Asia Pacific segment was primarily influenced by delays in project execution discussed below and by lower marine activity resulting from the completion of one of our significant EPCI projects that was ongoing during the six months ended June 30, 2012 but was completed prior to the six months ended June 30, 2013. The decrease in revenue was partially offset by increased activity on existing and, to a lesser extent, newly awarded projects.

Revenues in our Atlantic segment increased approximately 59%, or $124.8 million, to $334.7 million in the six months ended June 30, 2013 compared to $209.9 million in the six months ended June 30, 2012, influenced primarily by increased fabrication activity on newly awarded projects in Mexico, which was partially offset by lower fabrication activity at our Morgan City fabrication facility.

Cost of Operations

Cost of operations increased approximately 6%, or $78.9 million, to $1.4 billion in the six months ended June 30, 2013 compared to the six months ended June 30, 2012, attributable to an increase in our Atlantic segment, partially offset by decreases in our Middle East and Asia Pacific segments. Cost of operations in our Atlantic segment increased $135.1 million, primarily due to increased fabrication activities associated with new projects in Mexico and cost overruns on certain projects at our Morgan City fabrication facility. Costs of operations in the Middle East segment decreased $40.4 million, primarily as a result of reduced marine activities on one of our EPCI projects, partially offset by increased activity on new and other existing projects, primarily in Saudi Arabia and the Caspian Sea. The decrease in costs of operations in our Asia Pacific segment of $15.8 million was primarily due to lower marine activity on one of our significant EPCI projects that was ongoing during the six months ended June 30, 2012, but was nearing completion during the six months ended June 30, 2013. These cost of operations variances are discussed in more detail below in the discussion regarding operating income.

Operating Income

Operating income decreased $256.1 million to an operating loss of $96.5 million in the six months ended June 30, 2013 from operating income of $159.6 million in the six months ended June 30, 2012, attributable to declines experienced in each segment.

The Middle East segment reported an operating loss of $87.0 million in the six months ended June 30, 2013, as compared to operating income of $81.6 million for the corresponding prior-year period, a decrease of $168.6 million. The decrease was primarily attributable to changes in estimates on one of our EPCI projects in Saudi Arabia that resulted in a project loss of approximately $43 million in the six months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in estimated costs to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the six months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

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In addition, two other Middle East projects, which had significantly higher fabrication and marine activity in the prior-year period, contributed approximately $67 million to the decline in operating results recognized in the Middle East segment. One of those projects was completed prior to the six months ended June 30, 2013, while the other project is expected to be completed by the middle of 2014.

The Asia Pacific segment reported operating income of $55.6 million in the six months ended June 30, 2013, as compared to operating income of $104.0 million for the corresponding prior-year period, resulting in a decrease of $48.4 million. The decrease in operating income was primarily attributable to project charges of approximately $66.0 million on one of our subsea projects (the project in Malaysia discussed above). These charges were primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime. In addition, one of our major EPCI projects that had significantly higher marine activity in the six months ended June 30, 2012 and was substantially complete prior to the six months ended June 30, 2013 contributed approximately $34 million to the decline in operating income recognized in the Asia Pacific segment. The decrease in operating income was partially offset by increased activity on existing and newly awarded projects.

The Atlantic segment recognized an operating loss of $65.1 million in the six months ended June 30, 2013, compared to an operating loss of $26.0 million in the six months ended June 30, 2012. This change was primarily due to increased cost overruns on certain projects and restructuring charges. The Atlantic segment recognized approximately $14.0 million of incremental project losses on one project in the six months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. The results of the Atlantic segment also include two projects in Brazil that contributed revenues but no income in the six months ended June 30, 2013. One of those projects is a five-year charter that began in early 2012. We are accounting for the other project under our deferred profit recognition policy, due to the “first of a kind” nature of the project.

As discussed above, we commenced restructuring the Atlantic operations during the three months ended June 30, 2013.

Other Items in Operating Income

Selling, general and administrative expenses increased $10.7 million to $104.8 million in the six months ended June 30, 2013 as compared to $94.1 million in the six months ended June 30, 2012. The increase was primarily due to increased bid and proposal costs and, to a lesser extent, costs incurred in connection with the Deepsea acquisition and costs associated with stock-based compensation.

Equity in income (loss) of unconsolidated affiliates increased $3.3 million to a loss of $9.6 million in the six months ended June 30, 2013 as compared to a loss of $6.3 million in the six months ended June 30, 2012, primarily attributable to increased equity losses from two of our unconsolidated joint ventures.

Other Items

Results for the six months ended June 30, 2013 and 2012 were not significantly impacted by interest income, net or other income (expense).

Gain on foreign currency—net decreased by $4.3 million to income of $6.4 million in the six months ended June 30, 2013 from income of $10.7 million in the six months ended June 30, 2012, primarily due to gains related to derivative instruments and hedging activities of approximately $4.4 million recognized during the 2013 period, as compared to gains related to derivative instruments and hedging activities of approximately $12.0 million recognized during the 2012 period.

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Provision for Income Taxes

For the six months ended June 30, 2013, we recognized a loss before provision for income taxes of $88.6 million, compared to income of $172.9 million in the six months ended June 30, 2012. In the aggregate, the provision for income taxes was $33.2 million and $57.1 million for the six months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

At June 30, 2013, we had foreign net operating loss carryforwards available to offset future taxable income in foreign jurisdictions with a valuation allowance of $69 million against $78 million of the related deferred taxes. The remaining $9 million of foreign deferred taxes is expected to be realized through future foreign taxable income. At June 30, 2013, we had U.S. federal net operating loss carryforwards but had fully reserved the $133 million deferred tax asset.

Discontinued Operations

On March 19, 2012, we completed the sale of our former charter fleet business for cash consideration of approximately $61 million, resulting in a gain on the sale of approximately $0.3 million. Total income from discontinued operations, net of tax was income of $3.5 million for the six months ended June 30, 2012.

Noncontrolling Interests

Net income attributable to noncontrolling interests increased by $3.2 million to $7.1 million in the six months ended June 30, 2013 from $3.9 million in the six months ended June 30, 2012, primarily due to increased activity at two of our consolidated joint ventures.

Backlog

Backlog represents the dollar amount of revenues we expect to recognize in the future from contracts awarded and those that are in progress. These amounts are presented in U.S. dollars and are based on rates that we have contractually agreed to with our customers. Currency risk associated with backlog contracts that is not naturally mitigated within the contract is generally mitigated with the use of foreign currency derivative (hedging) instruments, when deemed significant. However, these actions may not eliminate all currency risk exposure included within our long-term contracts. Backlog is not a measure defined by generally accepted accounting principles and is not a measure of contract profitability. Our methodology for determining backlog may not be comparable to methodologies used by other companies in determining their backlog amounts. The backlog values we disclose include anticipated revenues associated with: (1) the original contract amounts; (2) change orders for which we have received written confirmations from the applicable customers; (3) change orders for which we expect to receive confirmations in the ordinary course of business; and (4) claims that we have made against our customers. We do not include expected revenues of contracts related to unconsolidated joint ventures in our backlog, except to the extent of any contract awards we may receive from those joint ventures.

We include unapproved change orders for which we expect to receive confirmations in the ordinary course of business in backlog, generally to the extent of the lesser of the amounts management expects to recover or the associated costs incurred. Any revenue that would represent profit associated with unapproved change orders is generally excluded from backlog until written confirmation is obtained from the applicable customer. However, consideration is given to our history with the customer as well as the contractual basis under which we may be operating. Accordingly, in certain cases based on our historical experience in resolving unapproved change orders with a customer, the associated profit may be included in backlog. The total unapproved change orders included in our estimates at completion aggregated approximately $445 million, of which approximately $170 million was included in backlog at June 30, 2013. If an unapproved change order is under dispute or has been previously rejected by the customer, the associated amount of revenue is treated as a claim.

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For amounts included in backlog that are attributable to claims, we include those claims in backlog when we have a legal basis to do so, consider collection to be probable and believe we can reliably estimate the ultimate value. Claims revenue is included in backlog to the extent of the lesser of the amounts management expects to recover or associated costs incurred. Total claims revenue included in backlog at June 30, 2013 and December 31, 2012 was approximately $58 million and $85 million, respectively. See Note 1 to our unaudited condensed consolidated financial statements included in this report for a discussion of claims revenue included in our estimates at completion as of June 30, 2013.

Backlog may not be indicative of future operating results, and projects in our backlog may be cancelled, modified or otherwise altered by customers. We can provide no assurance as to the profitability of our contracts reflected in backlog. It is possible that our estimates of profit could increase or decrease based on changes in productivity, actual downtime and the resolution of change orders and claims with the customers.

Of the June 30, 2013 backlog amount of $5.1 billion, approximately $375.1 million relates to three active projects that are in loss positions, whereby future revenues are expected to be equal to costs when recognized. In addition, approximately $187.2 million of such backlog is associated with a marine project in our Asia Pacific segment, which we expect to complete by the middle of 2014, and approximately $180.8 million pertains to a five-year charter in Brazil, which we began in early 2012 in our Atlantic segment. Additionally, we have a project in the Atlantic segment that we are accounting for under our deferred profit recognition policy, representing $211.9 million of the June 30, 2013 backlog.

The following table summarizes changes to our backlog:

(In thousands)
Backlog at December 31, 2012	$	5,067,164
Bookings from new awards		992,479
Additions and reductions on existing contracts		485,963
Less: Amounts recognized in revenues		1,454,738
Backlog at June 30, 2013	$	5,090,868

Our backlog by segment was as follows:

	June 30, 2013				December 31, 2012
	(In thousands)
Asia Pacific	$	2,646,123	52	%	$	3,003,358	59	%
Atlantic		920,144	18	%		978,853	20	%
Middle East		1,524,601	30	%		1,084,953	21	%
Total Backlog	$	5,090,868	100	%	$	5,067,164	100	%

Of the June 30, 2013 backlog, we expect to recognize revenues as follows:

	2013		2014		Thereafter
	(In thousands)
Total Backlog	$	1,461,976	$	2,218,299	$	1,410,593

Liquidity and Capital Resources

Our primary source of liquidity is cash flows generated from operations. Revolving borrowings under the credit agreement we entered into with a syndicate of lenders and letter of credit issuers in May 2010, as amended in August 2011, and March 2013 and August 2013 (the “Credit Agreement”), provide an additional resource to fund our operating and investing activities. Management believes the sources of liquidity and capital resources described above will be sufficient to fund our liquidity requirements for the next twelve months.

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Capital Expenditures

As part of our strategic growth program, our management regularly evaluates our marine vessel fleet to ensure our fleet capability is adequately aligned with our overall growth strategy. These assessments may result in capital expenditures to upgrade, acquire or operate vessels that would enhance or grow our technical capabilities, or may involve engaging in discussions to dispose of certain marine vessels.

Capital expenditures for the six months ended June 30, 2013 were $144.5 million, as compared to $131.7 million for the six months ended June 30, 2012. Capital expenditures for the six months ended June 30, 2013 were primarily attributable to the construction of the Lay Vessel 108 (“LV 108”) and upgrades to the Lay Vessel North Ocean 105 (“NO 105”) and DB 32, as well as costs associated with upgrading the capabilities of other marine vessels. The NO 105 was placed into service in 2012. Capital expenditures in the six months ended June 30, 2012 were primarily attributable to the construction of the NO 105 and an upgrade of the capabilities of the North Ocean 102 (“NO 102”), as well as other upgrades to other marine vessels in our fleet.

In addition, based on our expectations relating to the demand in the deepwater market, in December 2012, we entered into a contract to construct another vessel—the Deepwater Lay Vessel 2000 (“DLV 2000”). Like the LV 108, the DLV 2000 is designed for advanced deepwater subsea and marine construction operations. Over the next three years, we expect to incur capital expenditures ranging from approximately $650.0 million to $750.0 million associated with the construction of the LV 108 and DLV 2000 vessels.

Cash, Cash Equivalents and Investments

In the aggregate, our cash and cash equivalents, restricted cash and investments decreased by $231.1 million to $473.2 million at June 30, 2013 from $704.3 million at December 31, 2012.

At June 30, 2013, we had current restricted cash and cash equivalents totaling $24.5 million, all of which was held in restricted foreign-entity accounts.

At June 30, 2013, we had investments with a fair value of $21.0 million. Our investment portfolio consists of commercial paper, corporate notes and bonds, asset-backed commercial paper notes backed by a pool of mortgage-backed securities and mutual funds. Our investments are classified as available for sale and are carried at fair value with unrealized gains and losses, net of tax, reported as a component of other comprehensive income (loss). Our net unrealized loss on investments was $1.9 million and $2.4 million at June 30, 2013 and December 31, 2012, respectively. The major components of our investments in an unrealized loss position are asset-backed and mortgage-backed obligations.

Our current assets, less current liabilities, excluding cash and cash equivalents and current restricted cash decreased by $120.9 million to a liability position of $102.4 million at June 30, 2013 from an $18.5 million asset position at December 31, 2012, primarily due to decreases in receivables and short-term investments and, to a lesser extent, increases in short-term notes payable and accounts payable.

Contracts in Progress and Advanced Billings on Contracts

Our net contracts in progress and advanced billings on contracts increased by $4.0 million to $322.5 million at June 30, 2013 from $318.5 million at December 31, 2012.

Cash Flow Activities—Continuing Operations

Operating activities. Our net cash used in operating activities was $96.5 million in the six months ended June 30, 2013, compared to net cash provided by operating activities of $91.2 million in the six months ended June 30, 2012. This change was primarily attributable to the operating loss in the six months ended June 30, 2013 as compared to the six months ended June 30, 2012.

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Investing activities. Our net cash used in investing activities was $96.7 million in the six months ended June 30, 2013, compared to cash used in investing activities of $76.2 million in the three months ended June 30, 2012. This change was primarily attributable to a decrease in the sales and purchases of available-for-sale securities and an increase in the purchases of plant, property and equipment, partially offset by proceeds associated with vessel sales.

Financing activities. Our net cash used in financing activities was $19.4. million in the six months ended June 30, 2013 as compared to net cash used in financing activities of $2.3 million in the six months ended June 30, 2012. The change was primarily attributable to increased payments related to the financing for the NO 105 and NO 102.

Credit Agreement

The Credit Agreement provides for revolving credit borrowings and issuances of letters of credit in an aggregate outstanding amount of up to $950.0 million and is scheduled to mature on August 19, 2016. Proceeds from borrowings under the Credit Agreement are available for working capital needs and other general corporate purposes. The Credit Agreement includes procedures for additional financial institutions to become lenders, or for any existing lender to increase its commitment thereunder.

On August 2, 2013, we amended the Credit Agreement to, among other things: (1) add certain amounts to EBITDA (as defined in the Credit Agreement) for the fiscal quarters ended December 31, 2012, March 31, 2013 and June 30, 2013; (2) permit us to add to EBITDA certain cash expenses related to the Atlantic segment restructuring for the quarters ending September 30, 2013, December 31, 2013 and March 31, 2014; and (3) increase the maximum permitted leverage ratio of total indebtedness to EBITDA from 3.00:1.00 to 3.75:1.00 for the quarters ending September 30, 2013, December 31, 2013 and March 31, 2014. The August amendment to the Credit Agreement also provides that if we issue senior unsecured notes with a principal amount of at least $300 million, from the date of such issuance until March 31, 2014, the maximum permitted leverage ratio will increase from 3.75:1.00 to 5.00:1.00 and we will have to comply with a maximum permitted secured leverage ratio of total secured indebtedness to EBITDA of 2.00:1.00. The maximum leverage ratio and the minimum interest coverage ratio as defined in the Credit Agreement may differ in the method of calculation from similarly titled measures used by other companies or in other agreements. The Credit Agreement also contains covenants that restrict, among other things, debt incurrence, liens, investments, acquisitions, asset dispositions, dividends, prepayments of subordinated debt, mergers and capital expenditures.

Other than customary mandatory prepayments in connection with casualty events, the Credit Agreement requires only interest payments on a quarterly basis until maturity. We may prepay all loans under the Credit Agreement at any time without premium or penalty (other than customary LIBOR breakage costs), subject to certain notice requirements.

Our overall borrowing capacity is in large part dependent on maintaining compliance with covenants under the Credit Agreement by generating sufficient income from operations. At June 30, 2013, we were in compliance with our covenant requirements. A comparison of the key financial covenants and compliance (prior to the amendment to the credit Agreement effected in August 2013) is as follows:

	Required		Actual
Maximum leverage ratio		3.00		0.92
Minimum interest coverage ratio		4.00		17.19

Loans outstanding under the Credit Agreement bear interest at the borrower’s option at either the Eurodollar rate plus a margin ranging from 1.50% to 2.50% per year or the base rate (the highest of the Federal Funds rate plus 0.50%, the 30-day Eurodollar rate plus 1.0%, or the administrative agent’s prime rate) plus a margin ranging from 0.50% to 1.50% per year. The applicable margin for revolving loans varies depending on the credit ratings

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of the Credit Agreement. We are charged a commitment fee on the unused portions of the Credit Agreement, and that fee varies between 0.200% and 0.450% per year depending on the credit ratings of the Credit Agreement. Additionally, we are charged a letter of credit fee of between 1.50% and 2.50% per year with respect to the amount of each financial letter of credit issued under the Credit Agreement and a letter of credit fee of between 0.75% and 1.25% per year with respect to the amount of each performance letter of credit issued under the Credit Agreement, in each case depending on the credit ratings of the Credit Agreement. Under the Credit Agreement, we also pay customary issuance fees and other fees and expenses in connection with the issuance of letters of credit under the Credit Agreement. In connection with entering into the Credit Agreement and certain amendments to the Credit Agreement, we paid certain fees to the lenders thereunder, and certain arrangement and other fees to the arrangers and agents for the Credit Agreement, which are being amortized to interest expense over the term of the Credit Agreement.

At June 30, 2013, there were no borrowings outstanding, and letters of credit issued under the Credit Agreement totaled $265.8 million. At June 30, 2013, there was $684.2 million available for borrowings or to meet letter of credit requirements under the Credit Agreement. There were no borrowings under the Credit Agreement during the quarter ended June 30, 2013. Had there been any such borrowings at June 30, 2013, the applicable base interest rate would have been approximately 4.0% per annum. In addition, we had $116.4 million in outstanding unsecured bilateral letters of credit at June 30, 2013.

At June 30, 2013, based on the credit ratings applicable to the Credit Agreement, the applicable margin for Eurodollar-rate loans was 1.75%, the applicable margin for base-rate loans was 0.75%, the letter of credit fee for financial letters of credit was 1.75%, the letter of credit fee for performance letters of credit was 0.875%, and the commitment fee for unused portions of the Credit Agreement was 0.25%. The Credit Agreement does not have a floor for the base rate or the Eurodollar rate.

North Ocean Financing

North Ocean 102

In December 2009, J. Ray McDermott, S.A. (“JRMSA”), a wholly owned subsidiary of MII, entered into a vessel-owning joint venture transaction with Oceanteam ASA. As a result of this transaction, we had consolidated notes payable of $34.4 million and $37.3 million on our consolidated balance sheets at June 30, 2013 and December 31, 2012, respectively, of which $34.4 million and $6.0 million was classified as current notes payable at June 30, 2013 and December 31, 2012, respectively. JRMSA has guaranteed approximately 50% of this debt based on its ownership percentages in the vessel-owning companies. The outstanding debt bears interest at a rate equal to the three-month LIBOR (which resets every three months) plus a margin of 3.315% and matures in January 2014.

North Ocean 105

On September 30, 2010, MII, as guarantor, and North Ocean 105 AS, in which we have a 75% ownership interest, as borrower, entered into a financing agreement to finance a portion of the construction costs of the North Ocean 105. The agreement provides for borrowings of up to $69.4 million, bearing interest at 2.76% per year, and requires principal repayment in 17 consecutive semi-annual installments, which commenced on October 1, 2012. Borrowings under the agreement are secured by, among other things, a pledge of all of the equity of North Ocean 105 AS, a mortgage on the North Ocean 105, and a lien on substantially all of the other assets of North Ocean 105 AS. MII unconditionally guaranteed all amounts to be borrowed under the agreement. There was $61.3 million and $65.4 million in borrowings outstanding under this agreement on our balance sheets at June 30, 2013 and December 31, 2012, respectively, of which $8.2 million was classified as current notes payable at June 30, 2013 and December 31, 2012.

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ANZ Reimbursement Agreement

On April 20, 2012, McDermott and one of its wholly owned subsidiaries, McDermott Australia Pty. Ltd. (“McDermott Australia”), entered into a secured Letter of Credit Reimbursement Agreement (the “Reimbursement Agreement”) with Australia and New Zealand Banking Group Limited (“ANZ”). In accordance with the terms of the Reimbursement Agreement, ANZ issued letters of credit in the aggregate amount of approximately $109.0 million to support McDermott Australia’s performance obligations under contractual arrangements relating to a field development project. The obligations of McDermott and McDermott Australia under the Reimbursement Agreement are secured by McDermott Australia’s interest in the contractual arrangements and certain related assets.

Surety Bonds

In 2012 and 2007, JRMSA executed general agreements of indemnity in favor of surety underwriters based in Mexico relating to surety bonds issued in support of contracting activities of J. Ray McDermott de Mèxico, S.A. de C.V., a subsidiary of JRMSA. As of June 30, 2013, the aggregate principal amount of bonds issued under these arrangements totaled $46.2 million.

Derivative Contracts

We previously entered into derivative contracts to mitigate currency exchange movements primarily associated with certain firm purchase commitments and various foreign currency expenditures we expect to incur on one of our Asia Pacific segment’s EPCI projects through 2017. While we currently believe that these contracts will be effective in mitigating the associated currency exchange risks, it is possible that changes in the project may cause reduced effectiveness of these derivative contracts. Therefore, we may experience larger gains or losses on foreign currency movements due to the ineffective portion or the portion excluded from the assessment of effectiveness of these and other derivative contracts.

At June 30, 2013, our derivative financial instruments consisted primarily of foreign currency forward contracts. The notional value of our outstanding derivative contracts totaled approximately $1.5 billion at June 30, 2013, with maturities extending through 2017. Of this amount, approximately $815.9 million is associated with various foreign currency expenditures we expect to incur on the Asia Pacific segment project.

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Item 3. Quantitative and Qualitative Disclosures about Market Risk

Our exposures to market risks have not changed materially from those disclosed in Item 7A included in Part II of our annual report on Form 10-K for the year ended December 31, 2012.

Item 4. Controls and Procedures

As of the end of the period covered by this quarterly report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) adopted by the SEC under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). Our disclosure controls and procedures were developed through a process in which our management applied its judgment in assessing the costs and benefits of such controls and procedures, which, by their nature, can provide only reasonable assurance regarding the control objectives. You should note that the design of any system of disclosure controls and procedures is based in part upon various assumptions about the likelihood of future events, and we cannot assure you that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how remote. Based on the evaluation referred to above, our Chief Executive Officer and Chief Financial Officer concluded that the design and operation of our disclosure controls and procedures are effective as of June 30, 2013 to provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission, and such information is accumulated and communicated to management, including our principal executive and principal financial officers or persons performing similar functions, as appropriate to allow timely decisions regarding disclosure. There has been no change in our internal control over financial reporting during the quarter ended June 30, 2013 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II

OTHER INFORMATION

Item 1. Legal Proceedings

For information regarding ongoing investigations and litigation, see Note 10 to our unaudited condensed consolidated financial statements in Part I of this report, which we incorporate by reference into this Item.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information on our purchases of equity securities during the quarter ended June 30, 2013, all of which involved repurchases of shares of MII common stock in connection with the vesting of restricted stock units pursuant to the provisions of employee benefit plans that permit the repurchase of common stock to satisfy statutory tax withholding obligations associated with the vesting of restricted stock units:

Period	Total number of shares purchased		Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs		Maximum number of shares that may yet be purchased under the plans or programs
April 1—April 30, 2013		—	$	—		not applicable		not applicable
May 1—May 31, 2013		5,151		8.88		not applicable		not applicable
June 1—June 30, 2013		214		8.96		not applicable		not applicable
Total		5,365	$	8.99		not applicable		not applicable

Item 5. Other Information

Pending Retirement of Chief Operating Officer

Mr. John T. McCormack, our Executive Vice President and Chief Operating Officer, informed the Company that he intends to retire effective in the fourth quarter of 2013.

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Item 6. Exhibits

Exhibit Number	Description
3.1*	McDermott International, Inc.’s Amended and Restated Articles of Incorporation (incorporated by reference to Exhibit 3.1 to McDermott International, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008 (File No. 1-08430)).
3.2*	McDermott International, Inc.’s Amended and Restated By-Laws (incorporated by reference to Exhibit 3.2 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2010 (file No. 1-08430)).
3.3*	Amended and Restated Certificate of Designation of Series D Participating Preferred Stock of McDermott International, Inc. (incorporated by reference to Exhibit 3.3 to McDermott International, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2001 (File No. 1-08430)).
4.1	Amendment No. 3 to Credit Agreement, dated as of August 2, 2013, the parties to which include McDermott International, Inc., as borrower, certain of its wholly owned subsidiaries, as guarantors, certain banks and financial institutions executing the signature pages thereto, as lenders and letter of credit issuers, and Crédit Agricole Corporate and Investment Bank, as administrative agent.
31.1	Rule 13a-14(a)/15d-14(a) certification of Chief Executive Officer.
31.2	Rule 13a-14(a)/15d-14(a) certification of Chief Financial Officer.
32.1	Section 1350 certification of Chief Executive Officer.
32.2	Section 1350 certification of Chief Financial Officer.

* Incorporated by reference to the filing indicated.

101.INS XBRL Instance Document

101.SCH XBRL Taxonomy Extension Schema Document

101.CAL XBRL Taxonomy Extension Calculation Linkbase Document

101.LAB XBRL Taxonomy Extension Label Linkbase Document

101.PRE XBRL Taxonomy Extension Presentation Linkbase Document

101.DEF XBRL Taxonomy Extension Definition Linkbase Document

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

McDERMOTT INTERNATIONAL, INC.
By:	/s/ PERRY L. ELDERS
	Perry L. Elders Senior Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

August 5, 2013

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EXHIBIT INDEX

Exhibit Number	Description
3.1*	McDermott International, Inc.’s Amended and Restated Articles of Incorporation (incorporated by reference to Exhibit 3.1 to McDermott International, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2008 (File No. 1-08430)).
3.2*	McDermott International, Inc.’s Amended and Restated By-Laws (incorporated by reference to Exhibit 3.2 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2010 (file No. 1-08430)).
3.3*	Amended and Restated Certificate of Designation of Series D Participating Preferred Stock of McDermott International, Inc. (incorporated by reference to Exhibit 3.3 to McDermott International, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2001 (File No. 1-08430)).
4.1	Amendment No. 3 to Credit Agreement, dated as of August 2, 2013, the parties to which include McDermott International, Inc., as borrower, certain of its wholly owned subsidiaries, as guarantors, certain banks and financial institutions executing the signature pages thereto, as lenders and letter of credit issuers, and Crédit Agricole Corporate and Investment Bank, as administrative agent.
31.1	Rule 13a-14(a)/15d-14(a) certification of Chief Executive Officer.
31.2	Rule 13a-14(a)/15d-14(a) certification of Chief Financial Officer.
32.1	Section 1350 certification of Chief Executive Officer.
32.2	Section 1350 certification of Chief Financial Officer.

* Incorporated by reference to the filing indicated.

101.INS XBRL Instance Document

101.SCH XBRL Taxonomy Extension Schema Document

101.CAL XBRL Taxonomy Extension Calculation Linkbase Document

101.LAB XBRL Taxonomy Extension Label Linkbase Document

101.PRE XBRL Taxonomy Extension Presentation Linkbase Document

101.DEF XBRL Taxonomy Extension Definition Linkbase Document

EX-4.1

Exhibit 4.1

AMENDMENT NO. 3 TO CREDIT AGREEMENT

dated as of August 2, 2013

among

MCDERMOTT INTERNATIONAL, INC.

as the Borrower

and

THE LENDERS AND ISSUERS PARTY HERETO

and

CRÉDIT AGRICOLE CORPORATE AND INVESTMENT BANK

as Administrative Agent, Collateral Agent, Joint Lead Arranger and Joint Bookrunner

and

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

and

WELLS FARGO SECURITIES, LLC

as Joint Lead Arrangers and Joint Bookrunners

and

BNP PARIBAS

as Syndication Agent

and

WELLS FARGO BANK, N.A.

and

BANK OF AMERICA, N.A.

and

DNB BANK ASA, NEW YORK BRANCH

and

BBVA COMPASS

as Co-Documentation Agents

AMENDMENT NO. 3

This AMENDMENT NO. 3 (the “Amendment”) dated as of August 2, 2013 (the “Amendment No. 3 Effective Date”), is among MCDERMOTT INTERNATIONAL, INC., a Panamanian corporation (“Borrower”), the Lenders and Issuers listed on the signature pages hereto, the Guarantors party hereto, and CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK, as administrative agent (in such capacity, the “Administrative Agent”). Reference is made to the Credit Agreement dated May 3, 2010, among the Borrower, the Administrative Agent, and the Lenders and Issuers party thereto, as amended by Amendment No. 1 and Consent dated as of August 19, 2011 and as further amended by Amendment No. 2 and Consent dated as of March 25, 2013 (such Credit Agreement, as so amended, the “Credit Agreement”).

The parties hereto hereby agree as follows:

Section 1. Defined Terms; Other Definitional Provisions. As used in this Amendment, each of the terms defined herein shall have the meanings assigned to such terms herein. Each term defined in the Credit Agreement and used herein without definition shall have the meaning assigned to such term in the Credit Agreement, unless expressly provided to the contrary. The words “hereof”, “herein”, and “hereunder” and words of similar import when used in this Amendment shall refer to this Amendment as a whole and not to any particular provision of this Amendment. Paragraph headings have been inserted in this Amendment as a matter of convenience for reference only and it is agreed that such paragraph headings are not a part of this Amendment and shall not be used in the interpretation of any provision of this Amendment.

Section 2. Amendments to Credit Agreement.

(a) Section 1.1 of the Credit Agreement is hereby amended by:

(i) adding the following new definitions in the appropriate alphabetical order:

“Atlantic Restructuring” means (i) the closure of the Borrower’s Morgan City Yard and New Orleans office, (ii) the Borrower’s exit from its Brazilian joint venture and (iii) the other restructuring activities described as the “Atlantic Restructuring” in the Borrower’s Form 10-Q for the Fiscal Quarter ended June 30, 2013.

“Atlantic Restructuring Cash Charges” means, for any Fiscal Quarter, the GAAP expenses attributable to the Atlantic Restructuring during such Fiscal Quarter, less the non-cash charges and impairments related to the Atlantic Restructuring during such Fiscal Quarter.

“Atlantic Restructuring Cash Charges Limit” means, (i) for the Fiscal Quarter ending September 30, 2013, $20,400,000.00, (ii) for the Fiscal Quarter ending December 31, 2013, $20,400,000.00 minus the Atlantic Restructuring Cash Charges for the Fiscal Quarter ending September 30, 2013, and (iii) for the Fiscal Quarter ending March 31, 2014, $20,400,000.00 minus the Atlantic Restructuring Cash Charges for the Fiscal Quarters ending September 30, 2013 and December 31, 2013.

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“Senior Notes” means senior unsecured promissory notes issued by the Borrower under an indenture or note purchase agreement with a maturity at least one year after the Revolving Facility Termination Date and an original principal amount of at least $300,000,000.00.

“Senior Secured Leverage Ratio” means, as of any day, the ratio of (a) Financial Covenant Debt as of such day that is secured by a Lien on any Collateral to (b) EBITDA for the last four full Fiscal Quarters ending prior to such day.

(ii) amending clause (iii) of the definition of “Cobia Permitted Acquisition” to read as follows:

(iii) immediately after giving effect to such transactions, (A) no Default or Event of Default shall have occurred and be continuing and the Borrower shall have demonstrated to the Administrative Agent compliance with Section 5.1 (Maximum Leverage Ratio) on a pro forma basis as of the most recent Fiscal Quarter end for which financial statements are available as if such maximum Leverage Ratio and Senior Secured Leverage Ratio were each 0.25:1.00 more restrictive than as set forth in Section 5.1 (Maximum Leverage Ratio) and (B) the statement set forth in Section 3.2(b)(i) (Representations and Warranties; No Defaults) shall be true;

(iii) amending clause (b) of the definition of “Cobia Permitted Investments” to read as follows:

(b) immediately after giving effect to such Investment, (i) no Default or Event of Default shall have occurred and be continuing and, if such Investment or series of related Investments exceeds $20,000,000.00, the Borrower shall have demonstrated to the Administrative Agent compliance with Section 5.1 (Maximum Leverage Ratio) on a pro forma basis as of the most recent Fiscal Quarter end for which financial statements are available as if such maximum Leverage Ratio and Senior Secured Leverage Ratio were each 0.25:1.00 more restrictive than as set forth in Section 5.1 (Maximum Leverage Ratio) and (ii) the statement set forth in Section 3.2(b)(i) (Representations and Warranties; No Defaults) shall be true;

(iv) amending the definition of “EBITDA” to read as follows:

“EBITDA” means, for any period:

(a) Consolidated Net Income for such period plus

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(b) the sum of, in the case of clauses (b)(i), (b)(ii), (b)(iii), (b)(iv), (b)(v), (b)(ix), (b)(x), (b)(xi) and (b)(xii) below to the extent deducted in the calculation of such Consolidated Net Income, but without duplication:

(i) any provision for income taxes;

(ii) Interest Expense;

(iii) depreciation expense;

(iv) amortization of intangibles or financing or acquisition costs;

(v) any aggregate net loss from the sale, exchange or other disposition of business units by the Borrower or its Restricted Subsidiaries out of the ordinary course of business;

(vi) for the Fiscal Quarter ended December 31, 2012, $20,655,000.00;

(vii) for the Fiscal Quarter ended March 31, 2013, $14,965,000.00;

(viii) for the Fiscal Quarter ended June 30, 2013, $94,055,000.00;

(ix) for the Fiscal Quarter ending September 30, 2013, the lesser of (A) the Atlantic Restructuring Cash Charges for such Fiscal Quarter and (B) the Atlantic Restructuring Cash Charges Limit for such Fiscal Quarter;

(x) for the Fiscal Quarter ending December 31, 2013, the lesser of (A) the Atlantic Restructuring Cash Charges for such Fiscal Quarter and (B) the Atlantic Restructuring Cash Charges Limit for such Fiscal Quarter;

(xi) for the Fiscal Quarter ending March 31, 2014, the lesser of (A) the Atlantic Restructuring Cash Charges for such Fiscal Quarter and (B) the Atlantic Restructuring Cash Charges Limit for such Fiscal Quarter; and

(xii) all other non-cash charges (including impairment of intangible assets and goodwill) and non-cash losses for such period;

provided, that, to the extent that all or any portion of the income or gains of any Person is deducted pursuant to any of clauses (c)(iv) and (c)(v) below for a given period, any amounts set forth in any of the preceding clauses (b)(i), (b)(ii), (b)(iii), (b)(iv), (b)(v), (b)(ix), (b)(x), (b)(xi) and (b)(xii) that are attributable to such Person shall not be included for purposes of this clause (b) for such period, minus

(c) the sum of, in each case to the extent included in the calculation of such Consolidated Net Income but without duplication:

(i) any credit for income tax;

(ii) non-cash interest income;

(iii) any other non-cash gains which have been added in determining Consolidated Net Income (other than any such gain or other item that has been deducted in determining EBITDA for a prior period);

(iv) the income of any Restricted Subsidiary that is not a Guarantor to the extent that the declaration or payment of dividends or similar distributions or transfers or loans by such Restricted Subsidiary of that income is not at the time permitted by operation of the terms of its charter or any agreement, instrument, judgment, decree, statute, rule or governmental regulation applicable to such Restricted Subsidiary;

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(v) the income of any Person (other than a Restricted Subsidiary) in which any other Person (other than the Borrower or a Wholly-Owned Restricted Subsidiary or any director holding qualifying shares in accordance with applicable law) has an interest, except to the extent of the amount of dividends or other distributions or transfers or loans actually paid to the Borrower or a Wholly-Owned Restricted Subsidiary by such Person during such period;

(vi) any aggregate net gains from the sale, exchange or other disposition of business units by the Borrower or its Restricted Subsidiaries out of the ordinary course of business; and

(vii) cash payments during each period not deducted in the determination of Consolidated Net Income on account of non-cash charges and non-cash losses taken in a prior period.

EBITDA for a consecutive four-quarter period shall be calculated after giving effect, on a pro forma basis, to Acquisitions made by the Borrower or its Restricted Subsidiaries during such period and the sale, exchange or other disposition of business units by the Borrower or its Restricted Subsidiaries out of the ordinary course of business during such period (and subsequent to such period and on or before the date of incurrence of the Indebtedness giving rise to the need to calculate the Leverage Ratio or the Senior Secured Leverage Ratio) as if such Acquisitions or sale, exchange or other disposition occurred on the first day of the period so long as the Borrower provides to the Administrative Agent reconciliations and other detailed information relating to adjustments to the relevant financial statements (including copies of financial statements of the Person or assets acquired in such Acquisition) used in computing EBITDA (and the relevant elements thereof) sufficient to demonstrate such pro forma calculations in reasonable detail.

(v) amending clause (f) of the definition of “Permitted Acquisition” to read as follows:

(f) at the time of such Permitted Acquisition and after giving effect thereto (and to any Indebtedness incurred or acquired in connection therewith), (i) no Default or Event of Default shall have occurred and be continuing, the Borrower shall have demonstrated compliance with Section 5.2 (Minimum Interest Coverage Ratio) on a pro forma basis as of the most recent Fiscal Quarter end for which Financial Statements are available, and the Borrower shall have demonstrated compliance with Section 5.1 (Maximum Leverage Ratio) on a pro forma basis as of the most recent Fiscal Quarter end for which Financial Statements are available as if such maximum Leverage Ratio and Senior Secured Leverage Ratio were each 0.25:1.00 more restrictive than as set forth in Section 5.1 and (ii) the statement set forth in Section 3.2(b)(i) (Representations and Warranties; No Defaults) shall be true.

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(b) Section 5.1 of the Credit Agreement is hereby amended to read as follows:

Section 5.1. Maximum Leverage Ratio

(a) The Borrower shall not permit the Leverage Ratio, as determined as of the last day of each Fiscal Quarter, for the four Fiscal Quarters ending on such day, to be more than (i) for the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014, 3.75:1.00 unless the Borrower has issued the Senior Notes, in which case this Section 5.1(a)(i) shall not be applicable from and after the date the Senior Notes have been issued, and (ii) for each Fiscal Quarter ending on or after June 30, 2014, 3.00:1.00.

(b) If the Borrower has issued the Senior Notes, the Borrower shall not permit (i) the Senior Secured Leverage Ratio, as determined as of the last day of the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014, for the four Fiscal Quarters ending on such day, to be more than 2.00:1.00 or (ii) the Leverage Ratio, as determined as of the last day of the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014, for the four Fiscal Quarters ending on such day, to be more than 5.00:1.00; provided that this Section 5.1(b)(ii) shall not apply to any Fiscal Quarter ending prior to the Borrower’s issuance of the Senior Notes.

(c) Section 6.1(c) of the Credit Agreement is hereby amended to read as follows:

(c) Compliance Certificate. Together with each delivery of any financial statement pursuant to clause (a) or (b) above, a certificate of a Responsible Officer of the Borrower substantially in the form of Exhibit H (each, a “Compliance Certificate”) (i) showing in reasonable detail the calculations used in determining the Leverage Ratio and Senior Secured Leverage Ratio and demonstrating compliance with each of the other financial covenants contained in Article V (Financial Covenants), (ii) identifying any Asset Sale permitted by clauses (h), (i), or (j) of Section 8.4 during the Fiscal Quarter as to which such Compliance Certificate relates (or, in the case of any Compliance Certificate delivered in connection with the financial statements delivered pursuant to clause (b) above, in the last Fiscal Quarter of such Fiscal Year to which such Compliance Certificate relates) and identifying the aggregate consideration received in connection with each such identified Asset Sale if the aggregate consideration received for such Asset Sale exceeds $2,500,000.00 and (iii) stating that no Default or Event of Default has occurred and is continuing or, if a Default or an Event of Default has occurred and is continuing, stating the nature thereof and the action which the Borrower has taken or proposes to take with respect thereto.

(d) Section 8.1(g) of the Credit Agreement is hereby amended to read as follows:

(g) unsecured Indebtedness of the Borrower and its Restricted Subsidiaries, so long as immediately after giving effect to the issuance, incurrence or assumption of any such unsecured Indebtedness, except during the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014, the Leverage Ratio for the most recent four-quarter period for which financial statements are available, calculated on a pro forma basis, does not exceed 2.75:1.00;

(e) Exhibit H to the Credit Agreement is hereby replaced with Exhibit A hereto.

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Section 3. Borrower Representations and Warranties. The Borrower represents and warrants that:

(a) both before and after giving effect to this Amendment and any Loan or Issuance on the Amendment No. 3 Effective Date, the representations and warranties set forth in Article IV of the Credit Agreement and in the other Loan Documents that have no materiality or Material Adverse Effect qualification are true and correct in all material respects and the representations and warranties set forth in Article IV of the Credit Agreement and in the other Loan Documents that have a materiality or Material Adverse Effect qualification are true and correct in all respects, in each case with the same effect as though made on and as of the Amendment No. 3 Effective Date or, to the extent such representations and warranties expressly relate to an earlier date, as of such earlier date;

(b) both before and after giving effect to this Amendment and any Loan or Issuance on the Amendment No. 3 Effective Date, no Default or Event of Default has occurred and is continuing;

(c) the execution, delivery and performance of this Amendment are within the corporate or other organizational power and authority of the Borrower and each Guarantor and have been duly authorized by appropriate organizational and governing action and proceedings;

(d) the execution, delivery and performance by the Borrower and each Guarantor of this Amendment does not and will not (i) violate (A) any provision of any law, statute, rule or regulation, or of the certificate or articles of incorporation or partnership agreement, other constitutive documents or by-laws of the Borrower or any such Guarantor or (B) any applicable order of any court or any rule, regulation or order of any Governmental Authority, (ii) be in conflict with, result in a breach of or constitute (alone or with notice or lapse of time or both) a default under any Contractual Obligation of the Borrower or any Guarantor, where any such conflict, violation, breach or default referred to in clause (i) or (ii) of this clause (d), individually or in the aggregate could reasonably be expected to have a Material Adverse Effect, (iii) except as permitted under the Credit Agreement (as amended by this Amendment), result in or require the creation or imposition of any Lien upon any of the properties or assets of the Borrower or any such Guarantor (other than any Liens created under any of the Loan Documents in favor of the Collateral Agent on behalf of the Secured Parties), or (iv) require any approval of stockholders or partners or any approval or consent of any Person under any Contractual Obligation of the Borrower or any Guarantor except for such approvals or consents which have been obtained and except for any such approvals or consents the failure of which to obtain will not have a Material Adverse Effect;

(e) the person who is executing this Amendment on behalf of the Borrower and each Guarantor has the full power, authority and legal right to do so, and this Amendment has been duly executed by such person and delivered to the Administrative Agent; and

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(f) this Amendment constitutes the legal, valid, and binding obligation of the Borrower enforceable in accordance with its terms, except as limited by applicable bankruptcy, insolvency, reorganization, moratorium, or similar laws affecting the rights of creditors generally and general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law).

Section 4. Conditions to Effectiveness. This Amendment shall become effective on the Amendment No. 3 Effective Date and enforceable against the Borrower, the Guarantors, the Lenders, the Administrative Agent and the Issuers upon:

(a) receipt by the Administrative Agent of this Amendment executed by the Borrower, each Guarantor, the Administrative Agent and the Requisite Lenders;

(b) receipt by the Administrative Agent, for the account of each Lender that has returned an executed signature page hereto to the Administrative Agent on or prior to 5:00 p.m., New York time, on August 2, 2013 (the “Consent Deadline” and each such Lender, a “Consenting Lender”) an amendment fee equal to 0.20% multiplied by the sum of each such Consenting Lender’s Revolving Commitment as of the Consent Deadline;

(c) receipt by the Administrative Agent of the fees payable under the Fee Letter dated as of July 25, 2013 among Borrower, Crédit Agricole Corporate and Investment Bank and Merrill Lynch, Pierce, Fenner & Smith Incorporated;

(d) payment by the Borrower of the reasonable fees and expenses of counsel to the Administrative Agent in connection with this Amendment and the Loan Documents, to the extent that the Borrower receives invoices therefor at least one Business Day prior to the Amendment No. 3 Effective Date; and

(e) receipt by the Administrative Agent of such other approvals or documents as the Administrative Agent may reasonably request.

Section 5. Reaffirmation of Credit Support.

(a) Each of the Borrower and each Guarantor (collectively, the “Credit Support Parties”) has read this Amendment and consents to the terms hereof and further hereby confirms and agrees that, notwithstanding the effectiveness of this Amendment, the obligations of such Credit Support Party under, and the Liens granted by such Credit Support Party as collateral security for the Indebtedness, obligations and liabilities evidenced by the Credit Agreement and the other Loan Documents pursuant to, each of the Loan Documents to which such Credit Support Party is a party shall not be impaired and each of the Loan Documents to which such Credit Support Party is a party is, and shall continue to be, in full force and effect and are hereby confirmed and ratified in all respects.

(b) Each Credit Support Party (other than the Borrower) acknowledges and agrees that (i) notwithstanding the conditions to effectiveness set forth in this Amendment, such Credit Support Party is not required by the terms of the Credit Agreement or any other Loan Document to consent to the amendments to the Credit Agreement effected pursuant to this Amendment and (ii) nothing in the Credit Agreement, this Amendment or any other Loan Document shall be deemed to require the consent of such Credit Support Party to any future amendments to the Credit Agreement.

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Section 6. Acknowledgments and Agreements.

(a) The Borrower acknowledges that on and as of the Amendment No. 3 Effective Date all Obligations are payable without defense, offset, counterclaim or recoupment. Each of the Borrower, the Administrative Agent, each Issuer party hereto and each Lender party hereto does hereby adopt, ratify, and confirm the Credit Agreement, as amended hereby, and acknowledges and agrees that the Credit Agreement, as amended hereby, is and remains in full force and effect, and the Borrower acknowledges and agrees that its liabilities and obligations under the Credit Agreement, as amended hereby, are not impaired in any respect by this Amendment.

(b) From and after the Amendment No. 3 Effective Date, all references to the Credit Agreement shall mean the Credit Agreement as amended hereby. This Amendment is a Loan Document for the purposes of the provisions of the other Loan Documents. Without limiting the foregoing, any breach of representations, warranties, and covenants under this Amendment shall be a Default or Event of Default, as applicable, under the Credit Agreement.

Section 7. Miscellaneous.

(a) Except as specifically modified by this Amendment, the Credit Agreement and the other Loan Documents shall remain in full force and effect and are hereby ratified and confirmed.

(b) Except as specifically provided by this Amendment, the execution, delivery and performance of this Amendment shall not constitute a waiver of any provision of, or operate as a waiver of any right, power or remedy of any Agent, Lender or Issuer under, the Credit Agreement or any of the other Loan Documents.

Section 8. Counterparts. This Amendment may be signed in any number of counterparts, each of which shall be an original and all of which, taken together, constitute a single instrument. Delivery of an executed counterpart of a signature page of this Amendment by facsimile or in electronic format (i.e., “pdf” or “tif”) shall be effective as delivery of a manually executed counterpart of this Agreement.

Section 9. Successors and Assigns. This Amendment shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns permitted pursuant to the Credit Agreement.

Section 10. Governing Law. This Amendment and the rights and obligations of the parties hereto shall be governed by, and construed and interpreted in accordance with, the law of the State of New York, without regard to its conflicts of laws provisions.

Section 11. Entire Agreement. THIS AMENDMENT AND THE CREDIT AGREEMENT AS AMENDED HEREBY, TOGETHER WITH ALL OF THE OTHER LOAN DOCUMENTS AND ALL CERTIFICATES AND DOCUMENTS DELIVERED

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HEREUNDER OR THEREUNDER, EMBODY THE ENTIRE AGREEMENT OF THE PARTIES AND SUPERSEDES ALL PRIOR AGREEMENTS AND UNDERSTANDINGS RELATING TO THE SUBJECT MATTER HEREOF. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

[Signature pages follow.]

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their respective officers thereunto duly authorized, as of the date first above written.

BORROWER:
MCDERMOTT INTERNATIONAL, INC.
By:	/s/ Steven D. Oldham
Name:	Steven D. Oldham
Title:	Vice President, Treasurer and Investor Relations

GUARANTORS:
J. RAY MCDERMOTT (LUXEMBOURG), S.AR.L.
J. RAY MCDERMOTT (NIGERIA) LIMITED
J. RAY MCDERMOTT INVESTMENTS B.V.
MCDERMOTT HOLDINGS (U.K.) LIMITED
MCDERMOTT INTERNATIONAL B.V.
MCDERMOTT INTERNATIONAL MARINE INVESTMENTS N.V.
MC DERMOTT OVERSEAS INVESTMENT CO. N.V.
MCDERMOTT SERVICOS OFFSHORE DO BRASIL LTDA.
PT. BAJA WAHANA INDONESIA
SINGAPORE HUANGDAO PTE. LTD.
VARSY INTERNATIONAL N.V.
By:	/s/ James P. Goodwin
Name:	James P. Goodwin
Title:	Authorized Officer

Signature Page to Amendment No. 3

GUARANTORS:
CHARTERING COMPANY (SINGAPORE) PTE. LTD.
DEEPSEA GROUP LIMITED
EASTERN MARINE SERVICES, INC.
GLOBAL ENERGY - MCDERMOTT LIMITED
HYDRO MARINE SERVICES, INC.
INTERNATIONAL VESSELS LTD.
J. RAY HOLDINGS, INC.
J. RAY MCDERMOTT (AUST.) HOLDING PTY. LIMITED
J. RAY MCDERMOTT (CASPIAN), INC.
J. RAY MCDERMOTT (QINGDAO) PTE. LTD.
J. RAY MCDERMOTT CANADA HOLDING, LTD.
J. RAY MCDERMOTT CANADA, LTD.
J. RAY MCDERMOTT CONTRACTORS, INC.
J. RAY MCDERMOTT DE MEXICO, S.A. DE C.V.
J. RAY MCDERMOTT ENGINEERING SERVICES PRIVATE LIMITED
J. RAY MCDERMOTT FAR EAST INC.
J. RAY MCDERMOTT INTERNATIONAL VESSELS, LTD.
J. RAY MCDERMOTT INTERNATIONAL, INC.
J. RAY MCDERMOTT KAZAKHSTAN LIMITED LIABILITY PARTNERSHIP
J. RAY MCDERMOTT LOGISTIC SERVICES PVT. LIMITED
J. RAY MCDERMOTT SOLUTIONS, INC.
J. RAY MCDERMOTT TECHNOLOGY, INC.
J. RAY MCDERMOTT UNDERWATER SERVICES, INC.
J. RAY MCDERMOTT WEST AFRICA HOLDINGS, INC.
By:	/s/ Steven D. Oldham
Name:	Steven D. Oldham
Title:	Treasurer

Signature Page to Amendment No. 3

GUARANTORS:
J. RAY MCDERMOTT WEST AFRICA, INC.
MALMAC SDN. BHD.
MCDERMOTT ASIA PACIFIC PTE. LTD.
MCDERMOTT AUSTRALIA PTY. LTD.
MCDERMOTT CASPIAN CONTRACTORS, INC.
MCDERMOTT EASTERN HEMISPHERE, LTD.
MCDERMOTT ENGINEERING, LLC
MCDERMOTT FAR EAST, INC.
MCDERMOTT GULF OPERATING COMPANY, INC.
MCDERMOTT INTERNATIONAL INVESTMENTS CO., INC.
MCDERMOTT INTERNATIONAL TRADING CO., INC.
MCDERMOTT INTERNATIONAL VESSELS, INC.
MCDERMOTT MARINE CONSTRUCTION LIMITED
MCDERMOTT MARINE MEXICO, S.A. DE C.V.
MCDERMOTT MIDDLE EAST, INC.
MCDERMOTT OFFSHORE SERVICES COMPANY, INC.
MCDERMOTT OLD JV OFFICE, INC.
MCDERMOTT OVERSEAS, INC.
MCDERMOTT SUBSEA ENGINEERING, INC.
MCDERMOTT TRADE CORPORATION
NORTH ATLANTIC VESSEL, INC.
OFFSHORE PIPELINES INTERNATIONAL, LTD.
OPI VESSELS, INC.
OPMI, LTD.
SABINE RIVER REALTY, INC.
SERVICIOS DE FABRICACION DE ALTAMIRA, S.A. DE C.V.
SERVICIOS PROFESIONALES DE ALTAMIRA, S.A. DE C.V.
SPARTEC, INC.
By:	/s/ Steven D. Oldham
Name:	Steven D. Oldham
Title:	Treasurer

Signature Page to Amendment No. 3

GUARANTORS:
J. RAY MCDERMOTT HOLDINGS, LLC
J. RAY MCDERMOTT, S.A.
MCDERMOTT CAYMAN LTD.
MCDERMOTT INVESTMENTS, LLC
MCDERMOTT, INC.
By:	/s/ Steven D. Oldham
Name:	Steven D. Oldham
Title:	Vice President, Treasurer
MCDERMOTT INTERNATIONAL MANAGEMENT, S. DE RL.
By:	/s/ Steven D. Oldham
Name:	Steven D. Oldham
Title:	Vice President, Treasurer and Investor Relations

Signature Page to Amendment No. 3

CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK, as Administrative Agent, Collateral Agent, Lender and Issuer
By:	/s/ Page Dillehunt
Name:	Page Dillehunt
Title:	Managing Director
By:	/s/ Michael D. Willis
Name:	Michael D. Willis
Title:	Managing Director

Signature Page to Amendment No. 3

BANK OF AMERICA, N.A., as Lender and Issuer
By:	/s/ Arthur Ng
Name:	Arthur Ng
Title:	Vice President

Signature Page to Amendment No. 3

WELLS FARGO BANK, N.A., as Lender and Issuer
By:	/s/ Robert Corder
Name:	Robert Corder
Title:	Director

Signature Page to Amendment No. 3

BNP PARIBAS, as Lender and Issuer
By:	/s/ Jamie Dillon
Name:	Jamie Dillon
Title:	Managing Director
By:	/s/ Joseph Mack
Name:	Joseph Mack
Title:	Vice President

Signature Page to Amendment No. 3

COMPASS BANK, as Lender and Issuer
By:	/s/ Randall Morrison
Name:	Randall Morrison
Title:	Executive Director

Signature Page to Amendment No. 3

JPMORGAN CHASE BANK, N.A., as Lender and Issuer
By:	/s/ Stephanie Balette
Name:	Stephanie Balette
Title:	Authorized Officer

Signature Page to Amendment No. 3

CITIBANK, N.A., as Lender and Issuer
By:	/s/ Peter Kardos
Name:	Peter Kardos
Title:	Vice President
By:
Name:
Title:

Signature Page to Amendment No. 3

THE BANK OF NOVA SCOTIA, as Lender
By:	/s/ John Frazell
Name:	John Frazell
Title:	Director

Signature Page to Amendment No. 3

NATIXIS, as Lender
By:	/s/ Stuart Murray
Name:	Stuart Murray
Title:	Managing Director
By:	/s/ Louis P. Laville, III
Name:	Louis P. Laville, III
Title:	Managing Director

Signature Page to Amendment No. 3

DNB BANK ASA, GRAND CAYMAN BRANCH, as Lender
By:	/s/ Thomas Tangen
Name:	Thomas Tangen
Title:	Senior Vice President Head of Corporate Banking
By:	/s/ Kristie Li
Name:	Kristie Li
Title:	First Vice President

Signature Page to Amendment No. 3

ABN AMRO BANK N.V., as Lender
By:	/s/ Rob Le Mair
Name:	Rob Le Mair
Title:	Director
By:	/s/ H. Veldman
Name:	H. Veldman
Title:	Senior Associate

Signature Page to Amendment No. 3

HSBC BANK USA, N.A., as Lender
By:	/s/ Koby West
Name:	Koby West
Title:	Vice President
By:	/s/ Ozen Ahmed
Name:	Ozen Ahmed
Title:	Assistant Vice President

Signature Page to Amendment No. 3

STANDARD CHARTERED BANK, as Lender
By:	/s/ Johanna Minaya
Name:	Johanna Minaya
Title:	Associate Director Capital Markets
By:	/s/ Robert K. Reddington
Name:	Robert K. Reddington
Title:	Credit Documentation Manager Credit Documentation Unit, WB Legal - Americas

Signature Page to Amendment No. 3

U.S. BANK NATIONAL ASSOCIATION, as Lender
By:	/s/ Robert C. Mayer, Jr.
Name:	Robert C. Mayer, Jr.
Title:	Vice President

Signature Page to Amendment No. 3

WHITNEY BANK, as Lender
By:	/s/ Audrey Schexnailder
Name:	Audrey Schexnailder
Title:	Vice President

Signature Page to Amendment No. 3

AMEGY BANK NATIONAL ASSOCIATION, as Lender
By:	/s/ James Day
Name:	James Day
Title:	Vice President

Signature Page to Amendment No. 3

CAPITAL ONE, N.A., as Lender
By:	/s/ Don Backer
Name:	Don Backer
Title:	SVP

Signature Page to Amendment No. 3

AUSTRALIA AND NEW ZEALAND BANKING GROUP LIMITED, as Lender
By:	/s/ Joshua Landau
Name:	Joshua Landau
Title:	Head of Financial Institutions - America

Signature Page to Amendment No. 3

UBS AG, STAMFORD BRANCH, as Lender
By:	/s/ Lana Gifas
Name:	Lana Gifas
Title:	Director
By:	/s/ Kenneth Chin
Name:	Kenneth Chin
Title:	Director

Signature Page to Amendment No. 3

EXHIBIT H

TO CREDIT AGREEMENT

FORM OF COMPLIANCE CERTIFICATE

[For Fiscal Quarter/Year Ended                      ] (“Calculation Period”)

This certificate dated as of             ,         201     is prepared pursuant to the Credit Agreement dated May 3, 2010 (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”; terms used herein and not otherwise defined herein having the meanings attributed thereto in the Credit Agreement) among J. Ray McDermott, S.A., a Panamanian corporation, McDermott International, Inc., a Panamanian corporation, the Lenders, the Issuers, Crédit Agricole Corporate and Investment Bank, as administrative agent for the Lenders and the Issuers and collateral agent for the Lenders and the Issuers.

The undersigned hereby certifies in his or her capacity as Chief Financial Officer of the Borrower and not in his or her individual capacity (a) that[, except as disclosed on Schedule      hereto¹,] during the Calculation Period, the Borrower and its Restricted Subsidiaries have not undertaken any Asset Sale permitted by Section 8.4(h), (i) or (j) of the Credit Agreement for which the consideration received exceeds $2,500,000.00, (b) that[, except as disclosed on Schedule      hereto²,] no Default or Event of Default has occurred and is continuing, (c) that set forth on Schedule      hereto are the calculations used in determining the Leverage Ratio [and Senior Secured Leverage Ratio], and (d) that as of the end of the Calculation Period, the following amounts and calculations were true and correct:

¹  This schedule should identify each Asset Sale during the Calculation Period permitted by Section 8.4(h), (i) or (j) of the Credit Agreement and the aggregate consideration received in connection with each such identified Asset Sale if the aggregate consideration received for such Asset Sale exceeds $2,500,000.00.

²  This schedule should identify the nature of any Default or Event of Default and the action which the Borrower has taken or proposes to take with respect thereto.

Exhibit H

1.	Section 5.1 - Maximum Leverage Ratio.
	(a) Leverage Ratio
	Maximum Leverage Ratio
	allowed under Section 5.1 of Credit Agreement	[3.75]3[5.00]4[3.00] 5:1.00
	Compliance	Yes        No
	(b) Senior Secured Leverage Ratio6
	Maximum Senior Secured Leverage Ratio	2.00:1.00
	Compliance	Yes        No
2.	Section 5.2 - Minimum Interest Coverage Ratio.
	(a) EBITDA for last four Fiscal Quarters
	(b) Cash Interest Expense for last four Fiscal Quarters
	Ratio of (a) to (b)
	Minimum Interest Coverage Ratio
	allowed under Section 5.2 of the Credit Agreement	4.00:1.00
	Compliance	Yes        No

³  To be used for the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014 if Borrower has not issued the Senior Notes.

⁴  To be used for the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014 if Borrower has issued the Senior Notes, but not prior to the Borrower’s issuance of the Senior Notes.

⁵  To be used for the Fiscal Quarters ending on or after June 30, 2014.

⁶  Only applicable for the Fiscal Quarters ending September 30, 2013, December 31, 2013 and March 31, 2014 if Borrower has issued the Senior Notes.

Exhibit H

IN WITNESS WHEREOF, I have hereto signed my name to this Compliance Certificate as of the date first above written.

MDERMOTT INTERNATIONAL, INC.

By:

Name:

Title:

Exhibit H

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Stephen M. Johnson, certify that:

1. I have reviewed this quarterly report on Form 10-Q of McDermott International, Inc. for the quarterly period ended June 30, 2013;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

August 5, 2013

/s/ Stephen M. Johnson

Stephen M. Johnson

Chairman of the Board of Directors, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

I, Perry L. Elders, certify that:

1. I have reviewed this quarterly report on Form 10-Q of McDermott International, Inc. for the quarterly period ended June 30, 2013;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

August 5, 2013

/s/ Perry L. Elders

Perry L. Elders

Senior Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

MCDERMOTT INTERNATIONAL, INC.

Certification Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), I, Stephen M. Johnson, Chairman of the Board of Directors, President and Chief Executive Officer of McDermott International, Inc., a Panamanian corporation (the “Company”), hereby certify, to my knowledge, that:

(1) the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 5, 2013

/s/ Stephen M. Johnson

Stephen M. Johnson

Chairman of the Board of Directors, President and Chief Executive Officer

EX-32.2

Exhibit 32.2

MCDERMOTT INTERNATIONAL, INC.

Certification Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), I, Perry L. Elders, Senior Vice President and Chief Financial Officer of McDermott International, Inc., a Panamanian corporation (the “Company”), hereby certify, to my knowledge, that:

(1) the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2013 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 5, 2013

/s/ Perry L. Elders

Perry L. Elders

Senior Vice President and Chief Financial Officer

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2013

Commitments And Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

NOTE 10—COMMITMENTS AND CONTINGENCIES

Litigation

The following discussion presents information relating to pending litigation discussed in Note 12—Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2012. There have been no material subsequent developments relating to these matters.

On or about August 23, 2004, a declaratory judgment action entitled Certain Underwriters at Lloyd’s London, et al. v. J. Ray McDermott, Inc. et al., was filed by certain underwriters at Lloyd’s, London and Threadneedle Insurance Company Limited (the “London Insurers”), in the 23rd Judicial District Court, Assumption Parish, Louisiana, against MII, J. Ray McDermott, Inc. (“JRMI”) and two insurer defendants, Travelers and INA, seeking a declaration that the London Insurers have no obligation to indemnify MII and JRMI for certain bodily injury claims, including claims for asbestos and welding rod fume personal injury which have been filed by claimants in various state courts. Additionally, Travelers filed a cross-claim requesting a declaration of non-coverage in approximately 20 underlying matters. This proceeding was stayed by the Court on January 3, 2005. We do not believe an adverse judgment or material losses in this matter are probable, and, accordingly, we have not accrued any amounts relating to this contingency. Although there is a possibility of an adverse judgment, the amount or potential range of loss is not estimable at this time. The insurer-plaintiffs in this matter commenced this proceeding in a purported attempt to obtain a determination of insurance coverage obligations for occupational exposure and/or environmental matters for which we have given notice that we could potentially seek coverage. Because estimating losses would require, for every matter, known and unknown, on a case-by-case basis, anticipating what impact on coverage a judgment would have and a determination of an otherwise expected insured value, damages cannot be reasonably estimated.

On December 16, 2005, a proceeding entitled Antoine, et al. vs. J. Ray McDermott, Inc., et al. (“Antoine Suit”), was filed in the 24th Judicial District Court, Jefferson Parish, Louisiana, by approximately 88 plaintiffs against approximately 215 defendants, including our subsidiaries formerly known as JRMI and Delta Hudson Engineering Corporation (“DHEC”), generally alleging injuries for exposure to asbestos, and unspecified chemicals, metals and noise while the plaintiffs were allegedly employed as Jones Act seamen. This case was dismissed by the Court on January 10, 2007, without prejudice to plaintiffs’ rights to refile their claims. On January 29, 2007, 21 plaintiffs from the dismissed Antoine Suit filed a matter entitled Boudreaux, et al. v. McDermott, Inc., et al. (the “Boudreaux Suit”), in the United States District Court for the Southern District of Texas, against JRMI and our subsidiary formerly known as McDermott Incorporated, and approximately 30 other employer defendants, alleging Jones Act seaman status and generally alleging exposure to welding fumes, solvents, dyes, industrial paints and noise. The Boudreaux Suit was transferred to the United States District Court for the Eastern District of Louisiana on May 2, 2007, which entered an order in September 2007 staying the matter until further order of the Court due to the bankruptcy filing of one of the co-defendants. Additionally, on January 29, 2007, another 43 plaintiffs from the dismissed Antoine Suit filed a matter entitled Antoine, et al. v. McDermott, Inc., et al. (the “New Antoine Suit”), in the 164th Judicial District Court for Harris County, Texas, against JRMI, our subsidiary formerly known as McDermott Incorporated and approximately 65 other employer defendants and 42 maritime products defendants, alleging Jones Act seaman status and generally alleging personal injuries for exposure to asbestos and noise. On April 27, 2007, the District Court entered an order staying all activity and deadlines in the New Antoine Suit, other than service of process and answer/appearance dates, until further order of the Court. The New Antoine Suit plaintiffs filed a motion to lift the stay on February 20, 2009, which is pending before the Texas District Court. The plaintiffs seek monetary damages in an unspecified amount in both the Boudreaux Suit and New Antoine Suit cases and attorneys’ fees in the New Antoine Suit. We cannot reasonably estimate the extent of a potential judgment against us, if any, and we intend to vigorously defend these suits.

Additionally, due to the nature of our business, we and our affiliates are, from time to time, involved in litigation or subject to disputes or claims related to our business activities, including, among other things:

• performance- or warranty-related matters under our customer and supplier contracts and other business arrangements; and

• workers’ compensation claims, Jones Act claims, occupational hazard claims, including asbestos-exposure claims, premises liability claims and other claims.

Based upon our prior experience, we do not expect that any of these other litigation proceedings, disputes and claims will have a material adverse effect on our consolidated financial condition, results of operations or cash flows; however, because of the inherent uncertainty of litigation and, in some cases, the availability and amount of potentially applicable insurance, we can provide no assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material effect on our consolidated financial condition, results of operations or cash flows for the fiscal period in which that resolution occurs.

Environmental Matters

We have been identified as a potentially responsible party at various cleanup sites under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended (“CERCLA”). CERCLA and other environmental laws can impose liability for the entire cost of cleanup on any of the potentially responsible parties, regardless of fault or the lawfulness of the original conduct. Generally, however, where there are multiple responsible parties, a final allocation of costs is made based on the amount and type of wastes disposed of by each party and the number of financially viable parties, although this may not be the case with respect to any particular site. We have not been determined to be a major contributor of wastes to any of these sites. On the basis of our relative contribution of waste to each site, we expect our share of the ultimate liability for the various sites will not have a material adverse effect on our consolidated financial condition, results of operations or cash flows in any given year.

At June 30, 2013 we had total environmental reserves of $0.6 million, all of which was included in current liabilities. Inherent in the estimates of those reserves and recoveries are our expectations regarding the levels of contamination, remediation costs and recoverability from other parties, which may vary significantly as remediation activities progress. Accordingly, changes in estimates could result in material adjustments to our operating results, and the ultimate loss may differ materially from the amounts we have provided for in our consolidated financial statements.

Contracts Containing Liquidated Damages Provisions

Some of our contracts contain provisions that require us to pay liquidated damages if we are responsible for the failure to meet specified contractual milestone dates and the applicable customer asserts a claim under these provisions. These contracts define the conditions under which our customers may make claims against us for liquidated damages. In many cases in which we have historically had potential exposure for liquidated damages, such damages ultimately were not asserted by our customers. As of June 30, 2013, it is possible that we may incur liabilities for liquidated damages aggregating approximately $153.8 million, of which approximately $24.0 million has been recorded in our financial statements, based on our actual or projected failure to meet certain specified contractual milestone dates. The dates for which these potential liquidated damages could arise extend to November 2013. We believe we will be successful in obtaining schedule extensions or other customer-agreed changes that should resolve the potential for additional liquidated damages. Accordingly, we believe that no amounts for these potential liquidated damages in excess of the amounts currently reflected in our financial statements are probable of being paid by us. However, we may not achieve relief on some or all of the issues.

Contractual Obligations

At June 30, 2013, we had outstanding obligations related to our new vessel construction contracts on the LV 108 and DLV 2000 of $418.6 million in the aggregate, with $98.0 million, $124.5 million and $196.1 million due in the years ending December 31, 2013, 2014 and 2015, respectively.

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Information about Segment Assets by Country (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total assets	$ 3,195,947	$ 3,333,627
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Assets, continuing operations	1,176,446	1,402,923
Operating Segments | Atlantic
Segment Reporting Information [Line Items]
Assets, continuing operations	561,633	536,734
Operating Segments | Middle East Project
Segment Reporting Information [Line Items]
Assets, continuing operations	1,262,792	1,006,284
Operating Segments | Corporate and Other
Segment Reporting Information [Line Items]
Assets, continuing operations	$ 195,076	$ 387,686

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 427,711	$ 640,147
Restricted cash and cash equivalents	24,486	18,116
Accounts receivable-trade, net	318,725	428,800
Accounts receivable-other	65,627	75,461
Contracts in progress	623,930	560,154
Deferred income taxes	7,722	9,765
Assets held for sale	1,396	2,679
Other current assets	39,716	54,667
Total Current Assets	1,509,313	1,789,789
Property, Plant and Equipment	2,231,319	2,115,176
Less accumulated depreciation	(845,362)	(833,385)
Net Property, Plant and Equipment	1,385,957	1,281,791
Investments	21,044	26,750
Goodwill	41,202	41,202
Investments in Unconsolidated Affiliates	28,675	37,435
Assets Held for Sale	12,243	26,758
Other Assets	197,513	129,902
Total Assets	3,195,947	3,333,627
Current Liabilities:
Notes payable and current maturities of long-term debt	42,531	14,146
Accounts payable	434,783	400,007
Accrued liabilities	328,168	369,418
Advance billings on contracts	301,426	241,696
Deferred income taxes	15,526	10,758
Income taxes payable	37,112	76,986
Total Current Liabilities	1,159,546	1,113,011
Long-Term Debt	53,104	88,562
Self-Insurance	25,413	22,641
Pension Liability	24,350	25,069
Other Liabilities	167,635	132,239
Commitments and Contingencies
Stockholders' Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 243,928,572 and 243,442,156 shares at June 30, 2013 and December 31, 2012, respectively	243,929	243,442
Capital in excess of par value	1,400,386	1,391,271
Retained earnings	316,886	445,756
Treasury stock, at cost, 7,364,866 and 7,574,903 shares at June 30, 2013 and December 31, 2012, respectively	(99,184)	(98,725)
Accumulated other comprehensive loss	(156,673)	(94,413)
Stockholders' Equity-McDermott International, Inc.	1,705,344	1,887,331
Noncontrolling Interests	60,555	64,774
Total Equity	1,765,899	1,952,105
Total Liabilities and Equity	$ 3,195,947	$ 3,333,627

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LONG-TERM DEBT AND NOTES PAYABLE

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

LONG-TERM DEBT AND NOTES PAYABLE

NOTE 3—LONG-TERM DEBT AND NOTES PAYABLE

Credit Facility

In May 2010, we entered into a credit agreement with a syndicate of lenders and letter of credit issuers (as amended in August 2011, March 2013 and August 2013, the “Credit Agreement”). The Credit Agreement provides for revolving credit borrowings and issuances of letters of credit in an aggregate outstanding amount of up to $950.0 million and is scheduled to mature on August 19, 2016. Proceeds from borrowings under the Credit Agreement are available for working capital needs and other general corporate purposes. The Credit Agreement includes procedures for additional financial institutions to become lenders, or for any existing lender to increase its commitment thereunder.

In August 2013, we amended the Credit Agreement to, among other things: (1) add certain amounts to EBITDA (as defined in the Credit Agreement) for the fiscal quarters ended December 31, 2012, March 31, 2013 and June 30, 2013; (2) permit us to add to EBITDA certain cash expenses related to the Atlantic segment restructuring for the quarters ending September 30, 2013, December 31, 2013 and March 31, 2014; and (3) increase the maximum permitted leverage ratio of total indebtedness to EBITDA from 3.00:1.00 to 3.75:1.00 for the quarters ending September 30, 2013, December 31, 2013 and March 31, 2014. The August amendment to the Credit Agreement also provides that if we issue senior unsecured notes with a principal amount of at least $300 million, from the date of such issuance until March 31, 2014, the maximum permitted leverage ratio will increase from 3.75:1.00 to 5.00:1.00 and we will have to comply with a maximum permitted secured leverage ratio of total secured indebtedness to EBITDA of 2.00:1.00. The maximum leverage ratio and the minimum interest coverage ratio as defined in the Credit Agreement may differ in the method of calculation from similarly titled measures used by other companies or in other agreements. The Credit Agreement also contains covenants that restrict, among other things, debt incurrence, liens, investments, acquisitions, asset dispositions, dividends, prepayments of subordinated debt, mergers and capital expenditures.

Other than customary mandatory prepayments in connection with casualty events, the Credit Agreement requires only interest payments on a quarterly basis until maturity. We may prepay all loans under the Credit Agreement at any time without premium or penalty (other than customary LIBOR breakage costs), subject to certain notice requirements.

Our overall borrowing capacity is in large part dependent on maintaining compliance with covenants under the Credit Agreement by generating sufficient income from operations. At June 30, 2013, we were in compliance with our covenant requirements. A comparison of the key financial covenants and compliance (prior to the amendment to the Credit Agreement effected in August 2013) is as follows:

	Required		Actual
Maximum leverage ratio		3.00		0.92
Minimum interest coverage ratio		4.00		17.19

Loans outstanding under the Credit Agreement bear interest at the borrower’s option at either the Eurodollar rate plus a margin ranging from 1.50% to 2.50% per year or the base rate (the highest of the Federal Funds rate plus 0.50%, the 30-day Eurodollar rate plus 1.0%, or the administrative agent’s prime rate) plus a margin ranging from 0.50% to 1.50% per year. The applicable margin for revolving loans varies depending on the credit ratings of the Credit Agreement. We are charged a commitment fee on the unused portions of the Credit Agreement, and that fee varies between 0.200% and 0.450% per year depending on the credit ratings of the Credit Agreement. Additionally, we are charged a letter of credit fee of between 1.50% and 2.50% per year with respect to the amount of each financial letter of credit issued under the Credit Agreement and a letter of credit fee of between 0.75% and 1.25% per year with respect to the amount of each performance letter of credit issued under the Credit Agreement, in each case depending on the credit ratings of the Credit Agreement. Under the Credit Agreement, we also pay customary issuance fees and other fees and expenses in connection with the issuance of letters of credit under the Credit Agreement. In connection with entering into the Credit Agreement and certain amendments to the Credit Agreement, we paid certain fees to the lenders thereunder, and certain arrangement and other fees to the arrangers and agents for the Credit Agreement, which are being amortized to interest expense over the term of the Credit Agreement.

At June 30, 2013, there were no borrowings outstanding, and letters of credit issued under the Credit Agreement totaled $265.8 million. At June 30, 2013, there was $684.2 million available for borrowings or to meet letter of credit requirements under the Credit Agreement. There were no borrowings under the Credit Agreement during the quarter ended June 30, 2013. Had there been any such borrowings at June 30, 2013, the applicable base interest rate would have been approximately 4.0% per annum. In addition, we had $116.4 million in outstanding unsecured bilateral letters of credit at June 30, 2013.

At June 30, 2013, based on the credit ratings applicable to the Credit Agreement, the applicable margin for Eurodollar-rate loans was 1.75%, the applicable margin for base-rate loans was 0.75%, the letter of credit fee for financial letters of credit was 1.75%, the letter of credit fee for performance letters of credit was 0.875%, and the commitment fee for unused portions of the Credit Agreement was 0.25%. The Credit Agreement does not have a floor for the base rate or the Eurodollar rate.

North Ocean Financing

North Ocean 102

In December 2009, J. Ray McDermott, S.A. (“JRMSA”), a wholly owned subsidiary of MII, entered into a vessel-owning joint venture transaction with Oceanteam ASA. As a result of this transaction, we had consolidated notes payable of $34.4 million and $37.3 million on our condensed consolidated balance sheets at June 30, 2013 and December 31, 2012, respectively, of which $34.4 million and $6.0 million was classified as current notes payable at June 30, 2013 and December 31, 2012, respectively. JRMSA has guaranteed approximately 50% of this debt based on its ownership percentages in the vessel-owning companies. The outstanding debt bears interest at a rate equal to the three-month LIBOR (which resets every three months) plus a margin of 3.315% and matures in January 2014.

North Ocean 105

On September 30, 2010, MII, as guarantor, and North Ocean 105 AS, in which we have a 75% ownership interest, as borrower, entered into a financing agreement to finance a portion of the construction costs of the North Ocean 105. The agreement provides for borrowings of up to $69.4 million, bearing interest at 2.76% per year, and requires principal repayment in 17 consecutive semi-annual installments, which commenced on October 1, 2012. Borrowings under the agreement are secured by, among other things, a pledge of all of the equity of North Ocean 105 AS, a mortgage on the North Ocean 105, and a lien on substantially all of the other assets of North Ocean 105 AS. MII unconditionally guaranteed all amounts to be borrowed under the agreement. There was $61.3 million and $65.4 million in borrowings outstanding under this agreement on our balance sheets at June 30, 2013 and December 31, 2012, respectively, of which $8.2 million was classified as current notes payable at June 30, 2013 and December 31, 2012.

ANZ Reimbursement Agreement

On April 20, 2012, McDermott and one of its wholly owned subsidiaries, McDermott Australia Pty. Ltd. (“McDermott Australia”), entered into a secured Letter of Credit Reimbursement Agreement (the “Reimbursement Agreement”) with Australia and New Zealand Banking Group Limited (“ANZ”). In accordance with the terms of the Reimbursement Agreement, ANZ issued letters of credit in the aggregate amount of approximately $109.0 million to support McDermott Australia’s performance obligations under contractual arrangements relating to a field development project. The obligations of McDermott and McDermott Australia under the Reimbursement Agreement are secured by McDermott Australia’s interest in the contractual arrangements and certain related assets.

Surety Bonds

In 2012 and 2007, JRMSA executed general agreements of indemnity in favor of surety underwriters based in Mexico relating to surety bonds issued in support of contracting activities of J. Ray McDermott de Mèxico, S.A. de C.V., a subsidiary of JRMSA. As of June 30, 2013, the aggregate principal amount of bonds issued under these arrangements totaled $46.2 million.

Long-term debt and notes payable obligations

A summary of our long-term debt obligations are as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Long-term debt consists of:
North Ocean 102 Construction Financing	$	34,361	$	37,349
North Ocean 105 Construction Financing		61,274		65,359
		95,635		102,708
Less: Amounts due within one year		42,531		14,146
Total long-term debt	$	53,104	$	88,562

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

Available-For-Sale Securities Measured at Fair Value

The following is a summary of our available-for-sale securities measured at fair value:

	Total at June 30, 2013		Level 1		Level 2		Level 3
	(Unaudited)
	(In thousands)
Mutual funds(1)	$	2,058	$	—	$	2,058	$	—
Commercial paper		9,893		—		9,893		—
Asset-backed securities and collateralized mortgage obligations(2)		8,092		—		2,190		5,902
Corporate notes and bonds(3)		1,001		—		1,001		—
Total	$	21,044	$	—	$	15,142	$	5,902

	Total at December 31, 2012		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	2,023	$	—	$	2,023	$	—
Commercial paper		29,737		—		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		—		2,134		6,343
Corporate notes and bonds		5,755		—		5,755		—
Total	$	45,992	$	—	$	39,649	$	6,343

(1) Various U.S. equities and other investments managed under mutual funds

(2) Asset-backed and mortgage-backed securities with maturities of up to 26 years

(3) Corporate notes and bonds with maturities of three years or less

Changes in Level Three Instrument Measured on Recurring Basis

The following is a summary of the changes in our Level 3 instrument measured on a recurring basis for the three months and six months ended June 30, 2013 and June 30, 2012:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,157		$	6,177		$	6,343		$	6,030
Total realized and unrealized gains		18			456			228			898
Principal repayments		(273	)		(295	)		(669	)		(590	)
Balance at end of period	$	5,902		$	6,338		$	5,902		$	6,338

Summary of Available for Sale Securities

The following is a summary of our available-for-sale securities:

	Twelve Months or Greater
	Fair Value		Unrealized Losses
	(Unaudited) (In thousands)
June 30, 2013
Mutual funds	$	2,058	$	—
Commercial paper		9,893		—
Asset-backed securities and collateralized mortgage obligations		8,092		(1,659	)
Corporate notes and bonds		1,001		—
Total	$	21,044	$	(1,659	)

	Twelve Months or Greater
	Fair Value		Unrealized Losses
	(Unaudited) (In thousands)
December 31, 2012
Mutual funds	$	2,023	$	—
Commercial paper		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		(2,376	)
Corporate notes and bonds		5,755		—
Total	$	45,992	$	(2,376	)

Estimated Fair Values of Financial Instruments

The estimated fair values of certain of our financial instruments are as follows:

	June 30, 2013						December 31, 2012
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	427,711		$	427,711		$	640,147		$	640,147
Restricted cash and cash equivalents	$	24,486		$	24,486		$	18,116		$	18,116
Investments	$	21,044		$	21,044		$	45,992		$	45,992
Debt	$	(95,635	)	$	(98,640	)	$	(102,708	)	$	(106,324	)
Forward contracts	$	(42,892	)	$	(42,892	)	$	21,434		$	21,434

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Nature of Operations

Nature of Operations

McDermott International, Inc. (“MII”), a corporation incorporated under the laws of the Republic of Panama in 1959, is a leading engineering, procurement, construction and installation (“EPCI”) company focused on designing and executing complex offshore oil and gas projects worldwide. Providing fully integrated EPCI services, we deliver fixed and floating production facilities, pipeline installations and subsea systems from concept to commissioning. We support these activities with comprehensive project management and procurement services, while utilizing our fully integrated capabilities in both shallow water and deepwater construction. Our customers include national, major integrated and other oil and gas companies, and we operate in most major offshore oil and gas producing regions throughout the world. In these notes to our unaudited condensed consolidated financial statements, unless the context otherwise indicates, “we,” “us” and “our” mean MII and its consolidated subsidiaries.

Basis of Presentation

Basis of Presentation

We have presented our unaudited condensed consolidated financial statements in U.S. Dollars, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) applicable to interim reporting. Financial information and disclosures normally included in our financial statements prepared annually in accordance with accounting principles generally accepted in the United States (“GAAP”) have been condensed or omitted. Readers of these financial statements should, therefore, refer to the consolidated financial statements and the accompanying notes in our annual report on Form 10-K for the year ended December 31, 2012.

We have included all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation. These condensed consolidated financial statements include the accounts of McDermott International, Inc., its consolidated subsidiaries and controlled entities. We use the equity method to account for investments in entities that we do not control, but over which we have significant influence. We generally refer to these entities as “unconsolidated affiliates” or “joint ventures.” We have eliminated all intercompany transactions and accounts.

During the quarter ended June 30, 2013, we commenced a restructuring of our Atlantic segment. See Note 2 for information relating to that restructuring. On March 19, 2012, we completed the sale of our former charter fleet business, which operated 10 of the 14 vessels acquired in our 2007 acquisition of substantially all of the assets of Secunda International Limited (the “Secunda Acquisition”). The condensed consolidated statements of income, comprehensive income, cash flows and equity reflect the historical operations of the charter fleet business as a discontinued operation through March 19, 2012. Accordingly, we have presented the notes to our condensed consolidated financial statements on the basis of continuing operations. In addition, certain 2012 amounts in the condensed consolidated balance sheet and statement of cash flows have been reclassified to conform to the 2013 presentation.

Business Segments

Business Segments

We operate in four primary operating segments, which consist of Asia Pacific, Atlantic, Caspian and the Middle East. The Caspian and Middle East operating segments are aggregated into the Middle East reporting segment due to the proximity of regions and similarities in the nature of services provided, economic characteristics and oversight responsibilities. Accordingly, we report financial results under reporting segments consisting of Asia Pacific, Atlantic and the Middle East. We also report certain corporate and other non-operating activities under the heading “Corporate and Other.” Corporate and Other primarily reflects corporate personnel and activities, incentive compensation programs and other costs, which are generally fully allocated to our operating segments. See Note 9 for summarized financial information on our segments.

Revenue Recognition

Revenue Recognition

We determine the appropriate accounting method for each of our long-term contracts before work on the project begins. We generally recognize contract revenues and related costs on a percentage-of-completion method for individual contracts or combinations of contracts based on work performed, man hours, or a cost-to-cost method, as applicable to the activity involved. We include the amount of accumulated contract costs and estimated earnings that exceed billings to customers in contracts in progress. We include billings to customers that exceed accumulated contract costs and estimated earnings in advance billings on contracts. Most long-term contracts contain provisions for progress payments. We expect to invoice customers and collect all unbilled revenues. Certain costs are generally excluded from the cost-to-cost method of measuring progress, such as significant procurement costs for materials and third-party subcontractors. Costs incurred prior to a project award are generally expensed during the period in which they are incurred. Total estimated project costs, and resulting income, are affected by changes in the expected cost of materials and labor, productivity, vessel costs, scheduling and other factors. Additionally, external factors such as weather, customer requirements and other factors outside of our control may affect the progress and estimated cost of a project’s completion and, therefore, the timing and amount of revenue and income recognition.

In addition, change orders, which are a normal and recurring part of our business, can increase (and sometimes substantially) the future scope and cost of a job. Therefore, change order awards (although frequently beneficial in the long term) can have the short-term effect of reducing the job percentage of completion and thus the revenues and profits recognized to date. We regularly review contract price and cost estimates as the work progresses and reflect adjustments in profit, proportionate to the job percentage of completion in the period when those estimates are revised. Revenue from unapproved change orders is generally recognized to the extent of the lesser of amounts management expects to recover or costs incurred. The total unapproved change orders included in our estimates at completion aggregated approximately $445 million, of which approximately $170 million was included in backlog at June 30, 2013. Unapproved change orders that are disputed by the customer are treated as claims.

Deferred Profit Recognition

For contracts as to which we are unable to estimate the final profitability due to their uncommon nature, including first-of-a-kind projects, we recognize equal amounts of revenue and cost until the final results can be estimated more precisely. For these contracts, we only recognize gross margin when reliably estimable and the level of uncertainty has been significantly reduced, which we generally determine to be when the contract is at least 70% complete. We treat long-term construction contracts that contain such a level of risk and uncertainty that estimation of the final outcome is impractical as deferred profit recognition contracts. If while being accounted for under our deferred profit recognition policy, a current estimate of total contract costs indicates a loss, the projected loss is recognized in full and the project is accounted for under our normal revenue recognition guidelines.

We currently account for an Atlantic segment project under our deferred profit recognition policy. This project was awarded to one of our joint ventures, and the Atlantic segment’s backlog includes a subcontract from that joint venture, of which $211.9 million relating to this project remains in backlog at June 30, 2013. This project contributed revenues and costs equally, totaling approximately $37.0 million and $7.9 million for the three-month periods ended June 30, 2013 and 2012, respectively, and approximately $42.1 million and $13.1 million for the six-month periods ended June 30, 2013 and 2012, respectively.

Completed Contract Method

Under the completed contract method, revenue and gross profit is recognized only when a contract is completed or substantially complete. We generally do not enter into fixed-price contracts without an estimate of cost to complete that we believe to be accurate. However, it is possible that in the time between contract award and the commencement of work on a project, we could lose the ability to adequately forecast costs to complete based on intervening events, including, but not limited to, experience on similar projects, civil unrest, strikes and volatility in our expected costs. In such a situation, we would use the completed contract method of accounting for that project. We currently do not have any contracts that we account for under the completed contract method.

Claims Revenue

Claims revenue may relate to various factors, including the procurement of materials, equipment performance failures, change order disputes or schedule disruptions and other delays, including those associated with weather conditions. Claims revenue, when recorded, is only recorded to the extent of the lesser of the amounts management expects to recover or the associated costs incurred in our consolidated financial statements. We include certain unapproved claims in the applicable contract values when we have a legal basis to do so, consider collection to be probable and believe we can reliably estimate the ultimate value. Amounts attributable to unapproved change orders are not included in claims. We continue to actively engage in negotiations with our customers on our outstanding claims. However, these claims may be resolved at amounts that differ from our current estimates, which could result in increases or decreases in future estimated contract profits or losses. Claims are generally negotiated over the course of the respective projects and many of our projects are long-term in nature. None of the claims at June 30, 2013 were involved in litigation.

The amount of revenues and costs included in our estimates at completion (i.e., contract values) associated with such claims was $173.4 million and $29.0 million as of June 30, 2013 and 2012, respectively. Approximately 44%, 10% and 46% of those claim amounts at June 30, 2013 were related to our Asia Pacific, Atlantic and Middle East segments, respectively. These amounts are determined based on various factors, including our analysis of the underlying contractual language and our experience in making and resolving claims. For the three months ended June 30, 2013 and 2012, $11.0 million and $29.0 million, respectively, of revenues and costs are included in our financial statements. For the six months ended June 30, 2013 and 2012, $39.4 million and $38.5 million, respectively, of revenues and costs are reflected in our financial statements pertaining to claims. Approximately 14%, 13% and 73% of those claim amounts are related to our Asia Pacific, Atlantic and Middle East segments, respectively.

Our unconsolidated joint ventures also included an aggregate of $3.7 million of claims revenue and costs in their financial results for the six months ended June 30, 2013, with no amounts recognized during the three months ended June 30, 2013. For the three months and six months ended June 30, 2012, our joint ventures included approximately $1.0 million and $5.0 million, respectively of claims revenue and costs in their financial results.

Loss Recognition

A risk associated with fixed-priced contracts is that revenue from customers may not cover increases in our costs. It is possible that current estimates could materially change for various reasons, including, but not limited to, fluctuations in forecasted labor and vessel productivity, vessel repair requirements, weather downtime, supplier performance, pipeline lay rates or steel and other raw material prices. Increases in costs associated with our fixed-priced contracts could have a material adverse impact on our consolidated financial condition, results of operations and cash flows. Alternatively, reductions in overall contract costs at completion could materially improve our consolidated financial condition, results of operations and cash flows.

As of June 30, 2013, we have provided for our estimated costs to complete on all of our ongoing contracts. However, it is possible that current estimates could change due to unforeseen events, which could result in adjustments to overall contract costs. Variations from estimated contract performance could result in material adjustments to operating results for any fiscal quarter or year. For all contracts, if a current estimate of total contract cost indicates a loss, the projected loss is recognized in full when determined.

We currently have three active projects in our backlog that are in loss positions at June 30, 2013, whereby future revenues are expected to equal costs when recognized. Included in these projects are a marine project in our Asia Pacific segment, which we began in 2012 and expect to complete by mid-2014, and a five-year charter in Brazil, which we began in early 2012 and we are conducting through our Atlantic segment. These two projects represent the majority of our contract value in a loss position.

Use of Estimates

Use of Estimates

We use estimates and assumptions to prepare our financial statements in conformity with GAAP. These estimates and assumptions affect the amounts we report in our financial statements and accompanying notes. Our actual results could differ from these estimates, and variances could materially affect our financial condition and results of operations in future periods. Changes in project estimates generally exclude change orders and changes in scope, but may include, without limitation, unexpected changes in weather conditions, productivity, unanticipated vessel repair requirements, customer and vendor delays and other costs. We generally expect to experience a variety of unanticipated events, and some of these events can result in significant cost increases above cost amounts we previously estimated. Variations from estimated contract performance could result in material adjustments to operating results.

The following is a discussion of our most significant changes in estimates, which impacted operating income in each of our segments for the three and six months ended June 30, 2013 and 2012.

Three months ended June 30, 2013

The Asia Pacific segment was primarily impacted by changes in estimates on one subsea project in Malaysia. On that project, we increased our estimated cost at completion by approximately $62.0 million in the three months ended June 30, 2013, primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime. In consideration of these factors, the expected completion date for the project was extended from the fourth quarter of 2013 to the middle of 2014.

The Middle East segment was impacted by changes in estimates on one of our EPCI projects in Saudi Arabia. On that project, we increased our estimated cost at completion by approximately $38.0 million in the three months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the three months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

The Atlantic segment was impacted by changes in estimates on two projects. On one of those projects, we recognized approximately $7.0 million of incremental project losses in the three months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. We also recognized project losses of approximately $3.0 million in the three months ended June 30, 2013 on a fabrication project in Morgan City, which was completed during the quarter ended June 30, 2013.

Six months ended June 30, 2013

The Asia Pacific segment was primarily impacted by changes in estimates on one project. On this project (the project in Malaysia described above), we increased our estimated cost at completion by approximately $66.0 million in the six months ended June 30, 2013, primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime.

The Middle East segment was impacted by changes in estimates on the EPCI project in Saudi Arabia discussed above. On that project, we increased our estimated cost at completion by approximately $43.0 million in the six months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the six months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

The Atlantic segment was impacted by changes in estimates on one project. On that project, we recognized approximately $14.0 million of incremental project losses in the six months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013.

2012 Periods

Operating income for each of the three-month and six-month periods ended June 30, 2012 was not significantly affected by changes in estimates.

Loss Contingencies

Loss Contingencies

We record liabilities for loss contingencies when it is probable that a liability has been incurred and the amount of loss is reasonably estimable. We provide disclosure when there is a reasonable possibility that the ultimate loss will exceed the recorded provision or if such loss is not reasonably estimable. We are currently involved in litigation and other proceedings, as discussed in Note 10. We have accrued our estimates of the probable losses associated with these matters, and associated legal costs are generally recognized in selling, general and administrative expenses as incurred. However, our losses are typically resolved over long periods of time and are often difficult to estimate due to various factors, including the possibility of multiple actions by third parties. Therefore, it is possible future earnings could be affected by changes in our estimates related to these matters.

Cash and Cash Equivalents

Cash and Cash Equivalents

Our cash and cash equivalents are highly liquid investments with maturities of three months or less when we purchase them. We record cash and cash equivalents as restricted when we are unable to freely use such cash and cash equivalents for our general operating purposes. At June 30, 2013, all of our restricted cash was held in restricted foreign-entity accounts.

Investments

Investments

We classify investments available for current operations as current assets in the accompanying balance sheets, and we classify investments held for long-term purposes as noncurrent assets. We adjust the amortized cost of debt securities for amortization of premiums and accretion of discounts to maturity. That amortization is included in interest income. We include realized gains and losses on our investments in other income (expense)—net. The cost of securities sold is based on the specific identification method. We include interest earned on securities in interest income.

Investments in Unconsolidated Affiliates

Investments in Unconsolidated Affiliates

We generally use the equity method of accounting for affiliates in which our investment ownership ranges from 20% to 50%. Currently, most of our significant investments in affiliates that are not consolidated are recorded using the equity method

Accounts Receivable

Accounts Receivable

Accounts Receivable—Trade, Net

A summary of contract receivables is as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	209,880		$	273,729
Completed contracts		61,450			38,858
Retainages		64,839			133,619
Unbilled		5,087			4,710
Less allowances		(22,531	)		(22,116	)
Accounts receivable—trade, net	$	318,725		$	428,800

We expect to invoice our unbilled receivables once certain milestones or other metrics are reached, and we expect to collect all unbilled amounts. We believe that our provision for losses on uncollectible accounts receivable is adequate for our credit loss exposure.

Contract retainages generally represent amounts withheld by our customers until project completion, in accordance with the terms of the applicable contracts. The following is a summary of retainages on our contracts:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	64,839	$	133,619
Retainages expected to be collected after one year		95,286		32,085
Total retainages	$	160,125	$	165,704

We have included in accounts receivable—trade, net, retainages expected to be collected within one year. Retainages expected to be collected after one year are included in other assets.

Accounts Receivable—Other

Accounts receivable—other was $65.6 million and $75.5 million at June 30, 2013 and December 31, 2012, respectively. The balance primarily relates to transactions with unconsolidated affiliates, receivables associated with our hedging activities and value-added tax. These amounts are expected to be collected within 12 months, and any allowance for doubtful accounts on our accounts receivable—other is based on our estimate of the amount of probable losses due to the inability to collect these amounts (based on historical collection experience and other available information). As of June 30, 2013 and December 31, 2012, no such allowance for doubtful accounts was recorded.

Contracts in Progress and Advance Billings on Contracts

Contracts in Progress and Advance Billings on Contracts

Contracts in progress was $623.9 million and $560.1 million at June 30, 2013 and December 31, 2012, respectively. Advance billings on contracts was $301.4 million and $241.7 million at June 30, 2013 and December 31, 2012, respectively. A detail of the components of contracts in progress and advance billings on contracts is as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Costs incurred less costs of revenue recognized	$	83,354	$	65,321
Revenues recognized less billings to customers		540,576		494,833
Contracts in Progress	$	623,930	$	560,154

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Billings to customers less revenue recognized	$	467,049		$	394,352
Costs incurred less costs of revenue recognized		(165,623	)		(152,656	)
Advance Billings on Contracts	$	301,426		$	241,696

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. An established hierarchy for inputs is used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect our assumptions about the factors that market participants would use in valuing the asset or liability.

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

• Level 1—inputs are based upon quoted prices for identical instruments traded in active markets.

• Level 2—inputs are based upon quoted prices for similar instruments in active markets, quoted prices for similar or identical instruments in inactive markets and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets and liabilities.

• Level 3—inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models and similar valuation techniques.

The carrying amounts that we have reported for financial instruments, including cash and cash equivalents, accounts receivables and accounts payable approximate their fair values. See Note 6 for additional information regarding fair value measurements.

Derivative Financial Instruments

Derivative Financial Instruments

Our worldwide operations give rise to exposure to changes in certain market conditions, which may adversely impact our financial performance. When we deem it appropriate, we use derivatives as a risk management tool to mitigate the potential impacts of certain market risks. The primary market risk we manage through the use of derivative instruments is movement in foreign currency exchange rates. We use foreign currency derivative contracts to reduce the impact of changes in foreign currency exchange rates on our operating results. We use these instruments to hedge our exposure associated with revenues and/or costs on our long-term contracts and other cash flow exposures that are denominated in currencies other than our operating entities’ functional currencies. We do not hold or issue financial instruments for trading or other speculative purposes.

In certain cases, contracts with our customers contain provisions under which some payments from our customers are denominated in U.S. Dollars and other payments are denominated in a foreign currency. In general, the payments denominated in a foreign currency are designed to compensate us for costs that we expect to incur in such foreign currency. In these cases, we may use derivative instruments to reduce the risks associated with foreign currency exchange rate fluctuations arising from differences in timing of our foreign currency cash inflows and outflows. See Note 5 for additional information regarding derivative financial instruments.

Foreign Currency Translation

Foreign Currency Translation

We translate assets and liabilities of our foreign operations, other than operations in highly inflationary economies, into U.S. Dollars at period-end exchange rates, and we translate income statement items at average exchange rates for the periods presented. We record adjustments resulting from the translation of foreign currency financial statements as a component of accumulated other comprehensive income (loss) (“AOCI”), net of tax.

Earnings per Share

Earnings per Share

We have computed earnings per common share on the basis of the weighted average number of common shares, and, where dilutive, common share equivalents, outstanding during the indicated periods. See Note 8 for our earnings per share computations.

Accumulated Other Comprehensive Loss

Accumulated Other Comprehensive Loss

The components of AOCI included in stockholders’ equity are as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,886	)	$	(3,366	)
Net loss on investments		(1,875	)		(2,316	)
Net gain (loss) on derivative financial instruments		(58,316	)		11,735
Unrecognized losses on benefit obligations		(93,596	)		(100,466	)
Accumulated other comprehensive loss	$	(156,673	)	$	(94,413	)

The following tables present the components of AOCI and the amounts that were reclassified during the period:

For the three months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, March 31, 2013	$	(1,915	)	$	(5,819	)	$	3,848		$	(96,811	)	$	(100,697	)
Other comprehensive income (loss)		40			(55,563	)		(6,734	)		—			(62,257	)
Amounts reclassified from AOCI		—			3,066	(3)		—			3,215	(4)		6,281
Net current period other comprehensive income (loss)		40			(52,497	)		(6,734	)		3,215			(55,976	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the three months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)
Other comprehensive income		431			(18,164	)		3,326			—			(14,407	)
Amounts reclassified from AOCI		—			1,107	(3)		—			2,681	(4)		3,788
Net current period other comprehensive income		431			(17,057	)		3,326			2,681			(10,619	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

For the six months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,316	)	$	11,735		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss)		441			(71,013	)		480			—			(70,092	)
Amounts reclassified from AOCI		—			962	(3)		—			6,870	(4)		7,832
Net current period other comprehensive income (loss)		441			(70,051	)		480			6,870			(62,260	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the six months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income		1,127			(24,051	)		6,439			—			(16,485	)
Amounts reclassified from AOCI		—			2,249	(3)		—			5,726	(4)		7,975
Net current period other comprehensive income		1,127			(21,802	)		6,439			5,726			(8,510	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

(1) Refer to Note 5 for additional details

(2) Refer to Note 4 for additional details

(3) Reclassified to cost of operations

(4) Reclassified to selling, general and administrative expenses

Impairment Review

Impairment Review

We review goodwill for impairment on an annual basis or more frequently if circumstances indicate that impairment may exist. The annual impairment review involves comparing the fair value to the net book value of each applicable reporting unit and, therefore, is significantly impacted by estimates and judgments.

We review our long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If an evaluation is required, the fair value of each applicable asset is compared to its carrying value. Factors that impact our determination of potential impairment include forecasted utilization of equipment and estimates of forecasted cash flows from projects expected to be performed in future periods. Our estimates of cash flow may differ from actual cash flow due to, among other things, technological changes, economic conditions or changes in operating performance. Any changes in such factors may negatively affect our business segments and result in future asset impairments.

Income Taxes

Income Taxes

We provide for income taxes based on the tax laws and rates in the countries in which we conduct our operations. MII is a Panamanian corporation that earns all of its income outside of Panama. As a result, we are not subject to income tax in Panama. We operate in various taxing jurisdictions around the world. Each of these jurisdictions has a regime of taxation that varies, not only with respect to nominal rates, but also with respect to the basis on which these rates are applied. These variations, along with changes in our mix of income or loss from these jurisdictions, may contribute to shifts, sometimes significant, in our effective tax rate.

Three months ended June 30, 2013

For the three months ended June 30, 2013, we recognized a loss before provision for income taxes of $140.2 million, compared to income of $82.3 million in the three months ended June 30, 2012. In the aggregate, the provision for income taxes was $5.9 million and $28.3 million for the three months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

Six months ended June 30, 2013

For the six months ended June 30, 2013, we recognized a loss before provision for income taxes of $88.6 million, compared to income of $172.9 million in the six months ended June 30, 2012. In the aggregate, the provision for income taxes was $33.2 million and $57.1 million for the six months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

At June 30, 2013, we had foreign net operating loss carryforwards available to offset future taxable income in foreign jurisdictions, with a valuation allowance of $69 million against $78 million of the related deferred taxes. The remaining $9 million of foreign deferred taxes is expected to be realized through future foreign taxable income. At June 30, 2013, we had U.S. federal net operating loss carryforwards but have fully reserved the $133 million deferred tax asset.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

On July 18, 2013, the Financial Accounting Standards Board (“FASB”) issued an update to the topic Income Taxes. The update clarifies that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward if such settlement is required or expected in the event the uncertain tax position is disallowed. In situations where these items are not available at the reporting date under the tax law of the applicable jurisdiction or the tax law of the jurisdiction does not require, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The update is effective for reporting periods after December 15, 2013 and the adoption of this update is not expected to have a material impact on our condensed consolidated financial statements.

In February 2013, the FASB issued an update to the topic Comprehensive Income. The update requires companies to provide additional information about the nature and amount of certain reclassifications out of AOCI, which impact the income statement. While the amendment does not change current reporting requirements, companies are required to provide information about the amounts reclassified out of AOCI by the respective line item. The update is effective for reporting periods after December 15, 2012 and the adoption of this update did not have a material impact on our condensed consolidated financial statements.

In January 2013, the FASB issued an update to the topic Balance Sheet. This update requires new disclosures presenting detailed information regarding both the gross and net basis of derivatives and other financial instruments that are eligible for offset in the balance sheet or that are subject to a master netting arrangement. The update is effective for the first quarter of 2013 and is to be applied retrospectively. As this new guidance relates to presentation only, the adoption of this update did not have a material impact on our condensed consolidated financial statements.

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Total Stock-Based Compensation Expense Recognized (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	$ 6,187	$ 4,516	$ 10,110	$ 7,810
Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	1,170	1,023	2,200	2,017
Restricted Stock and Restricted Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	3,250	2,258	4,987	3,718
Performance Shares and Deferred Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	$ 1,767	$ 1,235	$ 2,923	$ 2,075

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Summary of Long-Term Debt Obligations (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Long-term debt consists of:
Long-term borrowing	$ 95,635	$ 102,708
Less: Amounts due within one year	42,531	14,146
Total long-term debt	53,104	88,562
North Ocean Construction Financing | North Ocean 102
Long-term debt consists of:
Long-term borrowing	34,361	37,349
North Ocean Construction Financing | North Ocean 105
Long-term debt consists of:
Long-term borrowing	$ 61,274	$ 65,359

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SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Information about Operations in Different Segments

Summarized financial information is shown in the following tables:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	229,829		$	338,464		$	555,891		$	635,499
Atlantic		186,554			110,304			334,738			209,908
Middle East		230,867			440,480			564,109			771,519
Total revenues	$	647,250		$	889,248		$	1,454,738		$	1,616,926
Operating income (loss):
Asia Pacific	$	(32,395	)	$	46,605		$	55,557		$	104,039
Atlantic		(48,651	)		(14,042	)		(65,061	)		(26,035	)
Middle East		(68,490	)		46,819			(86,999	)		81,554
Total operating income (loss)	$	(149,536	)	$	79,382		$	(96,503	)	$	159,558
Capital expenditures(2):
Asia Pacific	$	41,430		$	21,666		$	45,185		$	38,231
Atlantic		34,303			52,615			56,313			64,490
Middle East		27,391			10,935			37,943			26,711
Corporate and Other		3,702			1,694			5,034			2,229
Total capital expenditures	$	106,826		$	86,910		$	144,475		$	131,661
Depreciation and amortization:
Asia Pacific	$	4,507		$	5,235		$	9,537		$	10,092
Atlantic		5,181			6,111			11,986			13,295
Middle East		7,516			7,554			14,026			15,048
Corporate and Other		1,892			3,698			3,769			7,439
Total depreciation and amortization	$	19,096		$	22,598		$	39,318		$	45,874
Drydock amortization:
Asia Pacific	$	2,088		$	2,997		$	5,049		$	5,989
Atlantic		1,908			2,877			3,816			6,313
Middle East		385			621			1,066			1,305
Total drydock amortization	$	4,381		$	6,495		$	9,931		$	13,607

⁽¹⁾  Intersegment transactions included in revenues were not significant for any of the periods presented.

⁽²⁾  Total capital expenditures presents expenditures for which cash payments were made during the period. These amounts exclude approximately $10.8 million and $1.3 million in accrued capital expenditures for the six months ended June 30, 2013 and 2012, respectively.

Information about Segment Assets by Country

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,176,446	$	1,402,923
Atlantic		561,633		536,734
Middle East		1,262,792		1,006,284
Corporate and other		195,076		387,686
Total assets	$	3,195,947	$	3,333,627

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per common share:

	Three Months Ended June 30,					Six Months Ended June 30,
	2013			2012		2013			2012
	(Unaudited) (In thousands)
Income (loss) from continuing operations less noncontrolling interests	$	(149,423	)	$	52,739	$	(128,870	)	$	112,000
Income from discontinued operations, net of tax		—			—		—			3,497
Net income (loss) attributable to McDermott International, Inc.	$	(149,423	)	$	52,739	$	(128,870	)	$	115,497
Weighted average common shares (basic)		236,199,438			235,681,213		236,070,311			235,444,733
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		—			1,779,552		—			1,951,964
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		236,199,438			237,460,765		236,070,311			237,396,697
Basic earnings (loss) per share
Income (loss) from continuing operations less noncontrolling interests		(0.63	)		0.22		(0.55	)		0.48
Income from discontinued operations, net of tax		—			—		—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22		(0.55	)		0.49
Diluted earnings (loss) per share:
Income (loss) from continuing operations less noncontrolling interests		(0.63	)		0.22		(0.55	)		0.47
Income from discontinued operations, net of tax		—			—		—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22		(0.55	)		0.49

(1) Approximately 2.9 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three months and six months ended June 30, 2013. Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three months and six months ended June 30, 2012, respectively.

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Summary of Available for Sale Securities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities fair value	$ 21,044	$ 45,992
Available for sale securities Unrealized losses	(1,659)	(2,376)
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities fair value	2,058	2,023
Available for sale securities Unrealized losses
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities fair value	9,893	29,737
Available for sale securities Unrealized losses
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities fair value	8,092	8,477
Available for sale securities Unrealized losses	(1,659)	(2,376)
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities fair value	1,001	5,755
Available for sale securities Unrealized losses

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Acquisition, Dispositions and Atlantic Restructuring Charges - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended		1 Months Ended	6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013	Jun. 30, 2013 Maximum Forecasted	Jun. 30, 2013 Minimum Forecasted	Jun. 30, 2013 Charter Fleet Business	Jun. 30, 2012 Charter Fleet Business	Dec. 31, 2011 Charter Fleet Business	Mar. 19, 2012 Charter Fleet Business Vessel	Mar. 19, 2012 Secunda International Limited Vessel	Jun. 30, 2013 Multi Function Support Vessel Vessel
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total purchase consideration			$ 9,000,000
Purchase consideration - cash			6,000,000
Purchase consideration - restricted shares			313,580
Number of vessels held for sale											4
Proceeds from sale of discontinued assets		32,000,000
Gain on sale of the Bold Endurance		12,500,000
Number of vessels operated									10
Number of vessels										14
Cash Proceeds from sale of business						61,000,000
Gain on sale						300,000	257,000
Write-down of charter fleet business								22,000,000
Expected restructuring cost				60,000,000	45,000,000
Restructuring cost incurred	$ 15,500,000

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Derivative Financial Instruments - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net gain (loss) on derivative financial instruments	$ (58,316,000)	$ (5,819,000)	$ 11,735,000	$ (18,714,000)	$ (1,657,000)	$ 3,088,000
Net deferred gains expected to be reclassified from AOCI over next 12 months	15,100,000
Notional value of outstanding derivative contracts	1,500,000,000
Derivative contracts, maturity date	Dec. 31, 2017
Fair value of Derivative contracts	42,900,000
EPCI projects
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional value of outstanding derivative contracts	$ 815,900,000

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Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Income (loss) from continuing operations less noncontrolling interests	$ (149,423)	$ 52,739	$ (128,870)	$ 112,000
Income from discontinued operations, net of tax				3,497
Net income (loss) attributable to McDermott International, Inc.	$ (149,423)	$ 52,739	$ (128,870)	$ 115,497
Weighted average common shares (basic)	236,199,438	235,681,213	236,070,311	235,444,733
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units		1,779,552		1,951,964
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)	236,199,438	237,460,765	236,070,311	237,396,697
Basic earnings (loss) per share:
Income (loss) from continuing operations less noncontrolling interests	$ (0.63)	$ 0.22	$ (0.55)	$ 0.48
Income from discontinued operations, net of tax				$ 0.01
Net income (loss) attributable to McDermott International, Inc.	$ (0.63)	$ 0.22	$ (0.55)	$ 0.49
Diluted earnings (loss) per share:
Income (loss) from continuing operations less noncontrolling interests	$ (0.63)	$ 0.22	$ (0.55)	$ 0.47
Income from discontinued operations, net of tax				$ 0.01
Net income (loss) attributable to McDermott International, Inc.	$ (0.63)	$ 0.22	$ (0.55)	$ 0.49

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Components of Contracts in Progress and Advance Billings on Contracts (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Contractors [Abstract]
Costs incurred less costs of revenue recognized	$ 83,354	$ 65,321
Revenues recognized less billings to customers	540,576	494,833
Contracts in Progress	623,930	560,154
Billings to customers less revenue recognized	467,049	394,352
Costs incurred less costs of revenue recognized	(165,623)	(152,656)
Advance Billings on Contracts	$ 301,426	$ 241,696

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Available-for-Sale Securities Measured at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 21,044	$ 45,992
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,058	2,023
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	9,893	29,737
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	8,092	8,477
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	1,001	5,755
Level 1
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 1 | Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 1 | Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 1 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 1 | Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 2
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	15,142	39,649
Level 2 | Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,058	2,023
Level 2 | Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	9,893	29,737
Level 2 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,190	2,134
Level 2 | Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	1,001	5,755
Level 3
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	5,902	6,343
Level 3 | Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 3 | Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities
Level 3 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	5,902	6,343
Level 3 | Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities

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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Total Stock-Based Compensation Expense Recognized

Total stock-based compensation expense, net recognized for the three months and six months ended June 30, 2013 and June 30, 2012 is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(Unaudited) (In thousands)
Stock Options	$	1,170	$	1,023	$	2,200	$	2,017
Restricted Stock and Restricted Stock Units		3,250		2,258		4,987		3,718
Performance Shares and Deferred Stock Units		1,767		1,235		2,923		2,075
Total	$	6,187	$	4,516	$	10,110	$	7,810

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows From Operating Activities:
Net Income (Loss)	$ (121,819)	$ 119,353
Less: Income from discontinued operations, net of tax		3,497
Income (loss) from continuing operations	(121,819)	115,856
Non-cash items included in net income:
Depreciation and amortization	39,318	45,874
Drydock amortization	9,931	13,607
Equity in loss of unconsolidated affiliates	9,592	6,334
Gain on asset disposals and impairments-net	(14,729)	(197)
Restructuring charges	15,462
Provision (benefit) from deferred taxes	(4,314)	1,194
Other non-cash items	9,790	10,858
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable	117,307	36,237
Net contracts in progress and advance billings on contracts	(4,051)	(150,712)
Accounts payable	24,413	4,074
Accrued and other current liabilities	(23,299)	10,145
Pension liability and accrued postretirement and employee benefits	(25,973)	15,426
Derivative instruments and hedging activities	(71,013)	(24,204)
Other assets and liabilities	(53,739)	6,695
Net Cash Provided By (Used In) Operating Activities-Continuing Operations	(96,482)	91,187
Cash Flows From Investing Activities:
Purchases of property, plant and equipment	(144,475)	(131,661)
Increase in restricted cash and cash equivalents	(6,370)	(2,062)
Purchases of available-for-sale securities	(8,637)	(66,266)
Sales and maturities of available-for-sale securities	34,031	125,895
Proceeds from the sale and disposal of assets	35,672	221
Other investing activities, net	(6,939)	(2,292)
Net Cash Used In Investing Activities-Continuing Operations	(96,718)	(76,165)
Net Cash Provided By Investing Activities-Discontinued Operations		60,671
Total Cash Used In Investing Activities	(96,718)	(15,494)
Cash Flows From Financing Activities:
Increase in debt		19,033
Payment of debt	(7,073)	(2,988)
Noncontrolling interests distributions and other	(11,243)	(15,726)
Other financing activities, net	(1,038)	(2,638)
Net Cash Used In Financing Activities-Continuing Operations	(19,354)	(2,319)
Effects of exchange rate changes on cash and cash equivalents	118	(168)
Net increase (decrease) in cash and cash equivalents	(212,436)	73,206
Cash and cash equivalents at beginning of period	640,147	570,854
Cash and cash equivalents at end of period-Continuing Operations	427,711	644,060
Cash paid during the period for:
Income taxes (net of refunds)	$ 72,363	$ 47,403

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

NOTE 1—BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations

McDermott International, Inc. (“MII”), a corporation incorporated under the laws of the Republic of Panama in 1959, is a leading engineering, procurement, construction and installation (“EPCI”) company focused on designing and executing complex offshore oil and gas projects worldwide. Providing fully integrated EPCI services, we deliver fixed and floating production facilities, pipeline installations and subsea systems from concept to commissioning. We support these activities with comprehensive project management and procurement services, while utilizing our fully integrated capabilities in both shallow water and deepwater construction. Our customers include national, major integrated and other oil and gas companies, and we operate in most major offshore oil and gas producing regions throughout the world. In these notes to our unaudited condensed consolidated financial statements, unless the context otherwise indicates, “we,” “us” and “our” mean MII and its consolidated subsidiaries.

Basis of Presentation

We have presented our unaudited condensed consolidated financial statements in U.S. Dollars, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) applicable to interim reporting. Financial information and disclosures normally included in our financial statements prepared annually in accordance with accounting principles generally accepted in the United States (“GAAP”) have been condensed or omitted. Readers of these financial statements should, therefore, refer to the consolidated financial statements and the accompanying notes in our annual report on Form 10-K for the year ended December 31, 2012.

We have included all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation. These condensed consolidated financial statements include the accounts of McDermott International, Inc., its consolidated subsidiaries and controlled entities. We use the equity method to account for investments in entities that we do not control, but over which we have significant influence. We generally refer to these entities as “unconsolidated affiliates” or “joint ventures.” We have eliminated all intercompany transactions and accounts.

During the quarter ended June 30, 2013, we commenced a restructuring of our Atlantic segment. See Note 2 for information relating to that restructuring. On March 19, 2012, we completed the sale of our former charter fleet business, which operated 10 of the 14 vessels acquired in our 2007 acquisition of substantially all of the assets of Secunda International Limited (the “Secunda Acquisition”). The condensed consolidated statements of income, comprehensive income, cash flows and equity reflect the historical operations of the charter fleet business as a discontinued operation through March 19, 2012. Accordingly, we have presented the notes to our condensed consolidated financial statements on the basis of continuing operations. In addition, certain 2012 amounts in the condensed consolidated balance sheet and statement of cash flows have been reclassified to conform to the 2013 presentation.

Business Segments

We operate in four primary operating segments, which consist of Asia Pacific, Atlantic, Caspian and the Middle East. The Caspian and Middle East operating segments are aggregated into the Middle East reporting segment due to the proximity of regions and similarities in the nature of services provided, economic characteristics and oversight responsibilities. Accordingly, we report financial results under reporting segments consisting of Asia Pacific, Atlantic and the Middle East. We also report certain corporate and other non-operating activities under the heading “Corporate and Other.” Corporate and Other primarily reflects corporate personnel and activities, incentive compensation programs and other costs, which are generally fully allocated to our operating segments. See Note 9 for summarized financial information on our segments.

Revenue Recognition

We determine the appropriate accounting method for each of our long-term contracts before work on the project begins. We generally recognize contract revenues and related costs on a percentage-of-completion method for individual contracts or combinations of contracts based on work performed, man hours, or a cost-to-cost method, as applicable to the activity involved. We include the amount of accumulated contract costs and estimated earnings that exceed billings to customers in contracts in progress. We include billings to customers that exceed accumulated contract costs and estimated earnings in advance billings on contracts. Most long-term contracts contain provisions for progress payments. We expect to invoice customers and collect all unbilled revenues. Certain costs are generally excluded from the cost-to-cost method of measuring progress, such as significant procurement costs for materials and third-party subcontractors. Costs incurred prior to a project award are generally expensed during the period in which they are incurred. Total estimated project costs, and resulting income, are affected by changes in the expected cost of materials and labor, productivity, vessel costs, scheduling and other factors. Additionally, external factors such as weather, customer requirements and other factors outside of our control may affect the progress and estimated cost of a project’s completion and, therefore, the timing and amount of revenue and income recognition.

In addition, change orders, which are a normal and recurring part of our business, can increase (and sometimes substantially) the future scope and cost of a job. Therefore, change order awards (although frequently beneficial in the long term) can have the short-term effect of reducing the job percentage of completion and thus the revenues and profits recognized to date. We regularly review contract price and cost estimates as the work progresses and reflect adjustments in profit, proportionate to the job percentage of completion in the period when those estimates are revised. Revenue from unapproved change orders is generally recognized to the extent of the lesser of amounts management expects to recover or costs incurred. The total unapproved change orders included in our estimates at completion aggregated approximately $445 million, of which approximately $170 million was included in backlog at June 30, 2013. Unapproved change orders that are disputed by the customer are treated as claims.

Deferred Profit Recognition

For contracts as to which we are unable to estimate the final profitability due to their uncommon nature, including first-of-a-kind projects, we recognize equal amounts of revenue and cost until the final results can be estimated more precisely. For these contracts, we only recognize gross margin when reliably estimable and the level of uncertainty has been significantly reduced, which we generally determine to be when the contract is at least 70% complete. We treat long-term construction contracts that contain such a level of risk and uncertainty that estimation of the final outcome is impractical as deferred profit recognition contracts. If while being accounted for under our deferred profit recognition policy, a current estimate of total contract costs indicates a loss, the projected loss is recognized in full and the project is accounted for under our normal revenue recognition guidelines.

We currently account for an Atlantic segment project under our deferred profit recognition policy. This project was awarded to one of our joint ventures, and the Atlantic segment’s backlog includes a subcontract from that joint venture, of which $211.9 million relating to this project remains in backlog at June 30, 2013. This project contributed revenues and costs equally, totaling approximately $37.0 million and $7.9 million for the three-month periods ended June 30, 2013 and 2012, respectively, and approximately $42.1 million and $13.1 million for the six-month periods ended June 30, 2013 and 2012, respectively.

Completed Contract Method

Under the completed contract method, revenue and gross profit is recognized only when a contract is completed or substantially complete. We generally do not enter into fixed-price contracts without an estimate of cost to complete that we believe to be accurate. However, it is possible that in the time between contract award and the commencement of work on a project, we could lose the ability to adequately forecast costs to complete based on intervening events, including, but not limited to, experience on similar projects, civil unrest, strikes and volatility in our expected costs. In such a situation, we would use the completed contract method of accounting for that project. We currently do not have any contracts that we account for under the completed contract method.

Claims Revenue

Claims revenue may relate to various factors, including the procurement of materials, equipment performance failures, change order disputes or schedule disruptions and other delays, including those associated with weather conditions. Claims revenue, when recorded, is only recorded to the extent of the lesser of the amounts management expects to recover or the associated costs incurred in our consolidated financial statements. We include certain unapproved claims in the applicable contract values when we have a legal basis to do so, consider collection to be probable and believe we can reliably estimate the ultimate value. Amounts attributable to unapproved change orders are not included in claims. We continue to actively engage in negotiations with our customers on our outstanding claims. However, these claims may be resolved at amounts that differ from our current estimates, which could result in increases or decreases in future estimated contract profits or losses. Claims are generally negotiated over the course of the respective projects and many of our projects are long-term in nature. None of the claims at June 30, 2013 were involved in litigation.

The amount of revenues and costs included in our estimates at completion (i.e., contract values) associated with such claims was $173.4 million and $29.0 million as of June 30, 2013 and 2012, respectively. Approximately 44%, 10% and 46% of those claim amounts at June 30, 2013 were related to our Asia Pacific, Atlantic and Middle East segments, respectively. These amounts are determined based on various factors, including our analysis of the underlying contractual language and our experience in making and resolving claims. For the three months ended June 30, 2013 and 2012, $11.0 million and $29.0 million, respectively, of revenues and costs are included in our financial statements. For the six months ended June 30, 2013 and 2012, $39.4 million and $38.5 million, respectively, of revenues and costs are reflected in our financial statements pertaining to claims. Approximately 14%, 13% and 73% of those claim amounts are related to our Asia Pacific, Atlantic and Middle East segments, respectively.

Our unconsolidated joint ventures also included an aggregate of $3.7 million of claims revenue and costs in their financial results for the six months ended June 30, 2013, with no amounts recognized during the three months ended June 30, 2013. For the three months and six months ended June 30, 2012, our joint ventures included approximately $1.0 million and $5.0 million, respectively of claims revenue and costs in their financial results.

Loss Recognition

A risk associated with fixed-priced contracts is that revenue from customers may not cover increases in our costs. It is possible that current estimates could materially change for various reasons, including, but not limited to, fluctuations in forecasted labor and vessel productivity, vessel repair requirements, weather downtime, supplier performance, pipeline lay rates or steel and other raw material prices. Increases in costs associated with our fixed-priced contracts could have a material adverse impact on our consolidated financial condition, results of operations and cash flows. Alternatively, reductions in overall contract costs at completion could materially improve our consolidated financial condition, results of operations and cash flows.

As of June 30, 2013, we have provided for our estimated costs to complete on all of our ongoing contracts. However, it is possible that current estimates could change due to unforeseen events, which could result in adjustments to overall contract costs. Variations from estimated contract performance could result in material adjustments to operating results for any fiscal quarter or year. For all contracts, if a current estimate of total contract cost indicates a loss, the projected loss is recognized in full when determined.

We currently have three active projects in our backlog that are in loss positions at June 30, 2013, whereby future revenues are expected to equal costs when recognized. Included in these projects are a marine project in our Asia Pacific segment, which we began in 2012 and expect to complete by mid-2014, and a five-year charter in Brazil, which we began in early 2012 and we are conducting through our Atlantic segment. These two projects represent the majority of our contract value in a loss position.

Use of Estimates

We use estimates and assumptions to prepare our financial statements in conformity with GAAP. These estimates and assumptions affect the amounts we report in our financial statements and accompanying notes. Our actual results could differ from these estimates, and variances could materially affect our financial condition and results of operations in future periods. Changes in project estimates generally exclude change orders and changes in scope, but may include, without limitation, unexpected changes in weather conditions, productivity, unanticipated vessel repair requirements, customer and vendor delays and other costs. We generally expect to experience a variety of unanticipated events, and some of these events can result in significant cost increases above cost amounts we previously estimated. Variations from estimated contract performance could result in material adjustments to operating results.

The following is a discussion of our most significant changes in estimates, which impacted operating income in each of our segments for the three and six months ended June 30, 2013 and 2012.

Three months ended June 30, 2013

The Asia Pacific segment was primarily impacted by changes in estimates on one subsea project in Malaysia. On that project, we increased our estimated cost at completion by approximately $62.0 million in the three months ended June 30, 2013, primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime. In consideration of these factors, the expected completion date for the project was extended from the fourth quarter of 2013 to the middle of 2014.

The Middle East segment was impacted by changes in estimates on one of our EPCI projects in Saudi Arabia. On that project, we increased our estimated cost at completion by approximately $38.0 million in the three months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the three months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

The Atlantic segment was impacted by changes in estimates on two projects. On one of those projects, we recognized approximately $7.0 million of incremental project losses in the three months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. We also recognized project losses of approximately $3.0 million in the three months ended June 30, 2013 on a fabrication project in Morgan City, which was completed during the quarter ended June 30, 2013.

Six months ended June 30, 2013

The Asia Pacific segment was primarily impacted by changes in estimates on one project. On this project (the project in Malaysia described above), we increased our estimated cost at completion by approximately $66.0 million in the six months ended June 30, 2013, primarily due to project delays related to the availability of the marine vessel dedicated for this project, which required certain vessel upgrades. Marine campaign activities are now planned to occur in two phases to avoid anticipated adverse weather periods. As a result, the project will require two vessel mobilizations, resulting in increases to the estimated costs to complete, including costs associated with forecasted liquidated damages. The marine campaign has also been impacted by third-party vessel mechanical downtime.

The Middle East segment was impacted by changes in estimates on the EPCI project in Saudi Arabia discussed above. On that project, we increased our estimated cost at completion by approximately $43.0 million in the six months ended June 30, 2013, primarily as a result of revisions to the project’s execution plan, increases in our estimated cost to complete due to an extended offshore hookup campaign requiring multiple vessel mobilizations and, to a lesser extent, delays in the completion of onshore activities. While the project recognized losses in the six months ended June 30, 2013, it remains in an overall profitable position and is expected to be completed during the first half of 2014, subject to customer deliverables and concurrence on execution plans.

The Atlantic segment was impacted by changes in estimates on one project. On that project, we recognized approximately $14.0 million of incremental project losses in the six months ended June 30, 2013, primarily due to lower than expected labor productivity. That project is currently in a loss position and is expected to be completed by the end of 2013.

2012 Periods

Operating income for each of the three-month and six-month periods ended June 30, 2012 was not significantly affected by changes in estimates.

Loss Contingencies

We record liabilities for loss contingencies when it is probable that a liability has been incurred and the amount of loss is reasonably estimable. We provide disclosure when there is a reasonable possibility that the ultimate loss will exceed the recorded provision or if such loss is not reasonably estimable. We are currently involved in litigation and other proceedings, as discussed in Note 10. We have accrued our estimates of the probable losses associated with these matters, and associated legal costs are generally recognized in selling, general and administrative expenses as incurred. However, our losses are typically resolved over long periods of time and are often difficult to estimate due to various factors, including the possibility of multiple actions by third parties. Therefore, it is possible future earnings could be affected by changes in our estimates related to these matters.

Cash and Cash Equivalents

Our cash and cash equivalents are highly liquid investments with maturities of three months or less when we purchase them. We record cash and cash equivalents as restricted when we are unable to freely use such cash and cash equivalents for our general operating purposes. At June 30, 2013, all of our restricted cash was held in restricted foreign-entity accounts.

Investments

We classify investments available for current operations as current assets in the accompanying balance sheets, and we classify investments held for long-term purposes as noncurrent assets. We adjust the amortized cost of debt securities for amortization of premiums and accretion of discounts to maturity. That amortization is included in interest income. We include realized gains and losses on our investments in other income (expense)—net. The cost of securities sold is based on the specific identification method. We include interest earned on securities in interest income.

Investments in Unconsolidated Affiliates

We generally use the equity method of accounting for affiliates in which our investment ownership ranges from 20% to 50%. Currently, most of our significant investments in affiliates that are not consolidated are recorded using the equity method.

Accounts Receivable

Accounts Receivable—Trade, Net

A summary of contract receivables is as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	209,880		$	273,729
Completed contracts		61,450			38,858
Retainages		64,839			133,619
Unbilled		5,087			4,710
Less allowances		(22,531	)		(22,116	)
Accounts receivable—trade, net	$	318,725		$	428,800

We expect to invoice our unbilled receivables once certain milestones or other metrics are reached, and we expect to collect all unbilled amounts. We believe that our provision for losses on uncollectible accounts receivable is adequate for our credit loss exposure.

Contract retainages generally represent amounts withheld by our customers until project completion, in accordance with the terms of the applicable contracts. The following is a summary of retainages on our contracts:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	64,839	$	133,619
Retainages expected to be collected after one year		95,286		32,085
Total retainages	$	160,125	$	165,704

We have included in accounts receivable—trade, net, retainages expected to be collected within one year. Retainages expected to be collected after one year are included in other assets.

Accounts Receivable—Other

Accounts receivable—other was $65.6 million and $75.5 million at June 30, 2013 and December 31, 2012, respectively. The balance primarily relates to transactions with unconsolidated affiliates, receivables associated with our hedging activities and value-added tax. These amounts are expected to be collected within 12 months, and any allowance for doubtful accounts on our accounts receivable—other is based on our estimate of the amount of probable losses due to the inability to collect these amounts (based on historical collection experience and other available information). As of June 30, 2013 and December 31, 2012, no such allowance for doubtful accounts was recorded.

Contracts in Progress and Advance Billings on Contracts

Contracts in progress was $623.9 million and $560.1 million at June 30, 2013 and December 31, 2012, respectively. Advance billings on contracts was $301.4 million and $241.7 million at June 30, 2013 and December 31, 2012, respectively. A detail of the components of contracts in progress and advance billings on contracts is as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Costs incurred less costs of revenue recognized	$	83,354	$	65,321
Revenues recognized less billings to customers		540,576		494,833
Contracts in Progress	$	623,930	$	560,154

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Billings to customers less revenue recognized	$	467,049		$	394,352
Costs incurred less costs of revenue recognized		(165,623	)		(152,656	)
Advance Billings on Contracts	$	301,426		$	241,696

Fair Value of Financial Instruments

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. An established hierarchy for inputs is used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect our assumptions about the factors that market participants would use in valuing the asset or liability.

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

• Level 1—inputs are based upon quoted prices for identical instruments traded in active markets.

• Level 2—inputs are based upon quoted prices for similar instruments in active markets, quoted prices for similar or identical instruments in inactive markets and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets and liabilities.

• Level 3—inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models and similar valuation techniques.

The carrying amounts that we have reported for financial instruments, including cash and cash equivalents, accounts receivables and accounts payable approximate their fair values. See Note 6 for additional information regarding fair value measurements.

Derivative Financial Instruments

Our worldwide operations give rise to exposure to changes in certain market conditions, which may adversely impact our financial performance. When we deem it appropriate, we use derivatives as a risk management tool to mitigate the potential impacts of certain market risks. The primary market risk we manage through the use of derivative instruments is movement in foreign currency exchange rates. We use foreign currency derivative contracts to reduce the impact of changes in foreign currency exchange rates on our operating results. We use these instruments to hedge our exposure associated with revenues and/or costs on our long-term contracts and other cash flow exposures that are denominated in currencies other than our operating entities’ functional currencies. We do not hold or issue financial instruments for trading or other speculative purposes.

In certain cases, contracts with our customers contain provisions under which some payments from our customers are denominated in U.S. Dollars and other payments are denominated in a foreign currency. In general, the payments denominated in a foreign currency are designed to compensate us for costs that we expect to incur in such foreign currency. In these cases, we may use derivative instruments to reduce the risks associated with foreign currency exchange rate fluctuations arising from differences in timing of our foreign currency cash inflows and outflows. See Note 5 for additional information regarding derivative financial instruments.

Foreign Currency Translation

We translate assets and liabilities of our foreign operations, other than operations in highly inflationary economies, into U.S. Dollars at period-end exchange rates, and we translate income statement items at average exchange rates for the periods presented. We record adjustments resulting from the translation of foreign currency financial statements as a component of accumulated other comprehensive income (loss) (“AOCI”), net of tax.

Earnings per Share

We have computed earnings per common share on the basis of the weighted average number of common shares, and, where dilutive, common share equivalents, outstanding during the indicated periods. See Note 8 for our earnings per share computations.

Accumulated Other Comprehensive Loss

The components of AOCI included in stockholders’ equity are as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,886	)	$	(3,366	)
Net loss on investments		(1,875	)		(2,316	)
Net gain (loss) on derivative financial instruments		(58,316	)		11,735
Unrecognized losses on benefit obligations		(93,596	)		(100,466	)
Accumulated other comprehensive loss	$	(156,673	)	$	(94,413	)

The following tables present the components of AOCI and the amounts that were reclassified during the period:

For the three months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, March 31, 2013	$	(1,915	)	$	(5,819	)	$	3,848		$	(96,811	)	$	(100,697	)
Other comprehensive income (loss)		40			(55,563	)		(6,734	)		—			(62,257	)
Amounts reclassified from AOCI		—			3,066	(3)		—			3,215	(4)		6,281
Net current period other comprehensive income (loss)		40			(52,497	)		(6,734	)		3,215			(55,976	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the three months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)
Other comprehensive income		431			(18,164	)		3,326			—			(14,407	)
Amounts reclassified from AOCI		—			1,107	(3)		—			2,681	(4)		3,788
Net current period other comprehensive income		431			(17,057	)		3,326			2,681			(10,619	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

For the six months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,316	)	$	11,735		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss)		441			(71,013	)		480			—			(70,092	)
Amounts reclassified from AOCI		—			962	(3)		—			6,870	(4)		7,832
Net current period other comprehensive income (loss)		441			(70,051	)		480			6,870			(62,260	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the six months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income		1,127			(24,051	)		6,439			—			(16,485	)
Amounts reclassified from AOCI		—			2,249	(3)		—			5,726	(4)		7,975
Net current period other comprehensive income		1,127			(21,802	)		6,439			5,726			(8,510	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

(1) Refer to Note 5 for additional details

(2) Refer to Note 4 for additional details

(3) Reclassified to cost of operations

(4) Reclassified to selling, general and administrative expenses

Impairment Review

We review goodwill for impairment on an annual basis or more frequently if circumstances indicate that impairment may exist. The annual impairment review involves comparing the fair value to the net book value of each applicable reporting unit and, therefore, is significantly impacted by estimates and judgments.

We review our long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If an evaluation is required, the fair value of each applicable asset is compared to its carrying value. Factors that impact our determination of potential impairment include forecasted utilization of equipment and estimates of forecasted cash flows from projects expected to be performed in future periods. Our estimates of cash flow may differ from actual cash flow due to, among other things, technological changes, economic conditions or changes in operating performance. Any changes in such factors may negatively affect our business segments and result in future asset impairments.

Income Taxes

We provide for income taxes based on the tax laws and rates in the countries in which we conduct our operations. MII is a Panamanian corporation that earns all of its income outside of Panama. As a result, we are not subject to income tax in Panama. We operate in various taxing jurisdictions around the world. Each of these jurisdictions has a regime of taxation that varies, not only with respect to nominal rates, but also with respect to the basis on which these rates are applied. These variations, along with changes in our mix of income or loss from these jurisdictions, may contribute to shifts, sometimes significant, in our effective tax rate.

Three months ended June 30, 2013

For the three months ended June 30, 2013, we recognized a loss before provision for income taxes of $140.2 million, compared to income of $82.3 million in the three months ended June 30, 2012. In the aggregate, the provision for income taxes was $5.9 million and $28.3 million for the three months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

Six months ended June 30, 2013

For the six months ended June 30, 2013, we recognized a loss before provision for income taxes of $88.6 million, compared to income of $172.9 million in the six months ended June 30, 2012. In the aggregate, the provision for income taxes was $33.2 million and $57.1 million for the six months ended June 30, 2013 and 2012, respectively. The decline in the provision for income taxes was principally driven by lower taxable income, which was partially offset by losses in certain tax jurisdictions where we do not expect to receive a tax benefit (primarily the United States, the United Arab Emirates and Malaysia).

At June 30, 2013, we had foreign net operating loss carryforwards available to offset future taxable income in foreign jurisdictions, with a valuation allowance of $69 million against $78 million of the related deferred taxes. The remaining $9 million of foreign deferred taxes is expected to be realized through future foreign taxable income. At June 30, 2013, we had U.S. federal net operating loss carryforwards but have fully reserved the $133 million deferred tax asset.

Recently Issued Accounting Standards

On July 18, 2013, the Financial Accounting Standards Board (“FASB”) issued an update to the topic Income Taxes. The update clarifies that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward if such settlement is required or expected in the event the uncertain tax position is disallowed. In situations where these items are not available at the reporting date under the tax law of the applicable jurisdiction or the tax law of the jurisdiction does not require, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The update is effective for reporting periods after December 15, 2013 and the adoption of this update is not expected to have a material impact on our condensed consolidated financial statements.

In February 2013, the FASB issued an update to the topic Comprehensive Income. The update requires companies to provide additional information about the nature and amount of certain reclassifications out of AOCI, which impact the income statement. While the amendment does not change current reporting requirements, companies are required to provide information about the amounts reclassified out of AOCI by the respective line item. The update is effective for reporting periods after December 15, 2012 and the adoption of this update did not have a material impact on our condensed consolidated financial statements.

In January 2013, the FASB issued an update to the topic Balance Sheet. This update requires new disclosures presenting detailed information regarding both the gross and net basis of derivatives and other financial instruments that are eligible for offset in the balance sheet or that are subject to a master netting arrangement. The update is effective for the first quarter of 2013 and is to be applied retrospectively. As this new guidance relates to presentation only, the adoption of this update did not have a material impact on our condensed consolidated financial statements.

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PENSION PLANS

6 Months Ended

Jun. 30, 2013

Compensation And Retirement Disclosure [Abstract]

PENSION PLANS

NOTE 4—PENSION PLANS

Although we currently provide retirement benefits for most of our U.S. employees through sponsorship of the McDermott Thrift Plan, some of our longer-term U.S. employees and former employees are entitled to retirement benefits under the McDermott (U.S.) Retirement Plan, a non-contributory qualified defined benefit pension plan (the “McDermott Plan”), and several non-qualified supplemental defined benefit pension plans. The McDermott Plan and the non-qualified supplemental defined benefit pension plans are collectively referred to herein as the “Domestic Plans.” The McDermott Plan has been closed to new participants since 2006, and benefit accruals under the McDermott Plan were frozen completely in 2010.

We also sponsor a defined benefit pension plan established under the laws of the Commonwealth of the Bahamas, the J. Ray McDermott, S.A. Third Country National Employees Pension Plan (the “TCN Plan”), which provides retirement benefits for certain of our current and former foreign employees. Effective August 1, 2011, new entry into the TCN Plan was closed, and effective December 31, 2011, benefit accruals under the TCN Plan were frozen. Effective January 1, 2012, we established a new global defined contribution plan to provide retirement benefits to non-U.S. expatriate employees who may have otherwise obtained benefits under the TCN Plan.

Net periodic benefit cost for the Domestic Plans and the TCN Plan includes the following components:

	Domestic Plans
	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Interest cost	$	11,831		$	6,569		$	11,998		$	13,262
Expected return on plan assets		(16,153	)		(8,905	)		(19,153	)		(17,905	)
Recognized net actuarial loss and other		2,714			2,228			5,866			4,818
Net periodic benefit cost	$	(1,608	)	$	(108	)	$	(1,289	)	$	175

	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Interest cost	$	467		$	461		$	934		$	922
Expected return on plan assets		(650	)		(611	)		(1,301	)		(1,222	)
Recognized net actuarial loss		508			447			1,015			893
Net periodic benefit cost	$	325		$	297		$	648		$	593

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ACQUISITION, DISPOSITIONS AND ATLANTIC RESTRUCTURING CHARGES

6 Months Ended

Jun. 30, 2013

Discontinued Operations And Disposal Groups [Abstract]

ACQUISITION, DISPOSITIONS AND ATLANTIC RESTRUCTURING CHARGES

NOTE 2—ACQUISITION, DISPOSITIONS AND ATLANTIC RESTRUCTURING CHARGES

Acquisition

During the quarter ended March 31, 2013, we entered into a share purchase agreement to acquire all of the issued and outstanding shares of capital stock of Deepsea Group Limited, a United Kingdom-based company that provides subsea and other engineering services to international energy companies, primarily through offices in the United Kingdom and the United States. Total consideration was approximately $9.0 million, which includes cash ($6.0 million) and the delivery of 313,580 restricted shares of MII common stock (out of treasury). The transaction is being accounted for using the acquisition method and, accordingly, assets acquired and liabilities assumed are recorded at their respective fair values. The preliminary purchase price allocation has not been completed and is subject to change for a period of one-year following the acquisition. Results of operations and pro forma results have not been presented, as the effects of this transaction were not material to our condensed consolidated financial statements.

Dispositions

Assets Held for Sale

We previously committed to a plan to sell four of our multi-function marine vessels, specifically the Bold Endurance, DB 16, DB 26 and the DLB KPI. Assets classified as held for sale are no longer depreciated. During the quarter ended March 31, 2013, we completed the sale of the Bold Endurance and the DB 26 for aggregate cash proceeds of approximately $32.0 million, resulting in an aggregate gain of approximately $12.5 million. We remain in active discussions with interested parties to sell the DLB KP1 and DB 16.

Charter Fleet Business

On March 19, 2012, we completed the sale of our former charter fleet business, which operated 10 of the 14 vessels acquired in 2007 in the Secunda Acquisition. The cash proceeds from the charter fleet sale were approximately $61.0 million, resulting in a gain on the sale of approximately $0.3 million. For the year ended December 31, 2011, we recognized an approximate $22.0 million write-down of our former charter fleet business.

The following table presents selected financial information regarding the results of operations attributable to our former charter fleet business:

	Six Months Ended June 30, 2012
	(Unaudited) (In thousands)
Revenues	$	8,184
Gain on disposal of discontinued operations		257
Income before provision for income taxes		3,240
Income from discontinued operations, net of tax	$	3,497

Atlantic Restructuring

We have previously implemented various cost reduction measures to better align our Atlantic operations with anticipated business levels. However, due to the continued decline and recurring operating losses experienced in our Atlantic segment, we commenced a restructuring of this segment’s operations during the quarter ended June 30, 2013, which involves our Morgan City, Louisiana, Houston, Texas, New Orleans, Louisiana and Brazil locations. The restructuring involves, among other things, reductions of administrative, fabrication and engineering personnel, and a plan to discontinue utilization of the Morgan City facility (after the completion of existing backlog projects, which are currently forecasted to be completed in the second quarter of 2014). Future fabrication and marine operations in the Atlantic segment are expected to be executed using the Altamira, Mexico facility for the foreseeable future. In addition, we have decided to exit a joint venture. Costs associated with the restructuring primarily include severance and other personnel-related costs, asset impairment and relocation costs and future unutilized lease costs. These costs are expected to range between $45 million to $60 million in the aggregate, and the majority of these costs are expected to be recognized over four quarters beginning with the quarter ended June 30, 2013. Of the total anticipated costs, we incurred approximately $15.5 million during the quarter ended June 30, 2013.

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Derivative Financial Instruments (Detail) (Derivatives Designated as Hedges, USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivative [Line Items]
Asset derivatives fair value	$ 6,925	$ 26,081
Liability derivatives fair value	49,817	4,647
Accounts receivable-other
Derivative [Line Items]
Asset derivatives fair value	5,427	12,311
Other assets
Derivative [Line Items]
Asset derivatives fair value	1,498	13,770
Accounts payable
Derivative [Line Items]
Liability derivatives fair value	15,539	3,604
Other liabilities
Derivative [Line Items]
Liability derivatives fair value	$ 34,278	$ 1,043

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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended				3 Months Ended	6 Months Ended		6 Months Ended	3 Months Ended		6 Months Ended									1 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Project	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Minimum	Jun. 30, 2013 Maximum	Jun. 30, 2013 Backlog	Jun. 30, 2013 Atlantic	Jun. 30, 2013 Atlantic	Jun. 30, 2012 Atlantic	Jun. 30, 2013 Atlantic Backlog	Jun. 30, 2013 Atlantic Deferred profit recognition contracts	Jun. 30, 2012 Atlantic Deferred profit recognition contracts	Jun. 30, 2013 Atlantic Deferred profit recognition contracts Project	Jun. 30, 2012 Atlantic Deferred profit recognition contracts	Jun. 30, 2013 Asia Pacific Vessel	Jun. 30, 2012 Asia Pacific	Jun. 30, 2013 Asia Pacific Project One of Two	Jun. 30, 2013 Middle East Project	Jun. 30, 2012 Middle East Project	Jun. 30, 2013 Middle East Project EPCI projects	Mar. 19, 2012 Charter Fleet Business Vessel	Mar. 19, 2012 Secunda International Limited Vessel	Jun. 30, 2013 Unapproved claims	Jun. 30, 2012 Unapproved claims	Jun. 30, 2013 Consolidated Entities	Jun. 30, 2012 Consolidated Entities	Jun. 30, 2013 Consolidated Entities	Jun. 30, 2012 Consolidated Entities	Jun. 30, 2013 Unconsolidated joint ventures	Jun. 30, 2012 Unconsolidated joint ventures	Jun. 30, 2013 Unconsolidated joint ventures	Jun. 30, 2012 Unconsolidated joint ventures	Jun. 30, 2013 Fabrication Services [Member] Atlantic
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of vessels operated																							10
Number of vessels																								14
Unapproved change orders	$ 445,000,000		$ 445,000,000					$ 170,000,000
Percentage of completion to recognize expected profit									70.00%	70.00%
Number of projects accounted under deferred profit recognition policy															1
Revenues	647,250,000	889,248,000	1,454,738,000	1,616,926,000								211,900,000	37,000,000	7,900,000	42,100,000	13,100,000											11,000,000	29,000,000	39,400,000	38,500,000	0	1,000,000	3,700,000	5,000,000
Cost of operations	723,259,000	759,704,000	1,436,073,000	1,357,138,000									37,000,000	7,900,000	42,100,000	13,100,000									173,400,000	29,000,000	11,000,000	29,000,000	39,400,000	38,500,000	0	1,000,000	3,700,000	5,000,000
Net amount of revenues and costs included in our estimates relating to claims																									173,400,000	29,000,000
Claim amounts									10.00%	10.00%	13.00%						44.00%	14.00%		46.00%	73.00%
Number of Projects in Loss Position			3
Number of Projects, Majority Portion in Loss Position			2
Changes in project estimates																	62,000,000		66,000,000	38,000,000		43,000,000
Number of Vessel mobilized																	2
Incremental project losses									7,000,000	14,000,000																									3,000,000
Equity method of accounting investment ownership						20.00%	50.00%
Accounts receivable - other	65,627,000		65,627,000		75,461,000
Allowance for doubtful accounts	0		0		0
Contracts in progress			623,930,000		560,154,000
Advance billing on contracts			301,426,000		241,696,000
Income (loss) from continuing operations before provision for income taxes and noncontrolling interests	(140,235,000)	82,274,000	(88,604,000)	172,944,000
Provision for Income Taxes	5,902,000	28,345,000	33,215,000	57,088,000
Net operating loss carry forwards, valuation allowance	69,000,000		69,000,000
Deferred taxes related to net operating loss carry forwards	78,000,000		78,000,000
Deferred taxes expected to be realized through future taxable income	9,000,000		9,000,000
Deferred taxes related to net operating loss carry forwards	$ 133,000,000		$ 133,000,000

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Accumulated Other Comprehensive Loss included in Stockholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Statement Of Income And Comprehensive Income [Abstract]
Foreign currency translation adjustments	$ (2,886)	$ 3,848	$ (3,366)	$ (5,999)	$ (9,325)	$ (12,438)
Net loss on investments	(1,875)	(1,915)	(2,316)	(3,275)	(3,706)	(4,402)
Net gain (loss) on derivative financial instruments	(58,316)	(5,819)	11,735	(18,714)	(1,657)	3,088
Unrecognized losses on benefit obligations	(93,596)	(96,811)	(100,466)	(82,552)	(85,233)	(88,278)
Accumulated other comprehensive loss	$ (156,673)	$ (100,697)	$ (94,413)	$ (110,540)	$ (99,921)	$ (102,030)

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Comparison of Key Financial Covenants and Current Compliance (Detail)	Jun. 30, 2013
Financing Activities and Borrowing Arrangements [Line Items]
Permitted leverage ratio, maximum	0.92
Minimum interest coverage ratio	17.19%
Covenant Requirement
Financing Activities and Borrowing Arrangements [Line Items]
Permitted leverage ratio, maximum	3.00
Minimum interest coverage ratio	4.00%

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Earnings Per Share - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Antidilutive securities excluded from earnings per share computation, shares	2.9	1.8	2.9	3.6

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Changes in Level Three Instrument Measured on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Fair Value Disclosures [Abstract]
Balance at beginning of period	$ 6,157	$ 6,177	$ 6,343	$ 6,030
Total realized and unrealized gains	18	456	228	898
Principal repayments	(273)	(295)	(669)	(590)
Balance at end of period	$ 5,902	$ 6,338	$ 5,902	$ 6,338

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net Income (Loss)	$ (146,137)		$ 53,929		$ (121,819)		$ 119,353
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs	3,215		2,681		6,870		5,726
Unrealized gain on investments	40		431		441		1,128
Translation adjustments	(6,734)		3,326		480		6,439
Unrealized gain (loss) on derivatives	(55,578)		(18,216)		(71,040)		(24,103)
Realized loss on derivatives	3,066		1,107		962		2,401
Other comprehensive income (loss), net of tax	(55,991)	[1]	(10,671)	[1]	(62,287)	[1]	(8,409)	[1]
Total Comprehensive Income (Loss)	(202,128)		43,258		(184,106)		110,944
Less: Comprehensive Income Attributable to Noncontrolling Interests.	3,271		1,138		7,024		3,957
Comprehensive Income (Loss) Attributable to McDermott International, Inc.	$ (205,399)		$ 42,120		$ (191,130)		$ 106,987

[1] The tax impacts on amounts presented in other comprehensive income (loss) are not significant.

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STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

STOCK-BASED COMPENSATION

NOTE 7—STOCK-BASED COMPENSATION

Equity instruments are measured at fair value on the grant date. Stock-based compensation expense is generally recognized on a straight-line basis over the requisite service periods of the awards. Compensation expense is based on awards we expect to ultimately vest. Therefore, we have reduced compensation expense for estimated forfeitures based on our historical forfeiture rates. Our estimate of forfeitures is determined at the grant date and is revised if our actual forfeiture rate is materially different from our estimate.

We use a Black-Scholes model to determine the fair value of certain share-based awards, such as stock options. Additionally, we use a Monte Carlo model to determine the fair value of certain share-based awards that contain market and performance-based conditions. The use of these models requires highly subjective assumptions, such as assumptions about the expected life of the award, vesting probability, expected dividend yield and the volatility of our stock price. Total stock-based compensation expense, net recognized for the three months and six months ended June 30, 2013 and June 30, 2012 is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(Unaudited) (In thousands)
Stock Options	$	1,170	$	1,023	$	2,200	$	2,017
Restricted Stock and Restricted Stock Units		3,250		2,258		4,987		3,718
Performance Shares and Deferred Stock Units		1,767		1,235		2,923		2,075
Total	$	6,187	$	4,516	$	10,110	$	7,810

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	243,928,572	243,442,156
Treasury stock, shares	7,364,866	7,574,903

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Revenues	$ 647,250	$ 889,248	$ 1,454,738	$ 1,616,926
Costs and Expenses:
Cost of operations	723,259	759,704	1,436,073	1,357,138
Selling, general and administrative expenses	52,617	47,482	104,843	94,093
(Gain) loss on asset disposals	(13)	29	(14,729)	(197)
Restructuring expenses	15,462		15,462
Total costs and expenses	791,325	807,215	1,541,649	1,451,034
Equity in Loss of Unconsolidated Affiliates	(5,461)	(2,651)	(9,592)	(6,334)
Operating Income (Loss)	(149,536)	79,382	(96,503)	159,558
Other Income (Expense):
Interest income, net	428	1,585	770	3,219
Gain on foreign currency-net	8,904	1,256	6,378	10,697
Other income (expense)-net	(31)	51	751	(530)
Total other income (expense)	9,301	2,892	7,899	13,386
Income (loss) from continuing operations before provision for income taxes and noncontrolling interests	(140,235)	82,274	(88,604)	172,944
Provision for Income Taxes	5,902	28,345	33,215	57,088
Income (loss) from continuing operations before noncontrolling interests	(146,137)	53,929	(121,819)	115,856
Total income from discontinued operations, net of tax				3,497
Net Income (Loss)	(146,137)	53,929	(121,819)	119,353
Less: Net Income Attributable to Noncontrolling Interests	3,286	1,190	7,051	3,856
Net income (loss) attributable to McDermott International, Inc.	$ (149,423)	$ 52,739	$ (128,870)	$ 115,497
Basic:
Income (loss) from continuing operations, less noncontrolling interests	$ (0.63)	$ 0.22	$ (0.55)	$ 0.48
Income from discontinued operations, net of tax				$ 0.01
Net income (loss) attributable to McDermott International, Inc.	$ (0.63)	$ 0.22	$ (0.55)	$ 0.49
Diluted:
Income (loss) from continuing operations, less noncontrolling interests	$ (0.63)	$ 0.22	$ (0.55)	$ 0.47
Income from discontinued operations, net of tax				$ 0.01
Net income (loss) attributable to McDermott International, Inc.	$ (0.63)	$ 0.22	$ (0.55)	$ 0.49
Shares used in the computation of earnings per share:
Basic	236,199,438	235,681,213	236,070,311	235,444,733
Diluted	236,199,438	237,460,765	236,070,311	237,396,697

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Segment Reporting - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013 Segment	Jun. 30, 2012 Segment
Segment Reporting [Abstract]
Number of reporting segments	3	4
Accrued Capital Expenditure	$ 10.8	$ 1.3

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Contract Receivables (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages	$ 64,839	$ 133,619
Less allowances	0	0
Accounts receivable-trade, net	318,725	428,800
Contract Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages	64,839	133,619
Unbilled	5,087	4,710
Less allowances	(22,531)	(22,116)
Accounts receivable-trade, net	318,725	428,800
Contract Receivable | Contracts in progress
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contracts receivable	209,880	273,729
Contract Receivable | Completed contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contracts receivable	$ 61,450	$ 38,858

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable—other	$	5,427	$	12,311
Other assets		1,498		13,770
Total asset derivatives	$	6,925	$	26,081
Accounts payable	$	15,539	$	3,604
Other liabilities		34,278		1,043
Total liability derivatives	$	49,817	$	4,647

Effects of Derivative Instruments on Financial Statements

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Amount of loss recognized in other comprehensive income (loss)	$	(55,563	)	$	(18,164	)	$	(71,013	)	$	(24,204	)
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	(2,845	)	$	676		$	(831	)	$	1,970
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain on foreign currency—net	$	7,291		$	9,115		$	4,442		$	11,465

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Fair Values of Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Fair Value Measurements [Line Items]
Net unrealized loss on investment	$ 1.9	$ 2.4
Asset-backed securities and collateralized mortgage obligations
Fair Value Measurements [Line Items]
Asset-backed and mortgage-backed securities with maturities	26 years
Corporate notes and bonds
Fair Value Measurements [Line Items]
Asset-backed and mortgage-backed securities with maturities	3 years

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	1 Months Ended
	Jun. 30, 2013	Dec. 16, 2005 Antoine, et al. vs. J. Ray McDermott, Inc., et al. LegalMatter	Jan. 29, 2007 Antoine, et al. vs. J. Ray McDermott, Inc., et al. Judicial District Court for Harris County, Texas LegalMatter	Jan. 29, 2007 Antoine, et al. vs. J. Ray McDermott, Inc., et al. Judicial District Court for Harris County, Texas Other Employers than JRMI and MI LegalMatter	Jan. 29, 2007 Antoine, et al. vs. J. Ray McDermott, Inc., et al. Judicial District Court for Harris County, Texas Maritime products LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. United States District Court for the Southern District of Texas LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. United States District Court for the Southern District of Texas Other Employers than JRMI and MI LegalMatter
Commitments and Contingencies Disclosure [Line Items]
Legal claims	On December 16, 2005, a proceeding entitled Antoine, et al. vs. J. Ray McDermott, Inc., et al.(“Antoine Suit”), was filed in the 24th Judicial District Court, Jefferson Parish, Louisiana, by approximately 88 plaintiffs against approximately 215 defendants, including our subsidiaries formerly known as J. Ray McDermott (“JRMI”) and Delta Hudson Engineering Corporation (“DHEC”), generally alleging injuries for exposure to asbestos, and unspecified chemicals, metals and noise while the plaintiffs were allegedly employed as Jones Act seamen. This case was dismissed by the Court on January 10, 2007, without prejudice to plaintiffs’ rights to refile their claims. On January 29, 2007, 21 plaintiffs from the dismissed Antoine Suit filed a matter entitled Boudreaux, et al. v. McDermott, Inc., et al. (the “Boudreaux Suit”), in the United States District Court for the Southern District of Texas, against JRMI and our subsidiary formerly known as McDermott Incorporated, and approximately 30 other employer defendants, alleging Jones Act seaman status and generally alleging exposure to welding fumes, solvents, dyes, industrial paints and noise. The Boudreaux Suit was transferred to the United States District Court for the Eastern District of Louisiana on May 2, 2007, which entered an order in September 2007 staying the matter until further order of the Court due to the bankruptcy filing of one of the co-defendants.
Number of plaintiffs		88	43			21
Number of defendants		215		65	42		30
Environmental reserves, current	$ 0.6
Aggregate possible liquidated damage due to failure to meet specified contractual milestone dates, offshore oil and gas construction segment	153.8
Liquidated damage contingencies, accrued	24.0
Trigger dates, potential liquidated damages	2013-11
Outstanding obligation in 2013	98.0
Outstanding obligation in 2014	124.5
Outstanding obligation 2015	196.1
Outstanding obligation	$ 418.6

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Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Domestic Plan
Net Period Benefit Cost Assumptions [Line Items]
Interest cost	$ 11,831	$ 6,569	$ 11,998	$ 13,262
Expected return on plan assets	(16,153)	(8,905)	(19,153)	(17,905)
Recognized net actuarial loss and other	2,714	2,228	5,866	4,818
Net periodic benefit cost	(1,608)	(108)	(1,289)	175
TCN Plan
Net Period Benefit Cost Assumptions [Line Items]
Interest cost	467	461	934	922
Expected return on plan assets	(650)	(611)	(1,301)	(1,222)
Recognized net actuarial loss and other	508	447	1,015	893
Net periodic benefit cost	$ 325	$ 297	$ 648	$ 593

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Selected Financial Information Regarding Results of Operations of Charter Fleet Business (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total income from discontinued operations, net of tax		$ 3,497
Charter Fleet Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		8,184
Gain on disposal of discontinued operations	300	257
Income before provision for income taxes		3,240
Total income from discontinued operations, net of tax		$ 3,497

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Long-Term Debt and Notes Payable - Additional Information (Detail) (USD $)	6 Months Ended		6 Months Ended		6 Months Ended		6 Months Ended										1 Months Ended						6 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Mexico	Jun. 30, 2013 North Ocean Construction Financing North Ocean 102	Dec. 31, 2012 North Ocean Construction Financing North Ocean 102	Jun. 30, 2013 Maximum	Jun. 30, 2013 Maximum Amended Credit Agreement	Jun. 30, 2013 Minimum	Jun. 30, 2013 Base Rate	Jun. 30, 2013 Eurodollar rate	Jun. 30, 2013 Financial Letter of Credit	Jun. 30, 2013 Financial Letter of Credit Maximum	Jun. 30, 2013 Financial Letter of Credit Minimum	Jun. 30, 2013 Performance Letters of Credit	Jun. 30, 2013 Performance Letters of Credit Maximum	Jun. 30, 2013 Performance Letters of Credit Minimum	Jun. 30, 2013 Commitments	Sep. 30, 2010 Secured Debt North Ocean Construction Financing North Ocean 105 Installment	Jun. 30, 2013 Secured Debt North Ocean Construction Financing North Ocean 105	Dec. 31, 2012 Secured Debt North Ocean Construction Financing North Ocean 105	Jun. 30, 2013 Secured Debt Maximum Amended Credit Agreement	Sep. 30, 2010 Secured Debt Maximum North Ocean Construction Financing North Ocean 105	Apr. 20, 2012 Reimbursement Agreement	Jun. 30, 2013 Senior Unsecured Note Amended Credit Agreement	Jun. 30, 2013 Senior Unsecured Note Maximum Amended Credit Agreement	Jun. 30, 2013 Revolving Credit Facility	Jun. 30, 2013 Unsecured Debt
Debt Disclosure [Line Items]
Letters of credit aggregate borrowing capacity					$ 950,000,000
Credit facility, maturity date	Aug. 19, 2016
Leverage ratio of indebtedness to EBITDA					3.00	3.75														2.00				5.00
Principal amount of notes																							300
Interest on outstanding loan balance	Loans outstanding under the Credit Agreement bear interest at the borrower's option at either the Eurodollar rate plus a margin ranging from 1.50% to 2.50% per year or the base rate (the highest of the Federal Funds rate plus 0.50%, the 30-day Eurodollar rate plus 1.0%, or the administrative agent's prime rate) plus a margin ranging from 0.50% to 1.50% per year. The applicable margin for revolving loans varies depending on the credit ratings of the Credit Agreement.
Interest on loan outstanding, margin over Eurodollar rate					2.50%		1.50%	1.00%
Interest on loan outstanding, margin over Federal Fund rate								0.50%
Interest on loan outstanding, margin over base rate					1.50%		0.50%
Commitment fee on the unused portion of credit agreement					0.45%		0.20%
Letter of credit fee										1.75%	2.50%	1.50%	0.875%	1.25%	0.75%	0.25%
Revolving credit, borrowings outstanding																									0
Letters of credit outstanding amount																						109,000,000			265,800,000	116,400,000
Credit facility, current borrowing capacity																									684,200,000
Credit facility, applicable interest rate																									4.00%
Applicable margin								1.75%	0.75%
Notes payable			34,400,000	37,300,000
Notes payable, current			34,400,000	6,000,000														8,200,000	8,200,000
Debt description			The outstanding debt bears interest at a rate equal to the three-month LIBOR (which resets every three months) plus a margin of 3.315% and matures in January 2014.
Applicable margin for LIBOR borrowing			3.315%
Debt maturity date			2014-01
Percentage of debt guaranteed by JRMSA			50.00%
Secured debt																					69,400,000
Business acquisition percentage, interests acquired																	75.00%
Secured debt, applicable interest rate																	2.76%
Principal repayment																	The agreement provides for borrowings of up to $69.4 million, bearing interest at 2.76% per year, and requires principal repayment in 17 consecutive semi-annual installments, which commenced on October 1, 2012.
Number of consecutive semi-annual installments																	17
Borrowing outstanding																		61,300,000	65,400,000
Bonds issued related to JRMSA general agreement of indemnity		$ 46,200,000

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

NOTE 6—FAIR VALUE MEASUREMENTS

The following is a summary of our available-for-sale securities measured at fair value:

	Total at June 30, 2013		Level 1		Level 2		Level 3
	(Unaudited)
	(In thousands)
Mutual funds(1)	$	2,058	$	—	$	2,058	$	—
Commercial paper		9,893		—		9,893		—
Asset-backed securities and collateralized mortgage obligations(2)		8,092		—		2,190		5,902
Corporate notes and bonds(3)		1,001		—		1,001		—
Total	$	21,044	$	—	$	15,142	$	5,902

	Total at December 31, 2012		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	2,023	$	—	$	2,023	$	—
Commercial paper		29,737		—		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		—		2,134		6,343
Corporate notes and bonds		5,755		—		5,755		—
Total	$	45,992	$	—	$	39,649	$	6,343

(1) Various U.S. equities and other investments managed under mutual funds

(2) Asset-backed and mortgage-backed securities with maturities of up to 26 years

(3) Corporate notes and bonds with maturities of three years or less

Our Level 2 investments consist primarily of commercial paper, corporate notes and bonds, asset-backed commercial paper notes backed by a pool of mortgage-backed securities and mutual funds. The fair value of our Level 2 investments was determined using a market approach which is based on quoted prices and other information for similar or identical instruments.

Our Level 3 investment consists of asset-backed commercial paper notes backed by a pool of mortgage-backed securities. The fair value of this Level 3 investment was based on the calculation of an overall weighted-average valuation, using the prices of the underlying individual securities. Individual securities in the pool were valued based on market observed prices, where available. If market prices were not available, prices of similar securities backed by similar assets were used.

Changes in Level 3 Instrument

The following is a summary of the changes in our Level 3 instrument measured on a recurring basis for the three months and six months ended June 30, 2013 and June 30, 2012:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,157		$	6,177		$	6,343		$	6,030
Total realized and unrealized gains		18			456			228			898
Principal repayments		(273	)		(295	)		(669	)		(590	)
Balance at end of period	$	5,902		$	6,338		$	5,902		$	6,338

Unrealized Losses on Investments

Our net unrealized loss on investments was $1.9 million and $2.4 million at June 30, 2013 and December 31, 2012, respectively. The investments in an unrealized loss position for twelve months or longer are asset-backed and mortgage-backed obligations. These investments have generally shown a positive trend and continue to perform, and we currently do not have the intent to sell these securities before their anticipated recovery. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired as of June 30, 2013. The amount of investments in an unrealized loss position for less than twelve months was not significant for either of the periods presented. The following is a summary of our available-for-sale securities:

	Twelve Months or Greater
	Fair Value		Unrealized Losses
	(Unaudited) (In thousands)
June 30, 2013
Mutual funds	$	2,058	$	—
Commercial paper		9,893		—
Asset-backed securities and collateralized mortgage obligations		8,092		(1,659	)
Corporate notes and bonds		1,001		—
Total	$	21,044	$	(1,659	)

	Twelve Months or Greater
	Fair Value		Unrealized Losses
	(Unaudited) (In thousands)
December 31, 2012
Mutual funds	$	2,023	$	—
Commercial paper		29,737		—
Asset-backed securities and collateralized mortgage obligations		8,477		(2,376	)
Corporate notes and bonds		5,755		—
Total	$	45,992	$	(2,376	)

Other Financial Instruments

We used the following methods and assumptions in estimating our fair value disclosures for our other financial instruments:

Cash and restricted cash and cash equivalents. The carrying amounts that we have reported in the accompanying condensed consolidated balance sheets for cash, cash equivalents and restricted cash and cash equivalents approximate their fair values and are classified as Level 1 within the fair value hierarchy.

Short-term and long-term debt. The fair value of debt instruments is classified as Level 2 within the fair value hierarchy and is valued using a market approach based on quoted prices for similar instruments traded in active markets. Where quoted prices are not available, the income approach is used to value these instruments based on the present value of future cash flows discounted at estimated borrowing rates for similar debt instruments or on estimated prices based on current yields for debt issues of similar quality and terms.

Forward contracts. The fair value of forward contracts is classified as Level 2 within the fair value hierarchy and is valued using observable market parameters for similar instruments traded in active markets. Where quoted prices are not available, the income approach is used to value these forward contracts, which discounts future cash flows based on current market expectations and credit risk.

The estimated fair values of certain of our financial instruments are as follows:

	June 30, 2013						December 31, 2012
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	427,711		$	427,711		$	640,147		$	640,147
Restricted cash and cash equivalents	$	24,486		$	24,486		$	18,116		$	18,116
Investments	$	21,044		$	21,044		$	45,992		$	45,992
Debt	$	(95,635	)	$	(98,640	)	$	(102,708	)	$	(106,324	)
Forward contracts	$	(42,892	)	$	(42,892	)	$	21,434		$	21,434

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Retainages on Contracts (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Contractors [Abstract]
Retainages expected to be collected within one year	$ 64,839	$ 133,619
Retainages expected to be collected after one year	95,286	32,085
Total retainages	$ 160,125	$ 165,704

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Effects of Derivative Instruments on Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of loss recognized in other comprehensive income (loss)	$ (55,563)	$ (18,164)	$ (71,013)	$ (24,204)
Cost of operations
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Income reclassified from AOCI into income: effective portion	(2,845)	676	(831)	1,970
Gain (loss) on foreign currency - net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss) recognized in income ineffective portion and amount excluded from effectiveness testing	$ 7,291	$ 9,115	$ 4,442	$ 11,465

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SEGMENT REPORTING

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

SEGMENT REPORTING

NOTE 9—SEGMENT REPORTING

We report our financial results under a geographic-based reporting structure, which coincides with how our financial information is reviewed and evaluated on a regular basis by our chief operating decision maker. We operate in four primary operating segments, which consist of Asia Pacific, Atlantic, Caspian and the Middle East. The Caspian and Middle East operating segments are aggregated into the Middle East reporting segment due to the proximity of regions and similarities in the nature of services provided, economic characteristics and oversight responsibilities. Accordingly, we have three reporting segments consisting of Asia Pacific, Atlantic and the Middle East. We also report certain corporate and other non-operating activities under the heading “Corporate and Other.”

Reporting segments are measured based on operating income, which is defined as revenues reduced by total costs and expenses and equity in income (loss) of unconsolidated affiliates. Summarized financial information is shown in the following tables:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	229,829		$	338,464		$	555,891		$	635,499
Atlantic		186,554			110,304			334,738			209,908
Middle East		230,867			440,480			564,109			771,519
Total revenues	$	647,250		$	889,248		$	1,454,738		$	1,616,926
Operating income (loss):
Asia Pacific	$	(32,395	)	$	46,605		$	55,557		$	104,039
Atlantic		(48,651	)		(14,042	)		(65,061	)		(26,035	)
Middle East		(68,490	)		46,819			(86,999	)		81,554
Total operating income (loss)	$	(149,536	)	$	79,382		$	(96,503	)	$	159,558
Capital expenditures(2):
Asia Pacific	$	41,430		$	21,666		$	45,185		$	38,231
Atlantic		34,303			52,615			56,313			64,490
Middle East		27,391			10,935			37,943			26,711
Corporate and Other		3,702			1,694			5,034			2,229
Total capital expenditures	$	106,826		$	86,910		$	144,475		$	131,661
Depreciation and amortization:
Asia Pacific	$	4,507		$	5,235		$	9,537		$	10,092
Atlantic		5,181			6,111			11,986			13,295
Middle East		7,516			7,554			14,026			15,048
Corporate and Other		1,892			3,698			3,769			7,439
Total depreciation and amortization	$	19,096		$	22,598		$	39,318		$	45,874
Drydock amortization:
Asia Pacific	$	2,088		$	2,997		$	5,049		$	5,989
Atlantic		1,908			2,877			3,816			6,313
Middle East		385			621			1,066			1,305
Total drydock amortization	$	4,381		$	6,495		$	9,931		$	13,607

⁽¹⁾  Intersegment transactions included in revenues were not significant for any of the periods presented.

⁽²⁾  Total capital expenditures presents expenditures for which cash payments were made during the period. These amounts exclude approximately $10.8 million and $1.3 million in accrued capital expenditures for the six months ended June 30, 2013 and 2012, respectively.

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,176,446	$	1,402,923
Atlantic		561,633		536,734
Middle East		1,262,792		1,006,284
Corporate and other		195,076		387,686
Total assets	$	3,195,947	$	3,333,627

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DERIVATIVE FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

NOTE 5—DERIVATIVE FINANCIAL INSTRUMENTS

We enter into derivative financial instruments primarily to hedge certain firm purchase commitments and forecasted transactions denominated in foreign currencies. We record these contracts at fair value on our consolidated balance sheets. Depending on the hedge designation at the inception of the contract, the related gains and losses on these contracts are either: (1) deferred as a component of AOCI until the hedged item is recognized in earnings; (2) offset against the change in fair value of the hedged firm commitment through earnings; or (3) recognized immediately in earnings. At the inception and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows or fair value attributable to the hedged risk. We exclude from our assessment of effectiveness the portion of the fair value of the forward contracts attributable to the difference between spot exchange rates and forward exchange rates. The ineffective portion of a derivative’s change in fair value and any portion excluded from the assessment of effectiveness are immediately recognized in earnings. Gains and losses on derivative financial instruments that are immediately recognized in earnings are included as a component of gain (loss) on foreign currency—net in our condensed consolidated statements of income.

At June 30, 2013, the majority of our foreign currency forward contracts were designated as cash flow hedging instruments. In addition, we deferred approximately $58.3 million of net losses on these derivative financial instruments in AOCI, and we expect to reclassify approximately $15.1 million of deferred losses out of AOCI by June 30, 2014, as hedged items are recognized in earnings.

The notional value of our outstanding derivative contracts totaled $1.5 billion at June 30, 2013, with maturities extending through 2017. Of this amount, approximately $815.9 million is associated with various foreign currency expenditures we expect to incur on one of our Asia Pacific segment EPCI projects. These instruments consist of contracts to purchase or sell foreign-denominated currencies. At June 30, 2013, the fair value of these contracts was in a net liability position totaling $42.9 million.

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable—other	$	5,427	$	12,311
Other assets		1,498		13,770
Total asset derivatives	$	6,925	$	26,081
Accounts payable	$	15,539	$	3,604
Other liabilities		34,278		1,043
Total liability derivatives	$	49,817	$	4,647

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Amount of loss recognized in other comprehensive income (loss)	$	(55,563	)	$	(18,164	)	$	(71,013	)	$	(24,204	)
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	(2,845	)	$	676		$	(831	)	$	1,970
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain on foreign currency—net	$	7,291		$	9,115		$	4,442		$	11,465

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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data	Total		Common Stock	Capital In Excess of Par Value	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Stockholders' Equity	Non-Controlling Interests
Beginning Balance at Dec. 31, 2011	$ 1,733,712		$ 242,416	$ 1,375,976	$ 239,103	$ (95,827)	$ (102,030)	$ 1,659,638	$ 74,074
Beginning Balance (in shares) at Dec. 31, 2011			242,416,424
Net income	119,353				115,497			115,497	3,856
Other comprehensive income, net of tax	(8,409)	[1]					(8,510)	(8,510)	101
Exercise of stock options (in shares)			158,842
Exercise of stock options	716		159	557				716
Share vesting (in shares)			804,338
Share vesting			805	(805)
Purchase of treasury shares	(2,896)					(2,896)		(2,896)
Stock-based compensation charges	7,810			7,810				7,810
Noncontrolling interests distributions and other	(15,726)								(15,726)
Ending Balance at Jun. 30, 2012	1,834,560		243,380	1,383,538	354,600	(98,723)	(110,540)	1,772,255	62,305
Ending Balance (in shares) at Jun. 30, 2012			243,379,604
Beginning Balance at Dec. 31, 2012	1,952,105		243,442	1,391,271	445,756	(98,725)	(94,413)	1,887,331	64,774
Beginning Balance (in shares) at Dec. 31, 2012			243,442,156
Net income	(121,819)				(128,870)			(128,870)	7,051
Other comprehensive income, net of tax	(62,287)	[1]					(62,260)	(62,260)	(27)
Exercise of stock options (in shares)			44,862
Exercise of stock options	116		45	71				116
Share vesting (in shares)			441,554
Share vesting			442	(442)
Purchase of treasury shares	(1,083)					(1,083)		(1,083)
Stock-based compensation charges	10,110			9,486		624		10,110
Noncontrolling interests distributions and other	(11,243)								(11,243)
Ending Balance at Jun. 30, 2013	$ 1,765,899		$ 243,929	$ 1,400,386	$ 316,886	$ (99,184)	$ (156,673)	$ 1,705,344	$ 60,555
Ending Balance (in shares) at Jun. 30, 2013			243,928,572

[1] The tax impacts on amounts presented in other comprehensive income (loss) are not significant.

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Information about Operations in Different Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenues	$ 647,250	$ 889,248	$ 1,454,738	$ 1,616,926
Operating income	(149,536)	79,382	(96,503)	159,558
Capital expenditures	106,826	86,910	144,475	131,661
Depreciation and amortization	19,096	22,598	39,318	45,874
Drydock amortization	4,381	6,495	9,931	13,607
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Revenues	229,829	338,464	555,891	635,499
Operating income	(32,395)	46,605	55,557	104,039
Capital expenditures	41,430	21,666	45,185	38,231
Depreciation and amortization	4,507	5,235	9,537	10,092
Drydock amortization	2,088	2,997	5,049	5,989
Operating Segments | Atlantic
Segment Reporting Information [Line Items]
Revenues	186,554	110,304	334,738	209,908
Operating income	(48,651)	(14,042)	(65,061)	(26,035)
Capital expenditures	34,303	52,615	56,313	64,490
Depreciation and amortization	5,181	6,111	11,986	13,295
Drydock amortization	1,908	2,877	3,816	6,313
Operating Segments | Middle East Project
Segment Reporting Information [Line Items]
Revenues	230,867	440,480	564,109	771,519
Operating income	(68,490)	46,819	(86,999)	81,554
Capital expenditures	27,391	10,935	37,943	26,711
Depreciation and amortization	7,516	7,554	14,026	15,048
Drydock amortization	385	621	1,066	1,305
Operating Segments | Corporate and Other
Segment Reporting Information [Line Items]
Capital expenditures	3,702	1,694	5,034	2,229
Depreciation and amortization	$ 1,892	$ 3,698	$ 3,769	$ 7,439

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Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Fair Value Disclosures [Abstract]
Cash and cash equivalents, Carrying Value	$ 427,711	$ 640,147	$ 644,060	$ 570,854
Restricted cash and cash equivalents, Carrying Amount	24,486	18,116
Investments, Carrying Amount	21,044	45,992
Debt, Carrying Amount	(95,635)	(102,708)
Forward contracts, Carrying Amount	(42,892)	21,434
Cash and cash equivalents, Fair Value	427,711	640,147
Restricted cash and cash equivalents, Fair Value	24,486	18,116
Investments, Fair Value	21,044	45,992
Debt, Fair Value	(98,640)	(106,324)
Forward contracts, Fair Value	$ (42,892)	$ 21,434

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Components of Accumulated Other Comprehensive Income (Loss) included in Stockholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Unrealized holding gain (loss) on investment, Beginning balance	$ (1,915)	$ (3,706)	$ (2,316)	$ (4,402)
Other comprehensive income (loss)	40	431	441	1,127
Amounts reclassified from AOCI
Net current period other comprehensive income (loss)	40	431	441	1,127
Unrealized holding gain (loss) on investment, Ending balance	(1,875)	(3,275)	(1,875)	(3,275)
Deferred gain (loss) on derivatives, Beginning balance	(5,819)	(1,657)	11,735	3,088
Other comprehensive income (loss) before reclassification	(55,563)	(18,164)	(71,013)	(24,051)
Amounts reclassified from AOCI	3,066	1,107	962	2,249
Net current period other comprehensive income (loss)	(52,497)	(17,057)	(70,051)	(21,802)
Deferred gain (loss) on derivatives, Ending balance	(58,316)	(18,714)	(58,316)	(18,714)
Foreign currency gain (loss), Beginning balance	3,848	(9,325)	(3,366)	(12,438)
Other comprehensive income (loss) before reclassification	(6,734)	3,326	480	6,439
Amounts reclassified from AOCI
Net current period other comprehensive income (loss)	(6,734)	3,326	480	6,439
Foreign currency gain (loss), Ending balance	(2,886)	(5,999)	(2,886)	(5,999)
Defined benefit pension plans gain (loss), Beginning balance	(96,811)	(85,233)	(100,466)	(88,278)
Other comprehensive income (loss) before reclassification
Amounts reclassified from AOCI	3,215	2,681	6,870	5,726
Net current period other comprehensive income (loss)	3,215	2,681	6,870	5,726
Defined benefit pension plans gain (loss), Ending balance	(93,596)	(82,552)	(93,596)	(82,552)
Accumulated other comprehensive income, Beginning balance	(100,697)	(99,921)	(94,413)	(102,030)
Other comprehensive income (loss) before reclassification	(62,257)	(14,407)	(70,092)	(16,485)
Amounts reclassified from AOCI	6,281	3,788	7,832	7,975
Net current period other comprehensive income (loss)	(55,976)	(10,619)	(62,260)	(8,510)
Accumulated other comprehensive income, Ending balance	$ (156,673)	$ (110,540)	$ (156,673)	$ (110,540)

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2013

Contracts Receivables

A summary of contract receivables is as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	209,880		$	273,729
Completed contracts		61,450			38,858
Retainages		64,839			133,619
Unbilled		5,087			4,710
Less allowances		(22,531	)		(22,116	)
Accounts receivable—trade, net	$	318,725		$	428,800

Retainages on Contracts

The following is a summary of retainages on our contracts:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	64,839	$	133,619
Retainages expected to be collected after one year		95,286		32,085
Total retainages	$	160,125	$	165,704

Components of Contracts in Progress and Advance Billings on Contracts

A detail of the components of contracts in progress and advance billings on contracts is as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Costs incurred less costs of revenue recognized	$	83,354	$	65,321
Revenues recognized less billings to customers		540,576		494,833
Contracts in Progress	$	623,930	$	560,154

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Billings to customers less revenue recognized	$	467,049		$	394,352
Costs incurred less costs of revenue recognized		(165,623	)		(152,656	)
Advance Billings on Contracts	$	301,426		$	241,696

Components of Accumulated Other Comprehensive Income (Loss) Included in Stockholders' Equity

The components of AOCI included in stockholders’ equity are as follows:

	June 30, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,886	)	$	(3,366	)
Net loss on investments		(1,875	)		(2,316	)
Net gain (loss) on derivative financial instruments		(58,316	)		11,735
Unrecognized losses on benefit obligations		(93,596	)		(100,466	)
Accumulated other comprehensive loss	$	(156,673	)	$	(94,413	)

Reclassifications

Components of Accumulated Other Comprehensive Income (Loss) Included in Stockholders' Equity

The following tables present the components of AOCI and the amounts that were reclassified during the period:

For the three months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, March 31, 2013	$	(1,915	)	$	(5,819	)	$	3,848		$	(96,811	)	$	(100,697	)
Other comprehensive income (loss)		40			(55,563	)		(6,734	)		—			(62,257	)
Amounts reclassified from AOCI		—			3,066	(3)		—			3,215	(4)		6,281
Net current period other comprehensive income (loss)		40			(52,497	)		(6,734	)		3,215			(55,976	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the three months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)
Other comprehensive income		431			(18,164	)		3,326			—			(14,407	)
Amounts reclassified from AOCI		—			1,107	(3)		—			2,681	(4)		3,788
Net current period other comprehensive income		431			(17,057	)		3,326			2,681			(10,619	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

For the six months ended June 30, 2013	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,316	)	$	11,735		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss)		441			(71,013	)		480			—			(70,092	)
Amounts reclassified from AOCI		—			962	(3)		—			6,870	(4)		7,832
Net current period other comprehensive income (loss)		441			(70,051	)		480			6,870			(62,260	)
Balance, June 30, 2013	$	(1,875	)	$	(58,316	)	$	(2,886	)	$	(93,596	)	$	(156,673	)

For the six months ended June 30, 2012	Unrealized holding gain (loss) on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans gain (loss)(2)			Total
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income		1,127			(24,051	)		6,439			—			(16,485	)
Amounts reclassified from AOCI		—			2,249	(3)		—			5,726	(4)		7,975
Net current period other comprehensive income		1,127			(21,802	)		6,439			5,726			(8,510	)
Balance, June 30, 2012	$	(3,275	)	$	(18,714	)	$	(5,999	)	$	(82,552	)	$	(110,540	)

(1) Refer to Note 5 for additional details

(2) Refer to Note 4 for additional details

(3) Reclassified to cost of operations

(4) Reclassified to selling, general and administrative expenses

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

EARNINGS PER SHARE

NOTE 8—EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per common share:

	Three Months Ended June 30,					Six Months Ended June 30,
	2013			2012		2013			2012
	(Unaudited) (In thousands)
Income (loss) from continuing operations less noncontrolling interests	$	(149,423	)	$	52,739	$	(128,870	)	$	112,000
Income from discontinued operations, net of tax		—			—		—			3,497
Net income (loss) attributable to McDermott International, Inc.	$	(149,423	)	$	52,739	$	(128,870	)	$	115,497
Weighted average common shares (basic)		236,199,438			235,681,213		236,070,311			235,444,733
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		—			1,779,552		—			1,951,964
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		236,199,438			237,460,765		236,070,311			237,396,697
Basic earnings (loss) per share
Income (loss) from continuing operations less noncontrolling interests		(0.63	)		0.22		(0.55	)		0.48
Income from discontinued operations, net of tax		—			—		—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22		(0.55	)		0.49
Diluted earnings (loss) per share:
Income (loss) from continuing operations less noncontrolling interests		(0.63	)		0.22		(0.55	)		0.47
Income from discontinued operations, net of tax		—			—		—			0.01
Net income (loss) attributable to McDermott International, Inc.		(0.63	)		0.22		(0.55	)		0.49

(1) Approximately 2.9 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three months and six months ended June 30, 2013. Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three months and six months ended June 30, 2012, respectively.

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PENSION PLANS (Tables)

6 Months Ended

Jun. 30, 2013

Compensation And Retirement Disclosure [Abstract]

Net Periodic Benefit Cost

Net periodic benefit cost for the Domestic Plans and the TCN Plan includes the following components:

	Domestic Plans
	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Interest cost	$	11,831		$	6,569		$	11,998		$	13,262
Expected return on plan assets		(16,153	)		(8,905	)		(19,153	)		(17,905	)
Recognized net actuarial loss and other		2,714			2,228			5,866			4,818
Net periodic benefit cost	$	(1,608	)	$	(108	)	$	(1,289	)	$	175

	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
	(Unaudited) (In thousands)
Interest cost	$	467		$	461		$	934		$	922
Expected return on plan assets		(650	)		(611	)		(1,301	)		(1,222	)
Recognized net actuarial loss		508			447			1,015			893
Net periodic benefit cost	$	325		$	297		$	648		$	593

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ACQUISITION, DISPOSITIONS AND ATLANTIC RESTRUCTURING CHARGES (Tables)

6 Months Ended

Jun. 30, 2013

Discontinued Operations And Disposal Groups [Abstract]

Selected Financial Information Regarding Results of Operations

The following table presents selected financial information regarding the results of operations attributable to our former charter fleet business:

	Six Months Ended June 30, 2012
	(Unaudited) (In thousands)
Revenues	$	8,184
Gain on disposal of discontinued operations		257
Income before provision for income taxes		3,240
Income from discontinued operations, net of tax	$	3,497

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Document and Entity Information	6 Months Ended
	Jun. 30, 2013	Jul. 29, 2013
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Trading Symbol	MDR
Entity Registrant Name	MCDERMOTT INTERNATIONAL INC
Entity Central Index Key	0000708819
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		236,571,152

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LONG-TERM DEBT AND NOTES PAYABLE (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Comparison of Key Financial Covenants and Current Compliance

A comparison of the key financial covenants and compliance (prior to the amendment to the Credit Agreement effected in August 2013) is as follows:

	Required		Actual
Maximum leverage ratio		3.00		0.92
Minimum interest coverage ratio		4.00		17.19

Long-Term Debt Obligations

A summary of our long-term debt obligations are as follows:

	June 30, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Long-term debt consists of:
North Ocean 102 Construction Financing	$	34,361	$	37,349
North Ocean 105 Construction Financing		61,274		65,359
		95,635		102,708
Less: Amounts due within one year		42,531		14,146
Total long-term debt	$	53,104	$	88,562