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 March 31, 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 May 1, 2013 was 236,457,101.

McDERMOTT INTERNATIONAL, INC.

INDEX—FORM 10-Q

	PAGE
PART I—FINANCIAL INFORMATION
Item 1—Condensed Consolidated Financial Statements		3
Condensed Consolidated Statements of Income—(Unaudited) Three Months Ended March  31, 2013 and 2012		3
Condensed Consolidated Statements of Comprehensive Income—(Unaudited) Three Months Ended March  31, 2013 and 2012		4
Condensed Consolidated Balance Sheets—(Unaudited) March 31, 2013 and December 31, 2012		5
Condensed Consolidated Statements of Cash Flows—(Unaudited) Three Months Ended March  31, 2013 and 2012		6
Condensed Consolidated Statements of Equity—(Unaudited) Three Months Ended March  31, 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		23
Item 3—Quantitative and Qualitative Disclosures about Market Risk		33
Item 4—Controls and Procedures		33
PART II—OTHER INFORMATION
Item 1—Legal Proceedings		34
Item 1A—Risk Factors		34
Item 2—Unregistered Sales of Equity Securities and Use of Proceeds		34
Item 6—Exhibits		34
SIGNATURES		36

PART I—FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands, except share and per share amounts)
Revenues	$	807,488		$	727,678
Costs and Expenses:
Cost of operations		712,814			597,434
Selling, general and administrative expenses		52,226			46,611
Gain on asset disposals		(14,716	)		(226	)
Total costs and expenses		750,324			643,819
Equity in Loss of Unconsolidated Affiliates		(4,131	)		(3,683	)
Operating Income		53,033			80,176
Other Income (Expense):
Interest income		342			1,634
Gain (loss) on foreign currency—net		(2,526	)		9,441
Other income (expense)—net		782			(581	)
Total other income (expense)		(1,402	)		10,494
Income from continuing operations before provision for income taxes and noncontrolling interests		51,631			90,670
Provision for Income Taxes		27,313			28,743
Income from continuing operations before noncontrolling interests		24,318			61,927
Gain on disposal of discontinued operations		—			257
Income from discontinued operations, net of tax		—			3,240
Total income from discontinued operations, net of tax		—			3,497
Net Income		24,318			65,424
Less: Net Income Attributable to Noncontrolling Interests		3,765			2,666
Net Income Attributable to McDermott International, Inc.	$	20,553		$	62,758
Earnings per Common Share:
Basic:
Income from continuing operations, less noncontrolling interests		0.09			0.25
Income from discontinued operations, net of tax		—			0.01
Net income attributable to McDermott International, Inc.		0.09			0.27
Diluted:
Income from continuing operations, less noncontrolling interests		0.09			0.25
Income from discontinued operations, net of tax		—			0.01
Net income attributable to McDermott International, Inc.		0.09			0.26
Shares used in the computation of earnings per share:
Basic		235,941,185			235,208,252
Diluted		239,199,881			237,332,627

See accompanying notes to condensed consolidated financial statements.

3

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands)
Net Income	$	24,318		$	65,424
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs		3,655			3,045
Unrealized gain on investments		401			697
Translation adjustments		7,214			3,113
Unrealized loss on derivatives		(15,462	)		(5,887	)
Realized (gain) loss on derivatives		(2,104	)		1,294
Other comprehensive income, net of tax(1)		(6,296	)		2,262
Total Comprehensive Income	$	18,022		$	67,686
Less: Comprehensive Income Attributable to Noncontrolling Interests		3,753			2,819
Comprehensive Income Attributable to McDermott International, Inc.	$	14,269		$	64,867

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

See accompanying notes to condensed consolidated financial statements.

4

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2013			December 31, 2012
	(Unaudited) (In thousands, except share and per share amounts)
Assets
Current Assets:
Cash and cash equivalents	$	461,535		$	640,147
Restricted cash and cash equivalents		21,942			18,116
Accounts receivable—trade, net		443,182			428,800
Accounts receivable—other		65,561			75,461
Contracts in progress		544,404			560,154
Deferred income taxes		6,888			9,765
Assets held for sale		1,396			2,679
Other current assets		42,436			54,667
Total Current Assets		1,587,344			1,789,789
Property, Plant and Equipment		2,155,243			2,115,176
Less accumulated depreciation		(828,223	)		(833,385	)
Net Property, Plant and Equipment		1,327,020			1,281,791
Investments		18,936			26,750
Goodwill		41,202			41,202
Investments in Unconsolidated Affiliates		35,233			37,435
Assets held for sale		12,243			26,758
Other Assets		159,040			129,902
Total Assets	$	3,181,018		$	3,333,627
Liabilities and Equity
Current Liabilities:
Notes payable and current maturities of long-term debt	$	44,025		$	14,146
Accounts payable		302,250			400,007
Accrued liabilities		332,358			369,418
Advance billings on contracts		206,010			241,696
Deferred income taxes		16,027			10,758
Income taxes payable		70,425			76,986
Total Current Liabilities		971,095			1,113,011
Long-Term Debt		57,188			88,562
Self-Insurance		24,141			22,641
Pension Liability		24,757			25,069
Other Liabilities		136,949			132,239
Commitments and Contingencies
Stockholders’ Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 243,778,369 and 243,442,156 shares at March 31, 2013 and December 31, 2012, respectively		243,778			243,442
Capital in excess of par value		1,394,859			1,391,271
Retained earnings		466,309			445,756
Treasury stock, at cost, 7,359,501 and 7,574,903 shares at March 31, 2013 and December 31, 2012, respectively		(99,688	)		(98,725	)
Accumulated other comprehensive loss		(100,697	)		(94,413	)
Stockholders’ Equity—McDermott International, Inc.		1,904,561			1,887,331
Noncontrolling Interests		62,327			64,774
Total Equity		1,966,888			1,952,105
Total Liabilities and Equity	$	3,181,018		$	3,333,627

See accompanying notes to condensed consolidated financial statements.

5

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	24,318		$	65,424
Less: Income from discontinued operations, net of tax		—			3,497
Income from continuing operations		24,318			61,927
Non-cash items included in net income:
Depreciation and amortization		20,222			23,276
Drydock amortization		5,550			7,112
Equity in loss of unconsolidated affiliates		4,131			3,683
Gain on asset disposals		(14,716	)		(226	)
Benefit for deferred taxes		5,332			(4,131	)
Other non-cash items		2,391			3,803
Changes in assets and liabilities, net of effects from acquisitions and dispositions:
Accounts receivable		(6,573	)		50,017
Net contracts in progress and advance billings on contracts		(19,935	)		65,363
Accounts payable		(125,234	)		(55,292	)
Accrued and other current liabilities		(20,774	)		(10,040	)
Pension liability and accrued postretirement and employee benefits		(19,657	)		7,489
Other assets and liabilities		(42,170	)		19,880
TOTAL CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES—CONTINUING OPERATIONS		(187,115	)		172,861
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment		(37,649	)		(44,751	)
Increase in restricted cash and cash equivalents		(3,826	)		(2,870	)
Purchases of available-for-sale securities		(3,744	)		(40,319	)
Sales and maturities of available-for-sale securities		31,193			94,380
Proceeds from the sale and disposal of assets		35,621			226
Other investing activities		(4,596	)		(2,376	)
NET CASH PROVIDED BY INVESTING ACTIVITIES—CONTINUING OPERATIONS		16,999			4,290
NET CASH PROVIDED BY INVESTING ACTIVITIES—DISCONTINUED OPERATIONS		—			60,671
TOTAL CASH PROVIDED BY INVESTING ACTIVITIES		16,999			64,961
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment of debt		(1,494	)		(1,494	)
Distributions to noncontrolling interests		(6,200	)		(15,733	)
Other financing activities		(1,015	)		(1,784	)
TOTAL CASH USED IN FINANCING ACTIVITIES—CONTINUING OPERATIONS		(8,709	)		(19,011	)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH		213			(700	)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		(178,612	)		218,111
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD		640,147			570,854
CASH AND CASH EQUIVALENTS AT END OF PERIOD—CONTINUING OPERATIONS	$	461,535		$	788,965
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for:
Income taxes (net of refunds)	$	25,916		$	16,036

See accompanying notes to condensed consolidated financial statements.

6

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

	Common Stock				Capital In Excess of			Retained		Treasury			Accumulated Other Comprehensive			Stockholders’			Non- Controlling			Total
	Shares		Par Value		Par Value			Earnings		Stock			Income (Loss)			Equity			Interests			Equity
	(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		—		—		—			62,758		—			—			62,758			2,666			65,424
Other comprehensive income, net of tax		—		—		—			—		—			2,109			2,109			153			2,262
Exercise of stock options		129,998		130		422			—		—			—			552			—			552
Share vesting		538,676		539		(539	)		—		—			—			—			—			—
Purchase of treasury shares		—		—		—			—		(2,184	)		—			(2,184	)		—			(2,184	)
Stock-based compensation charges		—		—		3,294			—		—			—			3,294			—			3,294
Distributions to noncontrolling interests		—		—		—			—		—			—			—			(15,733	)		(15,733	)
Balance March 31, 2012		243,085,098	$	243,085	$	1,379,153		$	301,861	$	(98,011	)	$	(99,921	)	$	1,726,167		$	61,160		$	1,787,327
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		—		—		—			20,553		—			—			20,553			3,765			24,318
Other comprehensive income, net of tax		—		—		—			—		—			(6,284	)		(6,284	)		(12	)		(6,296	)
Exercise of stock options		18,549		18		54			—		—			—			72			—			72
Share vesting		317,664		318		(318	)		—		—			—			—			—			—
Purchase of treasury shares		—		—		—			—		(1,034	)		—			(1,034	)		—			(1,034	)
Stock-based compensation charges		—		—		3,852			—		71			—			3,923			—			3,923
Distributions to noncontrolling interests		—		—		—			—		—			—			—			(6,200	)		(6,200	)
Balance March 31, 2013		243,778,369	$	243,778	$	1,394,859		$	466,309	$	(99,688	)	$	(100,697	)	$	1,904,561		$	62,327		$	1,966,888

See accompanying notes to condensed consolidated financial statements.

7

McDERMOTT INTERNATIONAL, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

MARCH 31, 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.

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 8 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. 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 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.

8

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 $165.6 million relating to this project remains in backlog at March 31, 2013. This project contributed revenues and costs equally, totaling $5.3 million and $5.2 million for the three-month periods ended March 31, 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 execution and the start of work on a project, we could lose the ability to forecast cost 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 did not enter into any contracts that we accounted for under the completed contract method during the quarters ended March 31, 2013 and March 31, 2012.

Claims Revenue

We include certain unapproved claims in the applicable contract value when we have a legal basis to do so, we consider collection to be probable and the value can be reasonably estimated. Claim revenue, when recorded, is only recorded to the extent of associated costs in our condensed consolidated financial statements. The net amount of revenues and costs included in our estimates at completion (i.e., contract values) associated with such claims was $225.8 million and $71.0 million as of March 31, 2013 and March 31, 2012, 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 March 31, 2013 and 2012, $29.0 million and $10.0 million of revenues and costs are reflected in our condensed consolidated financial statements pertaining to claims. Our unconsolidated joint ventures also recorded $3.7 million and $4.0 million of net revenue and costs associated with claims for the three months ended March 31, 2013 and 2012, respectively. We continue to actively engage in negotiations with our customers regarding the currently unresolved 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.

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 productivity, unanticipated vessel repair requirements, pipeline lay rates or steel and other raw material prices. Increases in costs associated with our fixed-price 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 March 31, 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 five active projects in our backlog that are in loss positions at March 31, 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 in late 2013 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.

9

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. As of March 31, 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.

The following is a discussion of our most significant changes in estimates, which impacted operating income for the three months ended March 31, 2013 and 2012.

2013 Period

Operating income for the three months ended March 31, 2013 was impacted by changes in cost estimates relating to projects in each of our segments.

The Middle East segment was impacted by changes in estimates on five projects. In total, those five projects recognized approximately $7.7 million in project losses in the three months ended March 31, 2013, as a result of increases to the estimated costs to complete those projects of approximately $38.0 million. On one of those projects, we increased our estimated cost at completion by $17.5 million, which resulted in the recognition of a $5.4 million loss in the three months ended March 31, 2013, primarily due to changes in the project’s execution plan, which resulted in additional third-party construction vessel usage and marine downtime, cost overruns on offshore hook-up activities, and additional costs for project management-related activities. This project remains in a profitable position at March 31, 2013 and is estimated to be completed by the end of 2013.

On three of our other projects in the Middle East segment, we increased our estimated cost at completion by $16.7 million, which resulted in the recognition of only $1.8 million of project income in the three months ended March 31, 2013. The changes in estimated cost at completion were principally driven by cost overruns associated with marine equipment downtime, including productivity, hook-up and project management-related activities. Each of those projects was in a profitable position at March 31, 2013. Two of those projects are estimated to be completed by the end of 2013, and the remaining project is estimated to be completed during the first quarter of 2014.

On the remaining project in the Middle East segment, we recognized incremental costs of $4.1 million in the three months ended March 31, 2013, primarily due to cost overruns on marine installation activities. That project was in a loss position at March 31, 2013 and is estimated to be completed by the end of the second quarter of 2013.

The Atlantic segment was impacted by changes in estimates on two projects. On one of those projects, we recognized approximately $6.9 million of incremental project losses in the three months ended March 31, 2013, primarily due to declines in fabrication productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. The other project, which is substantially complete, recognized $2.4 million of cost savings as a result of efficiencies associated with fabrication activities.

The Asia Pacific segment benefited from certain changes in estimates, which resulted in a reduction of estimated costs at completion of approximately $14.0 million primarily due to efficiencies associated with the marine campaigns on two of our EPCI projects, one of which was completed in early 2013 and the other of which is expected to be completed by mid-2013. These benefits were partially offset by project charges recognized in the three months ended March 31, 2013 of approximately $4.1 million associated with cost overruns on support vessels on one of our subsea projects, which is currently in a loss position and is expected to be completed in late 2013.

2012 Period

Operating income for the three months ended March 31, 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 9. 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 March 31, 2013, all of our restricted cash was held in restricted foreign-entity accounts.

10

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:

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	239,823		$	273,729
Completed contracts		122,723			38,858
Retainages		98,042			133,619
Unbilled		4,710			4,710
Less allowances		(22,116	)		(22,116	)
Accounts receivable—trade, net	$	443,182		$	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:

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	98,042	$	133,619
Retainages expected to be collected after one year		56,297		32,085
Total retainages	$	154,339	$	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 March 31, 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 March 31, 2013 and December 31, 2012, respectively, no such allowance for doubtful accounts was recorded.

11

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 the Company’s 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 5 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 4 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 7 for our earnings per share computations.

12

Accumulated Other Comprehensive Loss

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

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	3,848		$	(3,366	)
Net loss on investments		(1,914	)		(2,316	)
Net gain (loss) on derivative financial instruments		(5,820	)		11,735
Unrecognized losses on benefit obligations		(96,811	)		(100,466	)
Accumulated other comprehensive loss	$	(100,697	)	$	(94,413	)

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

For the three months ended March 31, 2013	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,315	)	$	11,734		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss) before reclassification		401			(15,450	)		7,214			—			(7,835	)
Amounts reclassified from AOCI		—			(2,104	)(3)		—			3,655	(4)		1,551
Net current period other comprehensive income (loss)		401			(17,554	)		7,214			3,655			(6,284	)
Balance, March 31, 2013	$	(1,914	)	$	(5,820	)	$	3,848		$	(96,811	)	$	(100,697	)

For the three months ended March 31, 2012	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income before reclassification		696			(5,887	)		3,113			—			(2,078	)
Amounts reclassified from AOCI		—			1,142	(3)		—			3,045	(4)		4,187
Net current period other comprehensive income		696			(4,745	)		3,113			3,045			2,109
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)

(1) Refer to Note 4 for additional details.

(2) Refer to Note 3 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.

13

Recently Issued Accounting Standards

In February 2013, the Financial Accounting Standards Board (“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 AND DISPOSITIONS

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. 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 three of our multi-function marine vessels, specifically the Bold Endurance, DB 16 and DB 26. During the quarter ended March 31, 2013, we committed to a plan to sell another multi-function marine vessel, 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 several interested parties to sell the remaining vessels.

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:

	Three Months Ended March 31, 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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NOTE 3—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						TCN Plan
	Three Months Ended March 31,
	2013			2012			2013			2012
	(Unaudited)
	(In thousands)
Interest cost	$	167		$	6,693		$	467		$	461
Expected return on plan assets		(3,000	)		(9,000	)		(651	)		(611	)
Recognized net actuarial loss and other		3,152			2,590			507			446
Net periodic benefit cost	$	319		$	283		$	323		$	296

NOTE 4—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 March 31, 2013, the majority of our foreign currency forward contracts were designated as cash flow hedging instruments. In addition, we deferred approximately $6.0 million of net losses on these derivative financial instruments in AOCI, and we expect to reclassify approximately $4.0 million of deferred losses out of AOCI by March 31, 2014, as hedged items are recognized in earnings.

The notional value of our outstanding derivative contracts totaled $1.6 billion at March 31, 2013, with maturities extending through 2017. Of this amount, approximately $925.0 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 March 31, 2013, the fair value of these contracts was in a net asset position totaling $3.8 million.

15

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable—other	$	7,853	$	12,311
Other assets		10,643		13,770
Total asset derivatives	$	18,496	$	26,081
Accounts payable	$	10,134	$	3,604
Other liabilities		4,544		1,043
Total liability derivatives	$	14,678	$	4,647

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended March 31,
	2013			2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Amount of loss recognized in other comprehensive income	$	(15,450	)	$	(6,040	)
Income reclassified from AOCI into income: effective portion
Location
Cost of operations	$	2,014		$	1,294
Gain (loss) recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain (loss) on foreign currency—net	$	(2,849	)	$	2,350

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NOTE 5—FAIR VALUE MEASUREMENTS

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

	Total at March 31, 2013		Level 1		Level 2		Level 3
	(Unaudited)
	(In thousands)
Mutual funds(1)	$	2,058	$	—	$	2,058	$	—
Commercial paper		7,496		—		7,496		—
Asset-backed securities and collateralized mortgage obligations(2)		8,381		—		2,224		6,157
Corporate notes and bonds(3)		1,001		—		1,001		—
Total	$	18,936	$	—	$	12,779	$	6,157
	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 ended March 31, 2013 and March 31, 2012:

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,343		$	6,030
Total realized and unrealized gains		210			442
Principal repayments		(396	)		(295	)
Balance at end of period	$	6,157		$	6,177

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Unrealized Losses on Investments

Our net unrealized loss on investments was $1.9 million and $2.4 million at March 31, 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 March 31, 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)
March 31, 2013
Mutual funds	$	2,058	$	—
Commercial paper		7,496		—
Asset-backed securities and collateralized mortgage obligations		8,381		(2,001	)
Corporate notes and bonds		1,001		—
Total	$	18,936	$	(2,001	)
	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:

	March 31, 2013						December 31, 2012
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	461,535		$	461,535		$	640,147		$	640,147
Restricted cash and cash equivalents	$	21,942		$	21,942		$	18,116		$	18,116
Investments	$	18,936		$	18,936		$	45,992		$	45,992
Debt	$	(101,213	)	$	(104,975	)	$	(102,708	)	$	(106,324	)
Forward contracts	$	3,818		$	3,818		$	21,434		$	21,434

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NOTE 6—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 ended March 31, 2013 and March 31, 2012 is as follows:

	Three Months Ended March 31,
	2013		2012
	(Unaudited) (In thousands)
Stock Options	$	1,030	$	994
Restricted Stock Units		1,737		1,460
Performance Shares		1,156		840
Total	$	3,923	$	3,294

NOTE 7—EARNINGS PER SHARE

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

	Three Months Ended March 31,
	2013		2012
	(Unaudited)
	(In thousands, except share and per share amounts)
Income from continuing operations less noncontrolling interests	$	20,553	$	59,261
Income from discontinued operations, net of tax		—		3,497
Net income attributable to McDermott International, Inc.	$	20,553	$	62,758
Weighted average common shares (basic)		235,941,185		235,208,252
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		3,258,696		2,124,375
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		239,199,881		237,332,627
Basic earnings per share:
Income from continuing operations less noncontrolling interests		0.09		0.25
Income from discontinued operations, net of tax		—		0.01
Net income attributable to McDermott International, Inc.		0.09		0.27
Diluted earnings per share:
Income from continuing operations less noncontrolling interests		0.09		0.25
Income from discontinued operations, net of tax		—		0.01
Net income attributable to McDermott International, Inc.		0.09		0.26

(1) Approximately 2.9 million and 1.8 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 ended March 31, 2013 and 2012, respectively.

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NOTE 8—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 March 31,
	2013			2012
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	326,062		$	297,035
Atlantic		148,184			99,604
Middle East		333,242			331,039
Total revenues	$	807,488		$	727,678
Operating income:
Asia Pacific	$	87,952		$	57,434
Atlantic		(16,410	)		(11,993	)
Middle East		(18,509	)		34,735
Total operating income	$	53,033		$	80,176
Capital expenditures(2):
Asia Pacific	$	3,755		$	16,565
Atlantic		22,010			11,875
Middle East		10,552			15,776
Corporate and Other		1,332			535
Total capital expenditures	$	37,649		$	44,751
Depreciation and amortization:
Asia Pacific	$	5,030		$	4,857
Atlantic		6,805			7,184
Middle East		6,510			7,494
Corporate and Other		1,877			3,741
Total depreciation and amortization	$	20,222		$	23,276
Drydock amortization:
Asia Pacific	$	2,961		$	2,992
Atlantic		1,908			3,436
Middle East		681			684
Total drydock amortization	$	5,550		$	7,112

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

⁽²⁾  Total capital expenditures presents expenditures for which cash payments were made during the period. These amounts exclude approximately $34.0 million and $13.0 million in accrued capital expenditures for the three months ended March 31, 2013 and 2012, respectively.

20

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,196,298	$	1,402,923
Atlantic		570,347		536,734
Middle East		1,208,121		1,006,284
Corporate and other		206,252		387,686
Total assets	$	3,181,018	$	3,333,627

NOTE 9—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.

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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 March 31, 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 March 31, 2013, it is possible that we may incur liabilities for liquidated damages aggregating approximately $93.0 million, of which approximately $11.0 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 October 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 March 31, 2013, we had outstanding obligations related to our new vessel construction contracts on the LV 108 and DLV 2000 of $431.8 million in the aggregate, with $141.5 million, $228.6 million and $61.7 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;

• 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 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 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;

• 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;

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

• 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 financial and human resources legacy systems;

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

• 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

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. Pro forma results of operations have not been presented, as the effects of this transaction were not material to our condensed consolidated financial statements.

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Assets Held for Sale

We previously committed to a plan to sell three of our multi-function marine vessels, specifically the Bold Endurance, DB 16 and DB 26. In addition, during the quarter ended March 31, 2013, we committed to a plan to sell another multi-function marine vessel, 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 several interested parties to sell the remaining vessels.

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 March 31, 2013, it is possible that we may incur liabilities for liquidated damages aggregating to approximately $93.0 million, of which approximately $11.0 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 October 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 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 adopted accounting standards.

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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 8 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.

Atlantic Segment

Through our Atlantic segment, we serve the needs of customers, primarily in the United States, Brazil, Mexico, Trinidad and West 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, and our New Orleans office provides specialized marine engineering capabilities to support our global marine activities. The primary fabrication facilities for this segment are located in Morgan City, Louisiana and Altamira, Mexico.

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.

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Results of Operations

Selected Financial Data:

	Three Months Ended March 31,
	2013			2012
	(In thousands)
Revenues:
Asia Pacific	$	326,062		$	297,035
Atlantic		148,184			99,604
Middle East		333,242			331,039
Total Revenues	$	807,488		$	727,678
Cost of Operations		712,814			597,434
Selling, general and administrative expenses		52,226			46,611
Gain on asset disposals		(14,716	)		(226	)
Total costs and expenses		750,324			643,819
Equity in Loss of Unconsolidated Affiliates		(4,131	)		(3,683	)
Operating Income (Loss):
Asia Pacific	$	87,952		$	57,434
Atlantic		(16,410	)		(11,993	)
Middle East		(18,509	)		34,735
Total Operating Income	$	53,033		$	80,176
Other Income (Expense):
Interest income		342			1,634
Gain (loss) on foreign currency—net		(2,526	)		9,441
Other income (expense)—net		782			(581	)
Total Other Income (Expense)		(1,402	)		10,494
Income from continuing operations before provision for income taxes and noncontrolling interests		51,631			90,670
Provision for Income Taxes		27,313			28,743
Total Income from Discontinued Operations, Net of Tax		—			3,497
Net Income Attributable to Noncontrolling Interests		3,765			2,666
Net Income Attributable to McDermott International, Inc.	$	20,553		$	62,758

Three months ended March 31, 2013 vs. 2012

Revenues

Revenues increased approximately 11%, or $79.8 million, to $807.5 million in the three months ended March 31, 2013 compared to $727.7 million for the corresponding prior-year period, primarily attributable to increases in our Atlantic and Asia Pacific segments. Revenues in our Atlantic segment increased approximately 49%, or $48.6 million, to $148.2 million in the three months ended March 31, 2013 compared to $99.6 million in the three months ended March 31, 2012, influenced primarily by an increase in fabrication activities associated with project awards in the U.S. Gulf of Mexico and Mexico. Revenues in our Asia Pacific segment increased approximately 10%, or $29.0 million, to $326.1 million in the three months ended March 31, 2013 from $297.0 million in the corresponding prior-year period, driven largely by increased marine activity on three of our projects, along with increased fabrication activity on two of our other projects. This increase was partially offset by decreased activity on an EPCI project in Australia, which we completed during the quarter ended March 31, 2013. Revenues in our Middle East segment increased modestly compared to the three months ended March 31, 2012, primarily due to increased marine activities on several projects in Saudi Arabia.

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Cost of Operations

Cost of operations increased approximately 20%, or $115.4 million, to $712.8 million in the three months ended March 31, 2013 compared to $597.4 million for the corresponding prior-year period. The increase was attributable to increased project costs in our Middle East and Atlantic segments. Costs of operations in the Middle East segment increased $54.0 million, primarily as a result of cost overruns associated with marine installation activities and, to a lesser extent, fabrication activities on certain projects. The increase in project costs in the Atlantic segment of $50.0 million was driven largely by an increase in fabrication activities combined with increased marine costs due to lower marine asset utilization. The cost of operations in the Asia Pacific segment increased $11.0 million, primarily due to increased fabrication and marine activities, partially offset by efficiencies realized as a result of increased marine asset utilization. These cost of operations variances are discussed in more detail below in the discussion regarding operating income.

Operating Income

Operating income decreased approximately 34%, or $27.2 million, to $53.0 million in the three months ended March 31, 2013 compared to $80.2 million for the corresponding prior-year period, primarily attributable to decreases in our Middle East segment and, to a lesser extent, continued operating losses in our Atlantic segment. These operating losses were offset by increases in our Asia Pacific segment and, to a lesser extent, gains of approximately $12.5 million associated with vessel sales.

The Middle East segment reported an operating loss of $18.5 million in the three months ended March 31, 2013, as compared to operating income of $34.7 million for the corresponding prior-year period, a decrease of $53.2 million. The decrease was primarily attributable to a few significant factors. First, during the quarter ended March 31, 2012, one project in Saudi Arabia contributed approximately $20.0 million in operating income, with no amount being recognized in the quarter ended March 31, 2013, principally as a result of the project having been completed prior to the start of the first quarter of 2013. Additionally, the Middle East segment was impacted by changes in estimates on five projects. In total, those five projects recognized approximately $7.7 million in project losses in the three months ended March 31, 2013, as a result of increases to the estimated costs to complete these projects of approximately $38.0 million. On one of those projects, we increased our estimated cost at completion by $17.5 million, which resulted in the recognition of a $5.4 million project loss in the three months ended March 31, 2013, primarily due to changes in the project’s execution plan, which resulted in additional third-party construction vessel usage and marine downtime, cost overruns on offshore hook-up activities and additional costs for project management-related activities. This project remains in a profitable position at March 31, 2013 and is estimated to be completed by the end of 2013.

On three of our other projects in the Middle East segment, we increased our estimated cost at completion by $16.7 million, which resulted in the recognition of only $1.8 million of project income in the three months ended March 31, 2013, principally driven by cost overruns associated with marine equipment downtime, including productivity, hook-up and project management-related activities. Each of those projects was in a profitable position at March 31, 2013. Two of those projects are estimated to be completed by the end of 2013, and the remaining project is estimated to be completed during the first quarter of 2014. On the remaining project in the Middle East segment, we recognized incremental costs of $4.1 million in the three months ended March 31, 2013, primarily due to cost overruns on marine installation activities. That project was in a loss position at March 31, 2013 and is estimated to be completed by the end of the second quarter of 2013. These decreases in operating income were partially offset by $5.9 million of increases in operating income recognized in the three months ended March 31, 2013 as a result of activities on newly awarded projects.

Operating income in our Asia Pacific segment increased $30.5 million to $88.0 million in the three months ended March 31, 2013 from $57.4 million for the corresponding prior year period, primarily attributable to several factors. First, we recognized improvements from the completion of one of our EPCI projects, along with the finalization of change orders and, to a lesser extent, cost savings on another subsea project. Second, we realized cost savings of approximately $9.0 million, as compared to the three months ended March 31, 2012, as a result of higher marine vessel utilization and lower support costs. The increases were partially offset by (1) the completion of one of our EPCI projects, which did not contribute operating income in the first quarter of 2013, but contributed approximately $14.0 million of operating income in the three months ended March 31, 2012, and (2) increased cost estimates recognized in the three months ended March 31, 2013 of $4.1 million on one of our marine subsea projects.

The Atlantic segment recognized an operating loss of $16.4 million in the three months ended March 31, 2013, compared to an operating loss of $12.0 million in the three months ended March 31, 2012. This change was primarily due to changes in estimates on one project. On that project, we recognized approximately $6.9 million of incremental project losses in the three months ended March 31, 2013, primarily due to declines in fabrication productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. Those changes in estimates were partially offset by $2.4 million of cost savings on another project as a result of efficiencies associated with fabrication activities. That project is substantially complete.

The results of the Atlantic segment include two projects in Brazil that contributed revenues but no income in the three months ended March 31, 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 a significant level of uncertainty and, as a result, we can provide no assurance as to the expected operating margins for the year ending December 31, 2013.

We previously implemented various cost reduction measures in our Atlantic segment to better align our operations with anticipated business levels. However, we anticipate further changes to the operations of this segment, which if implemented, would have a significant impact on our results of operations and cash flows. Furthermore, until the uncertainties surrounding the projects in Brazil are clarified, and we successfully execute and, in certain cases, complete the U.S. and Mexico projects, short-term operating performance could be negatively impacted. As a result, we expect to continue to incur losses in our Atlantic segment in 2013.

Operating Margins

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 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.

Total operating margins were approximately 7% in the three months ended March 31, 2013 compared to 11% for the three months ended March 31, 2012. We experienced decreased operating margins in our Middle East segment in the three months ended

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March 31, 2013, largely as a result of increased project costs on the projects discussed above associated with lower marine and fabrication productivity levels, project delays and other various cost overruns, including hook-up costs and schedule changes on marine installation. Conversely, we experienced an increase in our Asia Pacific segment operating margins in the three months ended March 31, 2013, primarily due to improvements from the finalization of change orders, the recognition of the gain on the sale of the DB 26 and reduced support costs.

Other Items in Operating Income

Selling, general and administrative expenses increased $5.6 million to $52.2 million in the three months ended March 31, 2013 as compared to $46.6 million in the three months ended March 31, 2012, as a result of ongoing activities, particularly those associated with our outstanding bids and proposals and, to a lesser extent, costs incurred associated with the Deepsea acquisition.

Equity in loss of unconsolidated affiliates changed $0.4 million to a loss of $4.1 million for the three months ended March 31, 2013, as compared to a loss of $3.7 million in the three months ended March 31, 2012, primarily attributable to increased equity losses from two of our joint ventures.

Other Items

Results for the quarters ended March 31, 2013 and 2012 were not significantly impacted by interest income, expense or other expense, 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 (loss) on foreign currency—net decreased by $12.0 million to a loss of $2.5 million in the three months ended March 31, 2013 from a gain of $9.4 million in the three months ended March 31, 2012, primarily due to foreign currency gains of $0.3 million and losses related to derivative instruments and hedging activities of $2.8 million recognized during the three months ended March 31, 2013, as compared to foreign currency gains of $7.1 million and gains related to derivative instruments and hedging activities of $2.3 million recognized during the three months ended March 31, 2012.

During the quarter ended March 31, 2012, we entered into derivative contracts to mitigate currency exchange movements associated with various foreign currency expenditures we expect to incur on one of our Asia Pacific segment 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 EPCI 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 March 31, 2013, our derivative financial instruments consisted primarily of foreign currency forward contracts. The notional value of our outstanding derivative contracts totaled approximately $1.6 billion at March 31, 2013, with maturities extending through 2017. Of this amount, approximately $925.0 million is associated with various foreign currency expenditures we expect to incur on the Asia Pacific segment project.

Provision for Income Taxes

For the three months ended March 31, 2013, the provision for income taxes decreased $1.4 million to $27.3 million, while income before provision for income taxes decreased $39.0 million to $51.6 million. As a result, our effective tax rate for the three months ended March 31, 2013 was approximately 53%, as compared to 32% for the three months ended March 31, 2012. The increase in the effective tax rate was primarily attributable to the mix of earnings across jurisdictions. The 2013 effective tax rate increased because of taxes on gross revenues (instead of income) in Azerbaijan and Indonesia, as well as losses in jurisdictions for which we do not expect to receive a tax benefit (United Arab Emirates, Brazil and the United States).

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Discontinued Operations and Noncontrolling Interests

Total income from discontinued operations, net of tax decreased by $3.5 million in the three months ended March 31, 2013 as compared to the three months ended March 31, 2012. On March 19, 2012, we completed the sale of our former charter fleet business for cash consideration of approximately $61.0 million, resulting in a gain on the sale of approximately $0.3 million.

Net income attributable to noncontrolling interests increased by $1.1 million to $3.8 million in the three months ended March 31, 2013 compared to $2.7 million for the three months ended March 31, 2012, primarily due to increased activity and higher net income at our joint ventures.

Backlog

Backlog represents the dollar amount of revenues we expect to recognize in the future from contracts awarded and in progress. 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. We generally include expected revenues of contracts in our backlog when we enter into a written confirmation with our customers. We do not include expected revenues of contracts related to unconsolidated joint ventures in our backlog. 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.

Of the March 31, 2013 backlog amount of $5.3 billion, approximately $428.9 million relates to five active projects that are in loss positions, whereby future revenues are expected to be equal to costs when recognized. Included in this amount is approximately $397.0 million attributable to two projects. Approximately $202.0 million is associated with a marine project in our Asia Pacific segment, which we expect to complete in late 2013, and approximately $195.0 million pertains to a five-year charter in Brazil, which we began in early 2012 in our Atlantic segment. 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. Additionally, we have a project in the Atlantic segment that we are accounting for under our deferred profit recognition policy, representing $165.6 million of the March 31, 2013 backlog.

	March 31, 2013				December 31, 2012
	(Dollars in millions)
Asia Pacific	$	2,778	52	%	$	3,003	59	%
Atlantic		891	17	%		979	20	%
Middle East		1,629	31	%		1,085	21	%
Total Backlog	$	5,298	100	%	$	5,067	100	%

Of the March 31, 2012 backlog, we expect to recognize revenues as follows:

	2013		2014		Thereafter
	(In millions)
Total Backlog	$	2,119	$	1,751	$	1,428

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 (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.

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 three months ended March 31, 2013 were $37.7 million, as compared to $44.8 million for the three months ended March 31, 2012. Capital expenditures for the three months ended March 31, 2013 were primarily attributable to the construction of the Lay Vessel 108 (“LV 108”) and the Lay Vessel North Ocean 105 (“NO 105”), 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 three months ended March 31, 2012 were primarily attributable to the construction and upgrade of the capabilities of the NO 105 and the North Ocean 102 (“NO 102”), as well as other upgrades to other marine vessels in our fleet.

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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 $201.8 million to $502.4 million at March 31, 2013 from $704.3 million at December 31, 2012, primarily due to a decrease in the net amount of contracts in progress and advanced billings on contracts and a decrease in accounts payable.

At March 31, 2013, we had current restricted cash and cash equivalents totaling $21.9 million, all of which was held in restricted foreign-entity accounts.

At March 31, 2013, we had investments with a fair value of $18.9 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 March 31, 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 improved by $114.3 million to $132.8 million at March 31, 2013 from $18.5 million at December 31, 2012, primarily due to the change in the amount of accrued liabilities and accounts payable.

Cash Flow Activities—Continuing Operations

Operating activities. Our net cash used in operating activities was $187.1 million in the three months ended March 31, 2013, compared to net cash provided by operating activities of $172.9 million in the three months ended March 31, 2012. This change was primarily attributable to a decrease in net contracts in progress and advance billings on contracts, a decrease in our accounts payable balance and fewer collections on accounts receivable balances.

Investing activities. Our net cash provided by investing activities was $17.0 million in the three months ended March 31, 2013, compared to cash provided in investing activities of $4.3 million in the three months ended March 31, 2012. This change was primarily attributable to proceeds associated with vessel sales and a decrease in the sales and purchases of available-for-sale securities.

Financing activities. Our net cash used in financing activities was $8.7 million in the three months ended March 31, 2013 as compared to net cash used in financing activities of $19.0 million in the three months ended March 31, 2012. The change was primarily attributable to reduced distributions to noncontrolling interests during the quarter ended March 31, 2013.

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.

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. The Credit Agreement contains customary financial covenants relating to leverage and interest coverage and includes covenants that restrict, among other things, debt incurrence, liens, investments, acquisitions, asset dispositions, dividends, prepayments of subordinated debt, mergers and capital expenditures. At March 31, 2013, we were in compliance with our covenant requirements.

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

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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, we paid certain up-front 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 March 31, 2013, there were no borrowings outstanding, and letters of credit issued under the Credit Agreement totaled $257.1 million. At March 31, 2013, there was $692.9 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 March 31, 2013. Had there been any such borrowings at March 31, 2013, the applicable base interest rate would have been approximately 4% per annum. In addition, we had $116.3 million in outstanding unsecured bilateral letters of credit at March 31, 2013.

At March 31, 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 have consolidated notes payable of $35.9 million and $37.3 million on our consolidated balance sheets at March 31, 2013 and December 31, 2012, respectively, of which $35.9 million and $6.0 million is classified as current notes payable at March 31, 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 $65.4 million in borrowings outstanding under this agreement, of which $8.2 million was classified as current notes payable at March 31, 2013 and December 31, 2012.

ANZ Reimbursement Agreement

On April 20, 2012, McDermott and one of its wholly owned subsidiaries, McDermott Australia Pte. 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.

CMO Financing

In November 2012, Construção e Montagem Offshore, S.A., a joint venture in which we have a 40% interest, entered into a financing arrangement in connection with a plan to construct a fabrication facility designed primarily to construct and integrate FPSO modules in Brazil. We may in the future provide collateral and/or a guarantee, pursuant to the terms of the financing arrangement. The arrangement is contingent upon a number of matters, and there were no borrowings or guarantees outstanding at March 31, 2013.

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 March 31, 2013, the aggregate principal amount of bonds issued under these arrangements totaled $45.4 million.

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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 March 31, 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 March 31, 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 9 to our unaudited condensed consolidated financial statements in Part I of this report, which we incorporate by reference into this Item.

Item 1A. Risk Factors

The following discussion updates the risk factor disclosure in “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2012, as updated by the risk factors in “Item 1A. Risk Factors” in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2013.

The loss of the services of one or more of our key personnel, or our failure to attract, assimilate and retain trained personnel at a competitive cost, or decreased productivity of such personnel, could disrupt our operations and result in loss of revenues.

Our success depends on the continued active participation of our executive officers and key operating personnel. The unexpected loss of the services of any one of these persons could adversely affect our operations.

Our operations require the services of employees having the technical training and experience necessary to obtain the proper operational results. As such, our operations depend, to a considerable extent, on the continuing availability and productivity of such personnel. If we should suffer any material loss of personnel to competitors, have decreased labor productivity of employed personnel for any reason, or be unable to employ additional or replacement personnel with the requisite level of training and experience to adequately operate our businesses, our operations could be adversely affected. A significant increase in the wages paid by other employers could result in a reduction in our workforce, increases in wage rates, or both. Our industry is currently experiencing high demand for the services of employees and escalating wage rates. If any of these events occurred for a significant period of time, our financial condition, results of operations and cash flows could be adversely impacted.

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 March 31, 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
January 1—January 31, 2013		167	$	11.02	not applicable	not applicable
February 1—February 28, 2013		—		—	not applicable	not applicable
March 1—March 31, 2013		98,011		10.69	not applicable	not applicable
Total		98,178	$	10.52	not applicable	not applicable

In March 2013, as part of the consideration for our acquisition of Deepsea, we delivered an aggregate of 313,580 shares of MII common stock (out of treasury) to the sellers in the transaction. In transferring the shares of common stock, we relied on the exemption from registration provided by Section 4(2) of the Securities Act of 1933, as amended, for transactions not involving a public offering.

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. 2 and Consent, dated as of March 25, 2013, entered into by and among 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 and collateral agent (incorporated by reference to Exhibit 4.1 to McDermott International, Inc.’s Current Report on Form 8-K filed on March 25, 2013 (file No. 1-08430)).
10.1*	Form of 2009 LTIP 2013 Performance Share Grant Agreement (incorporated by reference to Exhibit 10.32 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.2*	Form of 2009 LTIP 2013 Restricted Stock Unit Grant Agreement (incorporated by reference to Exhibit 10.33 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).

34

Exhibit Number	Description
10.3*	Form of 2009 LTIP 2013 Stock Option Grant Agreement (incorporated by reference to Exhibit 10.34 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.4*	Form of 2009 LTIP March 5, 2013 Retention Restricted Stock Unit Grant Agreement (incorporated by reference to Exhibit 10.35 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.5	Form of 2013 Non-Executive Director Restricted Stock Grant Letter.
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

35

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)

May 8, 2013

36

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. 2 and Consent, dated as of March 25, 2013, entered into by and among 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 and collateral agent (incorporated by reference to Exhibit 4.1 to McDermott International, Inc.’s Current Report on Form 8-K filed on March 25, 2013 (file No. 1-08430)).
10.1*	Form of 2009 LTIP 2013 Performance Share Grant Agreement (incorporated by reference to Exhibit 10.32 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.2*	Form of 2009 LTIP 2013 Restricted Stock Unit Grant Agreement (incorporated by reference to Exhibit 10.33 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.3*	Form of 2009 LTIP 2013 Stock Option Grant Agreement (incorporated by reference to Exhibit 10.34 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.4*	Form of 2009 LTIP March 5, 2013 Retention Restricted Stock Unit Grant Agreement (incorporated by reference to Exhibit 10.35 to McDermott International, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2012 (File No. 1-08430)).
10.5	Form of 2013 Non-Executive Director Restricted Stock Grant Letter.
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-10.5

Exhibit 10.5

May     , 2013

PERSONAL & CONFIDENTIAL

[Director]

Board of Directors

McDermott International, Inc.

RE: RESTRICTED STOCK AWARD

Dear [Director]:

I am pleased to advise you that the Compensation Committee of the Board of Directors (the “Committee”) of McDermott International, Inc. (the “Company”) approved a grant to you (the “Grant”) of [l] shares of restricted stock under the 2009 McDermott International, Inc. Long-Term Incentive Plan (the “Plan”) on May 13, 2013 (the “Grant Date”). A copy of the Prospectus relating to the Plan, which includes a copy of the Plan, has previously been made available to you. The restricted stock award will have no Period of Restriction (as defined in the Plan), and the restrictions on the Grant will lapse on the Grant Date.

Restricted Stock Award. On the Grant Date, you will have the right to be issued the number of shares of Common Stock of the Company set forth above. Such shares will be issued to you in book-entry form in an account in your name with our transfer agent, Computershare, absent other instructions from you, subject to the terms and conditions of the Plan.

Tax Consequences. You are solely responsible for the taxes associated with the Grant, and you should consult with and rely on your own tax advisor, accountant or legal advisor as to the tax consequences to you of the Grant. A general description of the tax consequences relating to the type of award provided through the Grant is included in the Prospectus.

Securities and Exchange Commission Requirements. Because you are a Section 16 insider, this type of transaction must be reported on a Form 4 before the end of the second (2^nd) business day following the Grant Date. Please be aware that if you are going to reject the Grant, you should do so as soon as possible to avoid potential Section 16 liability. Please advise Kim Wolford and Dennis Edge immediately by e-mail, fax or telephone call if you intend to reject this grant.

Absent such notice of rejection, we will prepare and file the required Form 4 on your behalf (pursuant to your standing authorization for us to do so) within the required two business day deadline.

-2-

You are also deemed to be an “affiliate” for purposes of Rule 144 under the Securities Act of 1933, as amended, and accordingly subject to Rule 144. Rule 144 is applicable only when the shares are sold, so you need not take any action under Rule 144 at this time.

Other Information. If you have any questions concerning the Grant, please do not hesitate to contact Dennis Edge at 281/870-7342.

Please acknowledge receipt and acceptance of all of the aforesaid by signing both this letter and the duplicate copy enclosed and returning one of them in the pre-paid envelope provided and addressed to the Company at 757 N. Eldridge Parkway, Houston, Texas 77079, attention of Dennis Edge, and marked “Personal and Confidential” within sixty (60) days from the date hereof.

Very truly yours,

McDERMOTT INTERNATIONAL, INC.

Stephen M. Johnson

President and CEO

ACCEPTED:

	Date:
SIGNATURE

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 March 31, 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.

May 8, 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 March 31, 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.

May 8, 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 March 31, 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: May 8, 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 March 31, 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: May 8, 2013

/s/ Perry L. Elders

Perry L. Elders

Senior Vice President and Chief Financial Officer

XML

Changes in Level Three Instrument Measured on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Changes In Level 3 Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Balance at beginning of period	$ 6,343	$ 6,030
Total realized and unrealized gains	210	442
Principal repayments	(396)	(295)
Balance at end of period	$ 6,157	$ 6,177

XML

Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 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	93.0
Liquidated damage contingencies, accrued	11.0
Trigger dates, potential liquidated damages	2013-10
Outstanding obligation in 2013	141.5
Outstanding obligation in 2014	228.6
Outstanding obligation 2015	61.7
Outstanding obligation	$ 431.8

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Information about Operations in Different Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$ 807,488	$ 727,678
Operating income	53,033	80,176
Capital expenditures	37,649	44,751
Depreciation and amortization	20,222	23,276
Asia Pacific
Segment Reporting Information [Line Items]
Revenues	326,062	297,035
Operating income	87,952	57,434
Capital expenditures	3,755	16,565
Depreciation and amortization	5,030	4,857
Atlantic
Segment Reporting Information [Line Items]
Revenues	148,184	99,604
Operating income	(16,410)	(11,993)
Capital expenditures	22,010	11,875
Depreciation and amortization	6,805	7,184
Middle East
Segment Reporting Information [Line Items]
Revenues	333,242	331,039
Operating income	(18,509)	34,735
Capital expenditures	10,552	15,776
Depreciation and amortization	6,510	7,494
Corporate and Other
Segment Reporting Information [Line Items]
Capital expenditures	1,332	535
Depreciation and amortization	1,877	3,741
Drydock
Segment Reporting Information [Line Items]
Depreciation and amortization	5,550	7,112
Drydock | Asia Pacific
Segment Reporting Information [Line Items]
Depreciation and amortization	2,961	2,992
Drydock | Atlantic
Segment Reporting Information [Line Items]
Depreciation and amortization	1,908	3,436
Drydock | Middle East
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 681	$ 684

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Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Domestic Plan
Net Period Benefit Cost Assumptions [Line Items]
Interest cost	$ 167	$ 6,693
Expected return on plan assets	(3,000)	(9,000)
Recognized net actuarial loss and other	3,152	2,590
Net periodic benefit cost	319	283
TCN Plan
Net Period Benefit Cost Assumptions [Line Items]
Interest cost	467	461
Expected return on plan assets	(651)	(611)
Recognized net actuarial loss and other	507	446
Net periodic benefit cost	$ 323	$ 296

XML

SEGMENT REPORTING (Tables)

3 Months Ended

Mar. 31, 2013

Information about Operations in Different Segments

Summarized financial information is shown in the following tables:

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	326,062		$	297,035
Atlantic		148,184			99,604
Middle East		333,242			331,039
Total revenues	$	807,488		$	727,678
Operating income:
Asia Pacific	$	87,952		$	57,434
Atlantic		(16,410	)		(11,993	)
Middle East		(18,509	)		34,735
Total operating income	$	53,033		$	80,176
Capital expenditures(2):
Asia Pacific	$	3,755		$	16,565
Atlantic		22,010			11,875
Middle East		10,552			15,776
Corporate and Other		1,332			535
Total capital expenditures	$	37,649		$	44,751
Depreciation and amortization:
Asia Pacific	$	5,030		$	4,857
Atlantic		6,805			7,184
Middle East		6,510			7,494
Corporate and Other		1,877			3,741
Total depreciation and amortization	$	20,222		$	23,276
Drydock amortization:
Asia Pacific	$	2,961		$	2,992
Atlantic		1,908			3,436
Middle East		681			684
Total drydock amortization	$	5,550		$	7,112

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

⁽²⁾  Total capital expenditures presents expenditures for which cash payments were made during the period. These amounts exclude approximately $34.0 million and $13.0 million in accrued capital expenditures for the three months ended March 31, 2013 and 2012, respectively.

Information about Segment Assets by Country

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,196,298	$	1,402,923
Atlantic		570,347		536,734
Middle East		1,208,121		1,006,284
Corporate and other		206,252		387,686
Total assets	$	3,181,018	$	3,333,627

XML

Total Stock-Based Compensation Expense Recognized (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	$ 3,923	$ 3,294
Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	1,030	994
Restricted stock units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	1,737	1,460
Performance and deferred stock units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	$ 1,156	$ 840

XML

Available-for-Sale Securities Measured at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 18,936	$ 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	7,496	29,737
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	8,381	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	12,779	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	7,496	29,737
Level 2 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,224	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	6,157	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	6,157	6,343
Level 3 | Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities

XML

Information about Segment Assets by Country (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total assets	$ 3,181,018	$ 3,333,627
Asia Pacific
Segment Reporting Information [Line Items]
Assets, continuing operations	1,196,298	1,402,923
Atlantic
Segment Reporting Information [Line Items]
Assets, continuing operations	570,347	536,734
Middle East
Segment Reporting Information [Line Items]
Assets, continuing operations	1,208,121	1,006,284
Corporate and Other
Segment Reporting Information [Line Items]
Assets, continuing operations	$ 206,252	$ 387,686

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ACQUISITION AND DISPOSITIONS

3 Months Ended

Mar. 31, 2013

ACQUISITION AND DISPOSITIONS

NOTE 2—ACQUISITION AND DISPOSITIONS

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. 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 three of our multi-function marine vessels, specifically the Bold Endurance, DB 16 and DB 26. During the quarter ended March 31, 2013, we committed to a plan to sell another multi-function marine vessel, 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 several interested parties to sell the remaining vessels.

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:

	Three Months Ended March 31, 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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Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share Disclosure [Line Items]
Income from continuing operations less noncontrolling interests	$ 20,553	$ 59,261
Total income from discontinued operations, net of tax		3,497
Net income attributable to McDermott International, Inc.	$ 20,553	$ 62,758
Weighted average common shares (basic)	235,941,185	235,208,252
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)	3,258,696	2,124,375
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)	239,199,881	237,332,627
Basic earnings per share:
Income from continuing operations less noncontrolling interests	$ 0.09	$ 0.25
Income from discontinued operations, net of tax		$ 0.01
Net income attributable to McDermott International, Inc.	$ 0.09	$ 0.27
Diluted earnings per share:
Income from continuing operations less noncontrolling interests	$ 0.09	$ 0.25
Income from discontinued operations, net of tax		$ 0.01
Net income attributable to McDermott International, Inc.	$ 0.09	$ 0.26

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Accumulated Other Comprehensive Loss included in Stockholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments	$ 3,848	$ (3,366)	$ (9,325)	$ (12,438)
Net loss on investments	(1,914)	(2,316)	(3,706)	(4,402)
Net gain (loss) on derivative financial instruments	(5,820)	11,735	(1,657)	3,088
Unrecognized losses on benefit obligations	(96,811)	(100,466)	(85,233)	(88,278)
Accumulated other comprehensive loss	$ (100,697)	$ (94,413)	$ (99,921)	$ (102,030)

XML

Retainages on Contracts (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages expected to be collected within one year	$ 98,042	$ 133,619
Retainages expected to be collected after one year	56,297	32,085
Total retainages	$ 154,339	$ 165,704

XML

Earnings Per Share - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share Disclosure [Line Items]
Antidilutive securities excluded from earnings per share computation, shares	2.9	1.8

XML

Components of Accumulated Other Comprehensive Income (Loss) included in Stockholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized holding loss on investment, Beginning balance	$ (2,316)	$ (4,402)
Other comprehensive income (loss) before reclassification	401	696
Amounts reclassified from AOCI
Net current period other comprehensive income (loss)	401	696
Unrealized holding loss on investment, Ending balance	(1,914)	(3,706)
Deferred gain (loss) on derivatives, Beginning balance	11,735	3,088
Other comprehensive income (loss) before reclassification	(15,450)	(5,887)
Amounts reclassified from AOCI	(2,104)	1,142
Net current period other comprehensive income (loss)	(17,554)	(4,745)
Deferred gain (loss) on derivatives, Ending balance	(5,820)	(1,657)
Foreign currency gain (loss), Beginning balance	(3,366)	(12,438)
Other comprehensive income (loss) before reclassification	7,214	3,113
Amounts reclassified from AOCI
Net current period other comprehensive income (loss)	7,214	3,113
Foreign currency gain (loss), Ending balance	3,848	(9,325)
Defined benefit pension plans, Beginning balance	(100,466)	(88,278)
Other comprehensive income (loss) before reclassification
Amounts reclassified from AOCI	3,655	3,045
Net current period other comprehensive income (loss)	3,655	3,045
Defined benefit pension plans, Ending balance	(96,811)	(85,233)
Accumulated other comprehensive income, Beginning balance	(94,413)	(102,030)
Other comprehensive income (loss) before reclassification	(7,835)	(2,078)
Amounts reclassified from AOCI	1,551	4,187
Net current period other comprehensive income (loss)	(6,284)	2,109
Accumulated other comprehensive income, Ending balance	$ (100,697)	$ (99,921)

XML

Acquisition and Dispositions - Additional Information (Detail) (USD $)	3 Months Ended					12 Months Ended		1 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Multi Function Support Vessel Vessel	Mar. 31, 2013 Charter Fleet Business	Mar. 31, 2012 Charter Fleet Business	Dec. 31, 2011 Charter Fleet Business	Mar. 19, 2012 Charter Fleet Business Vessel	Mar. 19, 2012 Secunda International Limited 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			3
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		257,000		300,000	257,000
Write-down of charter fleet business						$ 22,000,000

XML

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2013

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.

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 8 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. 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 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.

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 $165.6 million relating to this project remains in backlog at March 31, 2013. This project contributed revenues and costs equally, totaling $5.3 million and $5.2 million for the three-month periods ended March 31, 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 execution and the start of work on a project, we could lose the ability to forecast cost 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 did not enter into any contracts that we accounted for under the completed contract method during the quarters ended March 31, 2013 and March 31, 2012.

Claims Revenue

We include certain unapproved claims in the applicable contract value when we have a legal basis to do so, we consider collection to be probable and the value can be reasonably estimated. Claim revenue, when recorded, is only recorded to the extent of associated costs in our condensed consolidated financial statements. The net amount of revenues and costs included in our estimates at completion (i.e., contract values) associated with such claims was $225.8 million and $71.0 million as of March 31, 2013 and March 31, 2012, 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 March 31, 2013 and 2012, $29.0 million and $10.0 million of revenues and costs are reflected in our condensed consolidated financial statements pertaining to claims. Our unconsolidated joint ventures also recorded $3.7 million and $4.0 million of net revenue and costs associated with claims for the three months ended March 31, 2013 and 2012, respectively. We continue to actively engage in negotiations with our customers regarding the currently unresolved 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.

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 productivity, unanticipated vessel repair requirements, pipeline lay rates or steel and other raw material prices. Increases in costs associated with our fixed-price 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 March 31, 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 five active projects in our backlog that are in loss positions at March 31, 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 in late 2013 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. As of March 31, 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.

The following is a discussion of our most significant changes in estimates, which impacted operating income for the three months ended March 31, 2013 and 2012.

2013 Period

Operating income for the three months ended March 31, 2013 was impacted by changes in cost estimates relating to projects in each of our segments.

The Middle East segment was impacted by changes in estimates on five projects. In total, those five projects recognized approximately $7.7 million in project losses in the three months ended March 31, 2013, as a result of increases to the estimated costs to complete those projects of approximately $38.0 million. On one of those projects, we increased our estimated cost at completion by $17.5 million, which resulted in the recognition of a $5.4 million loss in the three months ended March 31, 2013, primarily due to changes in the project’s execution plan, which resulted in additional third-party construction vessel usage and marine downtime, cost overruns on offshore hook-up activities, and additional costs for project management-related activities. This project remains in a profitable position at March 31, 2013 and is estimated to be completed by the end of 2013.

On three of our other projects in the Middle East segment, we increased our estimated cost at completion by $16.7 million, which resulted in the recognition of only $1.8 million of project income in the three months ended March 31, 2013. The changes in estimated cost at completion were principally driven by cost overruns associated with marine equipment downtime, including productivity, hook-up and project management-related activities. Each of those projects was in a profitable position at March 31, 2013. Two of those projects are estimated to be completed by the end of 2013, and the remaining project is estimated to be completed during the first quarter of 2014.

On the remaining project in the Middle East segment, we recognized incremental costs of $4.1 million in the three months ended March 31, 2013, primarily due to cost overruns on marine installation activities. That project was in a loss position at March 31, 2013 and is estimated to be completed by the end of the second quarter of 2013.

The Atlantic segment was impacted by changes in estimates on two projects. On one of those projects, we recognized approximately $6.9 million of incremental project losses in the three months ended March 31, 2013, primarily due to declines in fabrication productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. The other project, which is substantially complete, recognized $2.4 million of cost savings as a result of efficiencies associated with fabrication activities.

The Asia Pacific segment benefited from certain changes in estimates, which resulted in a reduction of estimated costs at completion of approximately $14.0 million primarily due to efficiencies associated with the marine campaigns on two of our EPCI projects, one of which was completed in early 2013 and the other of which is expected to be completed by mid-2013. These benefits were partially offset by project charges recognized in the three months ended March 31, 2013 of approximately $4.1 million associated with cost overruns on support vessels on one of our subsea projects, which is currently in a loss position and is expected to be completed in late 2013.

2012 Period

Operating income for the three months ended March 31, 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 9. 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 March 31, 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:

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	239,823		$	273,729
Completed contracts		122,723			38,858
Retainages		98,042			133,619
Unbilled		4,710			4,710
Less allowances		(22,116	)		(22,116	)
Accounts receivable—trade, net	$	443,182		$	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:

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	98,042	$	133,619
Retainages expected to be collected after one year		56,297		32,085
Total retainages	$	154,339	$	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 March 31, 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 March 31, 2013 and December 31, 2012, respectively, no such allowance for doubtful accounts was recorded.

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 the Company’s 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 5 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 4 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 7 for our earnings per share computations.

Accumulated Other Comprehensive Loss

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

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	3,848		$	(3,366	)
Net loss on investments		(1,914	)		(2,316	)
Net gain (loss) on derivative financial instruments		(5,820	)		11,735
Unrecognized losses on benefit obligations		(96,811	)		(100,466	)
Accumulated other comprehensive loss	$	(100,697	)	$	(94,413	)

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

For the three months ended March 31, 2013	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,315	)	$	11,734		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss) before reclassification		401			(15,450	)		7,214			—			(7,835	)
Amounts reclassified from AOCI		—			(2,104	)(3)		—			3,655	(4)		1,551
Net current period other comprehensive income (loss)		401			(17,554	)		7,214			3,655			(6,284	)
Balance, March 31, 2013	$	(1,914	)	$	(5,820	)	$	3,848		$	(96,811	)	$	(100,697	)

For the three months ended March 31, 2012	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income before reclassification		696			(5,887	)		3,113			—			(2,078	)
Amounts reclassified from AOCI		—			1,142	(3)		—			3,045	(4)		4,187
Net current period other comprehensive income		696			(4,745	)		3,113			3,045			2,109
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)

(1) Refer to Note 4 for additional details.

(2) Refer to Note 3 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.

Recently Issued Accounting Standards

In February 2013, the Financial Accounting Standards Board (“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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Selected Financial Information Regarding Results of Operations of Charter Fleet Business (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposal of discontinued operations		$ 257
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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Summary of our available for sale securities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 18,936	$ 45,992
Available For Sale Securities Unrealized Gains Losses Net	(2,001)	(2,376)
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,058	2,023
Available For Sale Securities Unrealized Gains Losses Net
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	7,496	29,737
Available For Sale Securities Unrealized Gains Losses Net
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	8,381	8,477
Available For Sale Securities Unrealized Gains Losses Net	(2,001)	(2,376)
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	1,001	5,755
Available For Sale Securities Unrealized Gains Losses Net

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 807,488	$ 727,678
Costs and Expenses:
Cost of operations	712,814	597,434
Selling, general and administrative expenses	52,226	46,611
Gain on asset disposals	(14,716)	(226)
Total costs and expenses	750,324	643,819
Equity in Loss of Unconsolidated Affiliates	(4,131)	(3,683)
Operating Income	53,033	80,176
Other Income (Expense):
Interest income	342	1,634
Gain (loss) on foreign currency-net	(2,526)	9,441
Other income (expense)-net	782	(581)
Total other income (expense)	(1,402)	10,494
Income from continuing operations before provision for income taxes and noncontrolling interests	51,631	90,670
Provision for Income Taxes	27,313	28,743
Income from continuing operations before noncontrolling interests	24,318	61,927
Gain on disposal of discontinued operations		257
Income from discontinued operations, net of tax		3,240
Total income from discontinued operations, net of tax		3,497
Net income	24,318	65,424
Less: Net Income Attributable to Noncontrolling Interests	3,765	2,666
Net income attributable to McDermott International, Inc.	$ 20,553	$ 62,758
Basic:
Income from continuing operations, less noncontrolling interests	$ 0.09	$ 0.25
Income from discontinued operations, net of tax		$ 0.01
Net income attributable to McDermott International, Inc.	$ 0.09	$ 0.27
Diluted:
Income from continuing operations, less noncontrolling interests	$ 0.09	$ 0.25
Income from discontinued operations, net of tax		$ 0.01
Net income attributable to McDermott International, Inc.	$ 0.09	$ 0.26
Shares used in the computation of earnings per share:
Basic	235,941,185	235,208,252
Diluted	239,199,881	237,332,627

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Segment Reporting - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 Segment	Mar. 31, 2012 Segment
Segment Reporting Information [Line Items]
Number of reporting segments	3	4
Total capital expenditure	$ 34.0	$ 13.0

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 24,318	$ 65,424
Less: Income from discontinued operations, net of tax		3,497
Income from continuing operations	24,318	61,927
Non-cash items included in net income:
Depreciation and amortization	20,222	23,276
Equity in loss of unconsolidated affiliates	4,131	3,683
Gain on asset disposals	(14,716)	(226)
Benefit for deferred taxes	5,332	(4,131)
Other non-cash items	2,391	3,803
Changes in assets and liabilities, net of effects from acquisitions and dispositions:
Accounts receivable	(6,573)	50,017
Net contracts in progress and advance billings on contracts	(19,935)	65,363
Accounts payable	(125,234)	(55,292)
Accrued and other current liabilities	(20,774)	(10,040)
Pension liability and accrued postretirement and employee benefits	(19,657)	7,489
Other assets and liabilities	(42,170)	19,880
TOTAL CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES-CONTINUING OPERATIONS	(187,115)	172,861
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(37,649)	(44,751)
Increase in restricted cash and cash equivalents	(3,826)	(2,870)
Purchases of available-for-sale securities	(3,744)	(40,319)
Sales and maturities of available-for-sale securities	31,193	94,380
Proceeds from the sale and disposal of assets	35,621	226
Other investing activities	(4,596)	(2,376)
NET CASH PROVIDED BY INVESTING ACTIVITIES-CONTINUING OPERATIONS	16,999	4,290
NET CASH PROVIDED BY INVESTING ACTIVITIES-DISCONTINUED OPERATIONS		60,671
TOTAL CASH PROVIDED BY INVESTING ACTIVITIES	16,999	64,961
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment of debt	(1,494)	(1,494)
Distributions to noncontrolling interests	(6,200)	(15,733)
Other financing activities	(1,015)	(1,784)
TOTAL CASH USED IN FINANCING ACTIVITIES-CONTINUING OPERATIONS	(8,709)	(19,011)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	213	(700)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(178,612)	218,111
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	640,147	570,854
CASH AND CASH EQUIVALENTS AT END OF PERIOD-CONTINUING OPERATIONS	461,535	788,965
Cash paid during the period for:
Income taxes (net of refunds)	25,916	16,036
Drydock
Non-cash items included in net income:
Depreciation and amortization	$ 5,550	$ 7,112

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Derivative Financial Instruments (Detail) (Derivatives Designated as Hedges, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Asset derivatives fair value	$ 18,496	$ 26,081
Liability derivatives fair value	14,678	4,647
Accounts receivable-other
Derivative [Line Items]
Asset derivatives fair value	7,853	12,311
Other assets
Derivative [Line Items]
Asset derivatives fair value	10,643	13,770
Accounts payable
Derivative [Line Items]
Liability derivatives fair value	10,134	3,604
Other liabilities
Derivative [Line Items]
Liability derivatives fair value	$ 4,544	$ 1,043

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FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2013

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 March 31, 2013		Level 1		Level 2		Level 3
	(Unaudited)
	(In thousands)
Mutual funds(1)	$	2,058	$	—	$	2,058	$	—
Commercial paper		7,496		—		7,496		—
Asset-backed securities and collateralized mortgage obligations(2)		8,381		—		2,224		6,157
Corporate notes and bonds(3)		1,001		—		1,001		—
Total	$	18,936	$	—	$	12,779	$	6,157
	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 ended March 31, 2013 and March 31, 2012:

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,343		$	6,030
Total realized and unrealized gains		210			442
Principal repayments		(396	)		(295	)
Balance at end of period	$	6,157		$	6,177

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)
March 31, 2013
Mutual funds	$	2,058	$	—
Commercial paper		7,496		—
Asset-backed securities and collateralized mortgage obligations		8,381		(2,001	)
Corporate notes and bonds		1,001		—
Total	$	18,936	$	(2,001	)
	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:

	March 31, 2013						December 31, 2012
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	461,535		$	461,535		$	640,147		$	640,147
Restricted cash and cash equivalents	$	21,942		$	21,942		$	18,116		$	18,116
Investments	$	18,936		$	18,936		$	45,992		$	45,992
Debt	$	(101,213	)	$	(104,975	)	$	(102,708	)	$	(106,324	)
Forward contracts	$	3,818		$	3,818		$	21,434		$	21,434

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Effects of Derivative Instruments on Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Amount of loss recognized in other comprehensive income	$ (15,450)	$ (6,040)
Cost of operations
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Income reclassified from AOCI into income: effective portion	2,014	1,294
Gain (loss) on foreign currency - net
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain (loss) recognized in income ineffective portion and amount excluded from effectiveness testing	$ (2,849)	$ 2,350

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EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2013

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 March 31,
	2013		2012
	(Unaudited)
	(In thousands, except share and per share amounts)
Income from continuing operations less noncontrolling interests	$	20,553	$	59,261
Income from discontinued operations, net of tax		—		3,497
Net income attributable to McDermott International, Inc.	$	20,553	$	62,758
Weighted average common shares (basic)		235,941,185		235,208,252
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		3,258,696		2,124,375
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		239,199,881		237,332,627
Basic earnings per share:
Income from continuing operations less noncontrolling interests		0.09		0.25
Income from discontinued operations, net of tax		—		0.01
Net income attributable to McDermott International, Inc.		0.09		0.27
Diluted earnings per share:
Income from continuing operations less noncontrolling interests		0.09		0.25
Income from discontinued operations, net of tax		—		0.01
Net income attributable to McDermott International, Inc.		0.09		0.26

(1) Approximately 2.9 million and 1.8 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 ended March 31, 2013 and 2012, respectively.

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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	65,424				62,758			62,758	2,666
Other comprehensive income, net of tax	2,262	[1]					2,109	2,109	153
Exercise of stock options (in shares)			129,998
Exercise of stock options	552		130	422				552
Share vesting (in shares)			538,676
Share vesting			539	(539)
Purchase of treasury shares	(2,184)					(2,184)		(2,184)
Stock-based compensation charges	3,294			3,294				3,294
Distributions to noncontrolling interests	(15,733)								(15,733)
Ending Balance at Mar. 31, 2012	1,787,327		243,085	1,379,153	301,861	(98,011)	(99,921)	1,726,167	61,160
Ending Balance (in shares) at Mar. 31, 2012			243,085,098
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	24,318				20,553			20,553	3,765
Other comprehensive income, net of tax	(6,296)	[1]					(6,284)	(6,284)	(12)
Exercise of stock options (in shares)			18,549
Exercise of stock options	72		18	54				72
Share vesting (in shares)			317,664
Share vesting			318	(318)
Purchase of treasury shares	(1,034)					(1,034)		(1,034)
Stock-based compensation charges	3,923			3,852		71		3,923
Distributions to noncontrolling interests	(6,200)								(6,200)
Ending Balance at Mar. 31, 2013	$ 1,966,888		$ 243,778	$ 1,394,859	$ 466,309	$ (99,688)	$ (100,697)	$ 1,904,561	$ 62,327
Ending Balance (in shares) at Mar. 31, 2013			243,778,369

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

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net income	$ 24,318		$ 65,424
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs	3,655		3,045
Unrealized gain on investments	401		697
Translation adjustments	7,214		3,113
Unrealized loss on derivatives	(15,462)		(5,887)
Realized (gain) loss on derivatives	(2,104)		1,294
Other comprehensive income, net of tax	(6,296)	[1]	2,262	[1]
Total Comprehensive Income	18,022		67,686
Less: Comprehensive Income Attributable to Noncontrolling Interests	3,753		2,819
Comprehensive Income Attributable to McDermott International, Inc.	$ 14,269		$ 64,867

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

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

3 Months Ended

Mar. 31, 2013

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.

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 8 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. 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 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.

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 $165.6 million relating to this project remains in backlog at March 31, 2013. This project contributed revenues and costs equally, totaling $5.3 million and $5.2 million for the three-month periods ended March 31, 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 execution and the start of work on a project, we could lose the ability to forecast cost 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 did not enter into any contracts that we accounted for under the completed contract method during the quarters ended March 31, 2013 and March 31, 2012.

Claims Revenue

We include certain unapproved claims in the applicable contract value when we have a legal basis to do so, we consider collection to be probable and the value can be reasonably estimated. Claim revenue, when recorded, is only recorded to the extent of associated costs in our condensed consolidated financial statements. The net amount of revenues and costs included in our estimates at completion (i.e., contract values) associated with such claims was $225.8 million and $71.0 million as of March 31, 2013 and March 31, 2012, 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 March 31, 2013 and 2012, $29.0 million and $10.0 million of revenues and costs are reflected in our condensed consolidated financial statements pertaining to claims. Our unconsolidated joint ventures also recorded $3.7 million and $4.0 million of net revenue and costs associated with claims for the three months ended March 31, 2013 and 2012, respectively. We continue to actively engage in negotiations with our customers regarding the currently unresolved 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.

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 productivity, unanticipated vessel repair requirements, pipeline lay rates or steel and other raw material prices. Increases in costs associated with our fixed-price 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 March 31, 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 five active projects in our backlog that are in loss positions at March 31, 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 in late 2013 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. As of March 31, 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.

The following is a discussion of our most significant changes in estimates, which impacted operating income for the three months ended March 31, 2013 and 2012.

2013 Period

Operating income for the three months ended March 31, 2013 was impacted by changes in cost estimates relating to projects in each of our segments.

The Middle East segment was impacted by changes in estimates on five projects. In total, those five projects recognized approximately $7.7 million in project losses in the three months ended March 31, 2013, as a result of increases to the estimated costs to complete those projects of approximately $38.0 million. On one of those projects, we increased our estimated cost at completion by $17.5 million, which resulted in the recognition of a $5.4 million loss in the three months ended March 31, 2013, primarily due to changes in the project’s execution plan, which resulted in additional third-party construction vessel usage and marine downtime, cost overruns on offshore hook-up activities, and additional costs for project management-related activities. This project remains in a profitable position at March 31, 2013 and is estimated to be completed by the end of 2013.

On three of our other projects in the Middle East segment, we increased our estimated cost at completion by $16.7 million, which resulted in the recognition of only $1.8 million of project income in the three months ended March 31, 2013. The changes in estimated cost at completion were principally driven by cost overruns associated with marine equipment downtime, including productivity, hook-up and project management-related activities. Each of those projects was in a profitable position at March 31, 2013. Two of those projects are estimated to be completed by the end of 2013, and the remaining project is estimated to be completed during the first quarter of 2014.

On the remaining project in the Middle East segment, we recognized incremental costs of $4.1 million in the three months ended March 31, 2013, primarily due to cost overruns on marine installation activities. That project was in a loss position at March 31, 2013 and is estimated to be completed by the end of the second quarter of 2013.

The Atlantic segment was impacted by changes in estimates on two projects. On one of those projects, we recognized approximately $6.9 million of incremental project losses in the three months ended March 31, 2013, primarily due to declines in fabrication productivity. That project is currently in a loss position and is expected to be completed by the end of 2013. The other project, which is substantially complete, recognized $2.4 million of cost savings as a result of efficiencies associated with fabrication activities.

The Asia Pacific segment benefited from certain changes in estimates, which resulted in a reduction of estimated costs at completion of approximately $14.0 million primarily due to efficiencies associated with the marine campaigns on two of our EPCI projects, one of which was completed in early 2013 and the other of which is expected to be completed by mid-2013. These benefits were partially offset by project charges recognized in the three months ended March 31, 2013 of approximately $4.1 million associated with cost overruns on support vessels on one of our subsea projects, which is currently in a loss position and is expected to be completed in late 2013.

2012 Period

Operating income for the three months ended March 31, 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 9. 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 March 31, 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:

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	239,823		$	273,729
Completed contracts		122,723			38,858
Retainages		98,042			133,619
Unbilled		4,710			4,710
Less allowances		(22,116	)		(22,116	)
Accounts receivable—trade, net	$	443,182		$	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:

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	98,042	$	133,619
Retainages expected to be collected after one year		56,297		32,085
Total retainages	$	154,339	$	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 March 31, 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 March 31, 2013 and December 31, 2012, respectively, no such allowance for doubtful accounts was recorded.

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 the Company’s 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 5 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 4 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 7 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:

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	3,848		$	(3,366	)
Net loss on investments		(1,914	)		(2,316	)
Net gain (loss) on derivative financial instruments		(5,820	)		11,735
Unrecognized losses on benefit obligations		(96,811	)		(100,466	)
Accumulated other comprehensive loss	$	(100,697	)	$	(94,413	)

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

For the three months ended March 31, 2013	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,315	)	$	11,734		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss) before reclassification		401			(15,450	)		7,214			—			(7,835	)
Amounts reclassified from AOCI		—			(2,104	)(3)		—			3,655	(4)		1,551
Net current period other comprehensive income (loss)		401			(17,554	)		7,214			3,655			(6,284	)
Balance, March 31, 2013	$	(1,914	)	$	(5,820	)	$	3,848		$	(96,811	)	$	(100,697	)

For the three months ended March 31, 2012	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income before reclassification		696			(5,887	)		3,113			—			(2,078	)
Amounts reclassified from AOCI		—			1,142	(3)		—			3,045	(4)		4,187
Net current period other comprehensive income		696			(4,745	)		3,113			3,045			2,109
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)

(1) Refer to Note 4 for additional details.

(2) Refer to Note 3 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.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

In February 2013, the Financial Accounting Standards Board (“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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Document and Entity Information	3 Months Ended
	Mar. 31, 2013	May 01, 2013
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
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		236,457,101

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Mar. 31, 2013

Contracts Receivables

A summary of contract receivables is as follows:

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	239,823		$	273,729
Completed contracts		122,723			38,858
Retainages		98,042			133,619
Unbilled		4,710			4,710
Less allowances		(22,116	)		(22,116	)
Accounts receivable—trade, net	$	443,182		$	428,800

Retainages on Contracts

The following is a summary of retainages on our contracts:

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	98,042	$	133,619
Retainages expected to be collected after one year		56,297		32,085
Total retainages	$	154,339	$	165,704

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

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

	March 31, 2013			December 31, 2012
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	3,848		$	(3,366	)
Net loss on investments		(1,914	)		(2,316	)
Net gain (loss) on derivative financial instruments		(5,820	)		11,735
Unrecognized losses on benefit obligations		(96,811	)		(100,466	)
Accumulated other comprehensive loss	$	(100,697	)	$	(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 March 31, 2013	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited)
	(In thousands)
Balance, December 31, 2012	$	(2,315	)	$	11,734		$	(3,366	)	$	(100,466	)	$	(94,413	)
Other comprehensive income (loss) before reclassification		401			(15,450	)		7,214			—			(7,835	)
Amounts reclassified from AOCI		—			(2,104	)(3)		—			3,655	(4)		1,551
Net current period other comprehensive income (loss)		401			(17,554	)		7,214			3,655			(6,284	)
Balance, March 31, 2013	$	(1,914	)	$	(5,820	)	$	3,848		$	(96,811	)	$	(100,697	)

For the three months ended March 31, 2012	Unrealized holding loss on investment			Deferred gain (loss) on derivatives(1)			Foreign currency gain (loss)			Defined benefit pension plans loss(2)			TOTAL
	(Unaudited) (In thousands)
Balance, December 31, 2011	$	(4,402	)	$	3,088		$	(12,438	)	$	(88,278	)	$	(102,030	)
Other comprehensive income before reclassification		696			(5,887	)		3,113			—			(2,078	)
Amounts reclassified from AOCI		—			1,142	(3)		—			3,045	(4)		4,187
Net current period other comprehensive income		696			(4,745	)		3,113			3,045			2,109
Balance, March 31, 2012	$	(3,706	)	$	(1,657	)	$	(9,325	)	$	(85,233	)	$	(99,921	)

(1) Refer to Note 4 for additional details.

(2) Refer to Note 3 for additional details.

(3) Reclassified to cost of operations.

(4) Reclassified to selling, general and administrative expenses.

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 461,535	$ 640,147
Restricted cash and cash equivalents	21,942	18,116
Accounts receivable-trade, net	443,182	428,800
Accounts receivable-other	65,561	75,461
Contracts in progress	544,404	560,154
Deferred income taxes	6,888	9,765
Assets held for sale	1,396	2,679
Other current assets	42,436	54,667
Total Current Assets	1,587,344	1,789,789
Property, Plant and Equipment	2,155,243	2,115,176
Less accumulated depreciation	(828,223)	(833,385)
Net Property, Plant and Equipment	1,327,020	1,281,791
Investments	18,936	26,750
Goodwill	41,202	41,202
Investments in Unconsolidated Affiliates	35,233	37,435
Assets held for sale	12,243	26,758
Other Assets	159,040	129,902
Total Assets	3,181,018	3,333,627
Current Liabilities:
Notes payable and current maturities of long-term debt	44,025	14,146
Accounts payable	302,250	400,007
Accrued liabilities	332,358	369,418
Advance billings on contracts	206,010	241,696
Deferred income taxes	16,027	10,758
Income taxes payable	70,425	76,986
Total Current Liabilities	971,095	1,113,011
Long-Term Debt	57,188	88,562
Self-Insurance	24,141	22,641
Pension Liability	24,757	25,069
Other Liabilities	136,949	132,239
Commitments and Contingencies
Stockholders' Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 243,778,369 and 243,442,156 shares at March 31, 2013 and December 31, 2012, respectively	243,778	243,442
Capital in excess of par value	1,394,859	1,391,271
Retained earnings	466,309	445,756
Treasury stock, at cost, 7,359,501 and 7,574,903 shares at March 31, 2013 and December 31, 2012, respectively	(99,688)	(98,725)
Accumulated other comprehensive loss	(100,697)	(94,413)
Stockholders' Equity-McDermott International, Inc.	1,904,561	1,887,331
Noncontrolling Interests	62,327	64,774
Total Equity	1,966,888	1,952,105
Total Liabilities and Equity	$ 3,181,018	$ 3,333,627

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FAIR VALUE MEASUREMENTS

3 Months Ended

Mar. 31, 2013

FAIR VALUE MEASUREMENTS

NOTE 5—FAIR VALUE MEASUREMENTS

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

	Total at March 31, 2013		Level 1		Level 2		Level 3
	(Unaudited)
	(In thousands)
Mutual funds(1)	$	2,058	$	—	$	2,058	$	—
Commercial paper		7,496		—		7,496		—
Asset-backed securities and collateralized mortgage obligations(2)		8,381		—		2,224		6,157
Corporate notes and bonds(3)		1,001		—		1,001		—
Total	$	18,936	$	—	$	12,779	$	6,157
	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 ended March 31, 2013 and March 31, 2012:

	Three Months Ended March 31,
	2013			2012
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,343		$	6,030
Total realized and unrealized gains		210			442
Principal repayments		(396	)		(295	)
Balance at end of period	$	6,157		$	6,177

Unrealized Losses on Investments

Our net unrealized loss on investments was $1.9 million and $2.4 million at March 31, 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 March 31, 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)
March 31, 2013
Mutual funds	$	2,058	$	—
Commercial paper		7,496		—
Asset-backed securities and collateralized mortgage obligations		8,381		(2,001	)
Corporate notes and bonds		1,001		—
Total	$	18,936	$	(2,001	)
	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:

	March 31, 2013						December 31, 2012
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	461,535		$	461,535		$	640,147		$	640,147
Restricted cash and cash equivalents	$	21,942		$	21,942		$	18,116		$	18,116
Investments	$	18,936		$	18,936		$	45,992		$	45,992
Debt	$	(101,213	)	$	(104,975	)	$	(102,708	)	$	(106,324	)
Forward contracts	$	3,818		$	3,818		$	21,434		$	21,434

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DERIVATIVE FINANCIAL INSTRUMENTS

3 Months Ended

Mar. 31, 2013

DERIVATIVE FINANCIAL INSTRUMENTS

NOTE 4—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 March 31, 2013, the majority of our foreign currency forward contracts were designated as cash flow hedging instruments. In addition, we deferred approximately $6.0 million of net losses on these derivative financial instruments in AOCI, and we expect to reclassify approximately $4.0 million of deferred losses out of AOCI by March 31, 2014, as hedged items are recognized in earnings.

The notional value of our outstanding derivative contracts totaled $1.6 billion at March 31, 2013, with maturities extending through 2017. Of this amount, approximately $925.0 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 March 31, 2013, the fair value of these contracts was in a net asset position totaling $3.8 million.

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable—other	$	7,853	$	12,311
Other assets		10,643		13,770
Total asset derivatives	$	18,496	$	26,081
Accounts payable	$	10,134	$	3,604
Other liabilities		4,544		1,043
Total liability derivatives	$	14,678	$	4,647

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended March 31,
	2013			2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Amount of loss recognized in other comprehensive income	$	(15,450	)	$	(6,040	)
Income reclassified from AOCI into income: effective portion
Location
Cost of operations	$	2,014		$	1,294
Gain (loss) recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain (loss) on foreign currency—net	$	(2,849	)	$	2,350

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STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2013

Total Stock-Based Compensation Expense Recognized

Total stock-based compensation expense, net recognized for the three months ended March 31, 2013 and March 31, 2012 is as follows:

	Three Months Ended March 31,
	2013		2012
	(Unaudited) (In thousands)
Stock Options	$	1,030	$	994
Restricted Stock Units		1,737		1,460
Performance Shares		1,156		840
Total	$	3,923	$	3,294

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ACQUISITION AND DISPOSITIONS (Tables)

3 Months Ended

Mar. 31, 2013

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:

	Three Months Ended March 31, 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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SEGMENT REPORTING

3 Months Ended

Mar. 31, 2013

SEGMENT REPORTING

NOTE 8—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 March 31,
	2013			2012
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	326,062		$	297,035
Atlantic		148,184			99,604
Middle East		333,242			331,039
Total revenues	$	807,488		$	727,678
Operating income:
Asia Pacific	$	87,952		$	57,434
Atlantic		(16,410	)		(11,993	)
Middle East		(18,509	)		34,735
Total operating income	$	53,033		$	80,176
Capital expenditures(2):
Asia Pacific	$	3,755		$	16,565
Atlantic		22,010			11,875
Middle East		10,552			15,776
Corporate and Other		1,332			535
Total capital expenditures	$	37,649		$	44,751
Depreciation and amortization:
Asia Pacific	$	5,030		$	4,857
Atlantic		6,805			7,184
Middle East		6,510			7,494
Corporate and Other		1,877			3,741
Total depreciation and amortization	$	20,222		$	23,276
Drydock amortization:
Asia Pacific	$	2,961		$	2,992
Atlantic		1,908			3,436
Middle East		681			684
Total drydock amortization	$	5,550		$	7,112

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

⁽²⁾  Total capital expenditures presents expenditures for which cash payments were made during the period. These amounts exclude approximately $34.0 million and $13.0 million in accrued capital expenditures for the three months ended March 31, 2013 and 2012, respectively.

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,196,298	$	1,402,923
Atlantic		570,347		536,734
Middle East		1,208,121		1,006,284
Corporate and other		206,252		387,686
Total assets	$	3,181,018	$	3,333,627

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STOCK-BASED COMPENSATION

3 Months Ended

Mar. 31, 2013

STOCK-BASED COMPENSATION

NOTE 6—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 ended March 31, 2013 and March 31, 2012 is as follows:

	Three Months Ended March 31,
	2013		2012
	(Unaudited) (In thousands)
Stock Options	$	1,030	$	994
Restricted Stock Units		1,737		1,460
Performance Shares		1,156		840
Total	$	3,923	$	3,294

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EARNINGS PER SHARE

3 Months Ended

Mar. 31, 2013

EARNINGS PER SHARE

NOTE 7—EARNINGS PER SHARE

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

	Three Months Ended March 31,
	2013		2012
	(Unaudited)
	(In thousands, except share and per share amounts)
Income from continuing operations less noncontrolling interests	$	20,553	$	59,261
Income from discontinued operations, net of tax		—		3,497
Net income attributable to McDermott International, Inc.	$	20,553	$	62,758
Weighted average common shares (basic)		235,941,185		235,208,252
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		3,258,696		2,124,375
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		239,199,881		237,332,627
Basic earnings per share:
Income from continuing operations less noncontrolling interests		0.09		0.25
Income from discontinued operations, net of tax		—		0.01
Net income attributable to McDermott International, Inc.		0.09		0.27
Diluted earnings per share:
Income from continuing operations less noncontrolling interests		0.09		0.25
Income from discontinued operations, net of tax		—		0.01
Net income attributable to McDermott International, Inc.		0.09		0.26

(1) Approximately 2.9 million and 1.8 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 ended March 31, 2013 and 2012, respectively.

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COMMITMENTS AND CONTINGENCIES

3 Months Ended

Mar. 31, 2013

COMMITMENTS AND CONTINGENCIES

NOTE 9—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 March 31, 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 March 31, 2013, it is possible that we may incur liabilities for liquidated damages aggregating approximately $93.0 million, of which approximately $11.0 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 October 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 March 31, 2013, we had outstanding obligations related to our new vessel construction contracts on the LV 108 and DLV 2000 of $431.8 million in the aggregate, with $141.5 million, $228.6 million and $61.7 million due in the years ending December 31, 2013, 2014 and 2015, respectively.

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Derivative Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Net gain (loss) on derivative financial instruments	$ (5,820,000)	$ 11,735,000	$ (1,657,000)	$ 3,088,000
Net deferred gains expected to be reclassified from AOCI over next 12 months	4,000,000
Notional value of outstanding derivative contracts	1,600,000,000
Derivative contracts, maturity date	Dec. 31, 2017
Fair value of Derivative contracts	3,800,000
EPCI projects
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional value of outstanding derivative contracts	$ 925,000,000

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Financial Instruments

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	March 31, 2013		December 31, 2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable—other	$	7,853	$	12,311
Other assets		10,643		13,770
Total asset derivatives	$	18,496	$	26,081
Accounts payable	$	10,134	$	3,604
Other liabilities		4,544		1,043
Total liability derivatives	$	14,678	$	4,647

Effects of Derivative Instruments on Financial Statements

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended March 31,
	2013			2012
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Amount of loss recognized in other comprehensive income	$	(15,450	)	$	(6,040	)
Income reclassified from AOCI into income: effective portion
Location
Cost of operations	$	2,014		$	1,294
Gain (loss) recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain (loss) on foreign currency—net	$	(2,849	)	$	2,350

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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended					3 Months Ended								1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Minimum	Mar. 31, 2013 Maximum	Mar. 31, 2013 Atlantic	Mar. 31, 2012 Atlantic	Mar. 31, 2013 Atlantic Project One	Mar. 31, 2013 Atlantic Project Two	Mar. 31, 2013 Atlantic Deferred profit recognition contracts Project	Mar. 31, 2012 Atlantic Deferred profit recognition contracts	Mar. 31, 2013 Atlantic Backlog	Mar. 19, 2012 Charter Fleet Business Vessel	Mar. 19, 2012 Secunda International Limited Vessel	Mar. 31, 2013 Consolidated Entities	Mar. 31, 2012 Consolidated Entities	Mar. 31, 2013 Unconsolidated joint ventures	Mar. 31, 2012 Unconsolidated joint ventures	Mar. 31, 2013 Unapproved claims	Mar. 31, 2012 Unapproved claims	Mar. 31, 2013 Middle East Project	Mar. 31, 2013 Middle East Project One of Five	Mar. 31, 2013 Middle East Project Three of Five	Mar. 31, 2013 Middle East Project Two of Three	Mar. 31, 2013 Middle East Project One of Three	Mar. 31, 2013 Middle East Project Five of Five	Mar. 31, 2013 Asia Pacific Project
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of vessels operated													10
Number of vessels														14
Percentage of completion to recognize expected profit						70.00%
Number of projects										1											5						2
Revenues	$ 807,488,000	$ 727,678,000				$ 148,184,000	$ 99,604,000			$ 5,300,000	$ 5,200,000	$ 165,600,000			$ 29,000,000	$ 10,000,000	$ 3,700,000	$ 4,000,000	$ 225,800,000	$ 71,000,000
Cost of operations	712,814,000	597,434,000								5,300,000	5,200,000				29,000,000	10,000,000	3,700,000	4,000,000	225,800,000	71,000,000
Recognized project income losses								6,900,000	2,400,000												7,700,000	5,400,000	1,800,000
Increased estimated costs of project																					38,000,000		16,700,000
Changes in estimated cost of completion																						17,500,000				4,100,000	14,000,000
Project completion year																						2013		2013	2014	2013	2013
Project charges																											4,100,000
Equity method of accounting investment ownership				20.00%	50.00%
Accounts receivable - other	65,561,000		75,461,000
Allowance for doubtful accounts	$ 0		$ 0

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Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Value	$ 461,535	$ 640,147	$ 788,965	$ 570,854
Restricted cash and cash equivalents, Carrying Amount	21,942	18,116
Investments, Carrying Amount	18,936	45,992
Debt, Carrying Amount	(101,213)	(102,708)
Forward contracts, Carrying Amount	3,818	21,434
Cash and cash equivalents, Fair Value	461,535	640,147
Restricted cash and cash equivalents, Fair Value	21,942	18,116
Investments, Fair Value	18,936	45,992
Debt, Fair Value	(104,975)	(106,324)
Forward contracts, Fair Value	$ 3,818	$ 21,434

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	243,778,369	243,442,156
Treasury stock, shares	7,359,501	7,574,903

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PENSION PLANS

3 Months Ended

Mar. 31, 2013

PENSION PLANS

NOTE 3—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						TCN Plan
	Three Months Ended March 31,
	2013			2012			2013			2012
	(Unaudited)
	(In thousands)
Interest cost	$	167		$	6,693		$	467		$	461
Expected return on plan assets		(3,000	)		(9,000	)		(651	)		(611	)
Recognized net actuarial loss and other		3,152			2,590			507			446
Net periodic benefit cost	$	319		$	283		$	323		$	296

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Contract Receivables (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages	$ 98,042	$ 133,619
Less allowances	0	0
Accounts receivable-trade, net	443,182	428,800
Contract Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages	98,042	133,619
Unbilled	4,710	4,710
Less allowances	(22,116)	(22,116)
Accounts receivable-trade, net	443,182	428,800
Contract Receivable | Contracts in progress
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contracts receivable	239,823	273,729
Contract Receivable | Completed contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contracts receivable	$ 122,723	$ 38,858

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Fair Values of Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 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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PENSION PLANS (Tables)

3 Months Ended

Mar. 31, 2013

Net Periodic Benefit Cost

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

	Domestic Plans						TCN Plan
	Three Months Ended March 31,
	2013			2012			2013			2012
	(Unaudited)
	(In thousands)
Interest cost	$	167		$	6,693		$	467		$	461
Expected return on plan assets		(3,000	)		(9,000	)		(651	)		(611	)
Recognized net actuarial loss and other		3,152			2,590			507			446
Net periodic benefit cost	$	319		$	283		$	323		$	296