10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended June 30, 2012

OR

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

For the transition period from                     to                    

Commission File No. 001-08430

McDERMOTT INTERNATIONAL, INC.

(Exact name of registrant as specified in its charter)

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

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

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

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

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

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

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

The number of shares of the registrant’s common stock outstanding at July 27, 2012 was 235,810,640.

McDERMOTT INTERNATIONAL, INC.

INDEX—FORM 10-Q

	PAGE
PART I—FINANCIAL INFORMATION
Item 1 – Financial Statements		3
Condensed Consolidated Statements of Income—(Unaudited) Three and Six Months Ended June  30, 2012 and 2011		3
Condensed Consolidated Statements of Comprehensive Income—(Unaudited) Three and Six Months Ended June 30, 2012 and 2011		4
Condensed Consolidated Balance Sheets—(Unaudited) June 30, 2012 and December 31, 2011		5
Condensed Consolidated Statements of Cash Flows—(Unaudited) Six Months Ended June  30, 2012 and 2011		6
Condensed Consolidated Statements of Equity—(Unaudited) Six Months Ended June 30, 2012 and 2011		7
Notes to Condensed Consolidated Financial Statements—(Unaudited)		8
Item  2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations		22
Item 3 – Quantitative and Qualitative Disclosures about Market Risk		31
Item 4 – Controls and Procedures		31
PART II—OTHER INFORMATION
Item 1 – Legal Proceedings		31
Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds		31
Item 6 – Exhibits		32
SIGNATURES		33

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands, except share and per share amounts)
Revenues	$	889,248		$	849,801		$	1,616,926		$	1,749,041
Costs and Expenses:
Cost of operations		759,704			703,805			1,357,138			1,451,030
Selling, general and administrative expenses		47,482			60,412			94,093			115,781
(Gain) loss on asset disposals		29			(71	)		(197	)		(296	)
Total costs and expenses		807,215			764,146			1,451,034			1,566,515
Equity in Income (Loss) of Unconsolidated Affiliates		(2,651	)		(1,876	)		(6,334	)		1,551
Operating Income		79,382			83,779			159,558			184,077
Other Income (Expense):
Interest income		1,585			292			3,219			741
Interest expense		—			(263	)		—			(263	)
Gain (loss) on foreign currency—net		1,256			1,372			10,697			(2,860	)
Other income (expense)—net		51			(117	)		(530	)		(1,288	)
Total other income (expense)		2,892			1,284			13,386			(3,670	)
Income from continuing operations before provision for income taxes and noncontrolling interests		82,274			85,063			172,944			180,407
Provision for Income Taxes		28,345			17,237			57,088			39,816
Income from continuing operations before noncontrolling interests		53,929			67,826			115,856			140,591
Gain on disposal of discontinued operations		—			—			257			—
Income from discontinued operations, net of tax		—			3,610			3,240			5,272
Total income from discontinued operations, net of tax		—			3,610			3,497			5,272
Net Income		53,929			71,436			119,353			145,863
Less: Net Income Attributable to Noncontrolling Interests		1,190			4,108			3,856			8,115
Net Income Attributable to McDermott International, Inc.	$	52,739		$	67,328		$	115,497		$	137,748
Earnings per Common Share:
Basic:
Income from continuing operations, less noncontrolling interests		0.22			0.27			0.48			0.57
Income from discontinued operations, net of tax		—			0.02			0.01			0.02
Net income attributable to McDermott International, Inc.		0.22			0.29			0.49			0.59
Diluted:
Income from continuing operations, less noncontrolling interests		0.22			0.27			0.47			0.56
Income from discontinued operations, net of tax		—			0.02			0.01			0.02
Net income attributable to McDermott International, Inc.		0.22			0.28			0.49			0.58
Shares used in the computation of earnings per share:
Basic		235,681,213			234,573,031			235,444,733			234,207,053
Diluted		237,460,765			237,544,674			237,396,697			237,145,126

See accompanying notes to condensed consolidated financial statements.

3

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Net Income	$	53,929		$	71,436		$	119,353		$	145,863
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs		2,681			5,093			5,726			10,056
Unrealized gain on benefit plan revaluation		—			9,883			—			9,883
Unrealized gain (loss) on investments		431			(63	)		1,128			636
Realized loss on investments		—			12			—			20
Translation adjustments		3,326			1,268			6,439			4,031
Unrealized gain (loss) on derivatives		(18,216	)		3,311			(24,103	)		11,378
Realized loss on derivatives		1,107			77			2,401			(146	)
Other comprehensive income (loss), net of tax(1)		(10,671	)		19,581			(8,409	)		35,858
Total Comprehensive Income	$	43,258		$	91,017		$	110,944		$	181,721
Less: Comprehensive Income Attributable to Noncontrolling Interests.		1,138			4,499			3,957			9,625
Comprehensive Income Attributable to McDermott International, Inc.	$	42,120		$	86,518		$	106,987		$	172,096

⁽¹⁾ The tax impact on amounts presented in other comprehensive income is not significant.

See accompanying notes to condensed consolidated financial statements.

4

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

	June 30, 2012			December 31, 2011
	(Unaudited) (In thousands, except share and per share amounts)
Assets
Current Assets:
Cash and cash equivalents	$	644,060		$	570,854
Restricted cash and cash equivalents		24,024			21,962
Investments		48,970			109,522
Accounts receivable—trade, net		402,503			445,808
Accounts receivable—other		62,478			53,386
Contracts in progress		471,010			287,390
Deferred income taxes		12,316			11,931
Assets held for sale		—			3,197
Other current assets		38,349			33,135
Total Current Assets		1,703,710			1,537,185
Property, Plant and Equipment		2,087,422			1,958,877
Less accumulated depreciation		(898,635	)		(857,012	)
Net Property, Plant and Equipment		1,188,787			1,101,865
Assets Held for Sale		—			55,571
Investments		31,661			29,484
Goodwill		41,202			41,202
Investments in Unconsolidated Affiliates		37,873			42,659
Other Assets		187,809			184,848
Total Assets	$	3,191,042		$	2,992,814
Liabilities and Equity
Current Liabilities:
Notes payable and current maturities of long-term debt	$	14,573		$	8,941
Accounts payable		318,743			315,514
Accrued liabilities		337,076			309,515
Advance billings on contracts		353,457			320,438
Deferred income taxes		13,195			13,187
Income taxes payable		55,197			54,181
Total Current Liabilities		1,092,241			1,021,776
Long-Term Debt		95,207			84,794
Self-Insurance		26,214			23,585
Pension Liability		19,652			21,295
Other Liabilities		123,168			107,652
Commitments and Contingencies
Stockholders’ Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 243,379,604 and 242,416,424 shares at June 30, 2012 and December 31, 2011, respectively		243,380			242,416
Capital in excess of par value		1,383,538			1,375,976
Retained earnings		354,600			239,103
Treasury stock, at cost, 7,874,779 and 7,359,983 shares at June 30, 2012 and December 31, 2011, respectively		(98,723	)		(95,827	)
Accumulated other comprehensive loss		(110,540	)		(102,030	)
Stockholders’ Equity—McDermott International, Inc.		1,772,255			1,659,638
Noncontrolling Interests		62,305			74,074
Total Equity		1,834,560			1,733,712
Total Liabilities and Equity	$	3,191,042		$	2,992,814

See accompanying notes to condensed consolidated financial statements.

5

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Six Months Ended June 30,
	2012			2011
	(Unaudited)
	(In thousands)
Cash Flows From Operating Activities:
Net income	$	119,353		$	145,863
Less: Income from discontinued operations, net of tax		3,497			5,272
Income from continuing operations	$	115,856		$	140,591
Non-cash items included in net income:
Depreciation and amortization		45,874			40,099
Equity in (income) loss of unconsolidated affiliates		6,334			(1,551	)
Gain on asset disposals and impairments—net		(197	)		(296	)
Provision (benefit) from deferred taxes		1,194			(11,648	)
Pension costs		768			11,588
Other non-cash items		10,090			10,369
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable		36,237			(54,481	)
Net contracts in progress and advance billings on contracts		(150,712	)		(257,381	)
Accounts payable		4,074			27,589
Accrued and other current liabilities		10,145			40,505
Pension liability and accrued postretirement and employee benefits		15,426			(42,067	)
Other assets and liabilities		(3,902	)		24,907
Net Cash Provided By (Used In) Operating Activities—Continuing Operations		91,187			(71,776	)
Net Cash Provided By Operating Activities—Discontinued Operations		—			62
Total Cash Provided By (Used In) Operating Activities		91,187			(71,714	)
Cash Flows From Investing Activities:
Purchases of property, plant and equipment		(131,661	)		(141,682	)
(Increase) decrease in restricted cash and cash equivalents		(2,062	)		39,950
Purchases of available-for-sale securities		(66,266	)		(377,018	)
Sales and maturities of available-for-sale securities		125,895			424,452
Other investing activities, net		(2,071	)		303
Net Cash Used In Investing Activities—Continuing Operations		(76,165	)		(53,995	)
Net Cash Provided By Investing Activities—Discontinued Operations		60,671			—
Total Cash Used In Investing Activities		(15,494	)		(53,995	)
Cash Flows From Financing Activities:
Increase in debt		19,033			30,745
Payment of debt		(2,988	)		(4,288	)
Distributions to noncontrolling interests		(15,726	)		—
Other financing activities, net		(2,638	)		(2,361	)
Net Cash Provided By (Used In) Financing Activities—Continuing Operations		(2,319	)		24,096
Effects of exchange rate changes on cash and cash equivalents		(168	)		45
Net increase (decrease) in cash and cash equivalents		73,206			(101,568	)
Cash and cash equivalents at beginning of period		570,854			403,463
Cash and cash equivalents at end of period—Continuing Operations	$	644,060		$	301,895
Supplemental Disclosures of Cash Flow Information:
Cash paid during the period for:
Income taxes (net of refunds)	$	47,403		$	25,534

See accompanying notes to condensed consolidated financial statements.

6

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY

	Common Stock				Capital In Excess of Par Value			Retained Earnings		Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Stockholders’ Equity			Non- Controlling Interests			Total Equity
	Shares		Par Value
	(Unaudited) (In thousands, except share amounts)
Balance December 31, 2010		240,791,473	$	240,791	$	1,357,316		$	100,373	$	(85,735	)	$	(163,717	)	$	1,449,028		$	63,239		$	1,512,267
Net income		—		—		—			137,748		—			—			137,748			8,115			145,863
Other comprehensive income, net of tax		—		—		—			—		—			34,348			34,348			1,510			35,858
Exercise of stock options		399,239		399		1,692			—		—			—			2,091			—			2,091
Share vesting		961,748		962		(962	)		—		—			—			—			—			—
Purchase of treasury shares		—		—		—			—		(7,035	)		—			(7,035	)		—			(7,035	)
Stock-based compensation charges		—		—		10,524			—		—			—			10,524			—			10,524
Distributions to noncontrolling interests		—		—		—			—		—			—			—			(2,500	)		(2,500	)
Balance June 30, 2011		242,152,460	$	242,152	$	1,368,570		$	238,121	$	(92,770	)	$	(129,369	)	$	1,626,704		$	70,364		$	1,697,068
Balance December 31, 2011		242,416,424	$	242,416	$	1,375,976		$	239,103	$	(95,827	)	$	(102,030	)	$	1,659,638		$	74,074		$	1,733,712
Net income		—		—		—			115,497		—			—			115,497			3,856			119,353
Other comprehensive income, net of tax		—		—		—			—		—			(8,510	)		(8,510	)		101			(8,409	)
Exercise of stock options		158,842		159		557			—		—			—			716			—			716
Share vesting		804,338		805		(805	)		—		—			—			—			—			—
Purchase of treasury shares		—		—		—			—		(2,896	)		—			(2,896	)		—			(2,896	)
Stock-based compensation charges		—		—		7,810			—		—			—			7,810			—			7,810
Distributions to noncontrolling interests		—		—		—			—		—			—			—			(15,726	)		(15,726	)
Balance June 30, 2012		243,379,604	$	243,380	$	1,383,538		$	354,600	$	(98,723	)	$	(110,540	)	$	1,772,255		$	62,305		$	1,834,560

See accompanying notes to condensed consolidated financial statements.

7

McDERMOTT INTERNATIONAL, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

JUNE 30, 2012

(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, 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 for oil and gas field developments, we deliver fixed and floating production facilities, pipeline and subsea systems from concept to commissioning. We support these activities with comprehensive project management and procurement services. 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, 2011.

We have included all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation. These unaudited 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 “joint ventures” or “unconsolidated affiliates.” We have eliminated 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. The consolidated balance sheet as of December 31, 2011 reflects the charter fleet business as held for sale. Accordingly, we have presented the notes to our condensed consolidated financial statements on the basis of continuing operations. In addition, certain 2011 amounts in the condensed consolidated statements of cash flows have been reclassified to conform to the 2012 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 for all unbilled revenues. Certain costs are generally excluded from the cost-to-cost method of measuring progress, such as significant costs for materials and third-party subcontractors. Total estimated costs, and resulting contract income, are affected by changes in the expected cost of materials and labor, productivity, 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.

8

For contracts as to which we are unable to estimate the final profitability except to assure that no loss will ultimately be incurred, 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 reasonably estimable, which we generally determine to be when the contract is approximately 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, except to assure that no loss will be incurred, as deferred profit recognition contracts. We currently have two projects that we account for under our deferred profit recognition policy. These projects contributed revenues equal to costs totaling approximately $13 million and $10.5 million for the three-month periods ended June 30, 2012 and 2011, respectively, and approximately $23 million and $18.4 million for the six-month periods ended June 30, 2012 and 2011, respectively.

Our policy is to account for fixed-price contracts under the completed contract method if we believe that we are unable to reasonably forecast cost to complete at start-up. 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 have accounted for under the completed contract method during the six-month periods ended June 30, 2012 and June 30, 2011.

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, 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.

We include claims revenue for extra work or changes in scope of work in contract value when we consider collection to be probable and the value can be reasonably estimated. Claim revenue is only recorded in our consolidated financial statements to the extent of associated costs. For the three months and six months ended June 30, 2012, approximately $29 million and $39 million, respectively, of revenues equal to costs are reflected in our condensed consolidated financial statements pertaining to claims. Certain of our unconsolidated joint ventures also included approximately $1 million and $5 million of claim revenue and costs in their financial statements for the three months and six months ended June 30, 2012, respectively. The amounts recorded for claims in the three months and six months ended June 30, 2011 were not material to the condensed consolidated financial statements. We continue to actively engage in negotiations with our customers. 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.

As of June 30, 2012, 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 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.

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.

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 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.

9

Cash and Cash Equivalents

Our cash and cash equivalents are highly liquid investments with maturities of three months or less when we purchase them.

We record cash and cash equivalents as restricted when we are unable to freely use such cash and cash equivalents for our general operating purposes. At June 30, 2012, we had restricted cash and cash equivalents totaling $24.0 million, all of which was held in restricted foreign-entity accounts.

Investments

We classify investments available for current operations in the balance sheet as current assets, 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 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. Investments in entities where our ownership interest is less than 20% and where we are unable to exert significant influence are carried at cost.

Accounts Receivable

Accounts Receivable – Trade, Net

A summary of contract receivables is as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	286,781		$	371,223
Completed contracts		54,649			28,369
Retainages		78,151			65,248
Unbilled		5,050			5,650
Less allowances		(22,128	)		(24,682	)
Accounts receivable—trade, net	$	402,503		$	445,808

We expect to invoice our unbilled receivables after contractually specified 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.

The following amounts represent retainages on contracts:

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	78,151	$	65,248
Retainages expected to be collected after one year		72,557		74,539
Total retainages	$	150,708	$	139,787

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 $62.5 million and $53.4 million at June 30, 2012 and December 31, 2011, respectively. The balance primarily consists of transactions with unconsolidated and other affiliates, value-added and other non-income related taxes expected to be refunded, transactions with and advances to employees and receivables associated with our hedging activities. These amounts are expected to be collected within 12 months, and any allowance for doubtful accounts on our accounts receivable—other is based on our estimate of the amount of probable losses due to the inability to collect these amounts (based on historical collection experience and other available information). As of June 30, 2012 and as of December 31, 2011, no such allowance for doubtful accounts was recorded.

10

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. In addition to defining fair value, the authoritative accounting guidance expands disclosures about fair value measurements and establishes a hierarchy for valuation inputs that emphasizes the use of observable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy established by this topic is broken down as follows:

• 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 may contain provisions under which payments from our customers are denominated in U.S. Dollars and in a foreign currency. 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.

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 other comprehensive income (loss), 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.

11

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss included in stockholders’ equity are as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(5,999	)	$	(12,438	)
Net loss on investments		(3,275	)		(4,403	)
Net gain (loss) on derivative financial instruments		(18,714	)		3,089
Unrecognized losses on benefit obligations		(82,552	)		(88,278	)
Accumulated other comprehensive loss	$	(110,540	)	$	(102,030	)

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 May 2011, the Financial Accounting Standards Board (“FASB”) issued an update to the topic Fair Value Measurement. This update provides guidance about how fair value should be applied where it is already required or permitted under GAAP. The update does not extend the use of fair value or require additional fair value measurements, but rather provides explanations about how to measure fair value and requires prospective application. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

In June 2011, the FASB issued an update to the topic Comprehensive Income. This update eliminates the option to present components of other comprehensive income as part of the statement of equity and requires those components to instead be presented as one continuous statement with the statement of operations or as a separate, consecutive financial statement. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

In September 2011, the FASB issued an update to the topic Intangibles—Goodwill and Other. This update amends current guidance on the testing of goodwill for impairment, by providing an entity with the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, prior to calculating the fair value of the reporting unit. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

NOTE 2 – DISCONTINUED OPERATION

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 our 2007 Secunda Acquisition. The cash proceeds from the charter fleet sale were approximately $61 million, resulting in a gain on the sale of approximately $0.3 million.

12

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012(1)		2011
	(Unaudited) (In thousands)
Revenues	$	—	$	11,062	$	8,184	$	20,566
Income before provision for income taxes		—		2,330		3,497		4,741
Provision for income taxes		—		720		—		1,469
Income from discontinued operations, net of tax	$	—	$	1,610	$	3,497	$	3,272

⁽¹⁾   Includes the charter fleet operations through March 19, 2012.

The following table presents the carrying values of the major classes of assets and liabilities held for sale that are included in our condensed consolidated balance sheet as of December 31, 2011:

	December 31, 2011
	(In thousands)
Other assets	$	3,197
Property, plant and equipment—net		45,892
Other assets		9,679
Total long-term assets held for sale	$	55,571

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 employees who may have otherwise obtained benefits under the TCN Plan.

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

	Domestic Plans
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Interest cost	$	6,569		$	7,155		$	13,262		$	14,230
Expected return on plan assets		(8,905	)		(7,550	)		(17,905	)		(14,075	)
Recognized net actuarial loss and other		2,228			4,482			4,818			8,730
Curtailments		—			(8	)		—			(8	)
Net periodic pension (benefit) cost	$	(108	)	$	4,079		$	175		$	8,877

13

	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Service cost	$	—		$	686		$	—		$	1,371
Interest cost		461			595			922			1,190
Expected return on plan assets		(611	)		(613	)		(1,222	)		(1,226	)
Amortization of prior service cost		—			4			—			8
Recognized net actuarial loss		447			684			893			1,368
Net periodic benefit cost	$	297		$	1,356		$	593		$	2,711

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 accumulated other comprehensive income (loss) (“AOCI”) until the hedged item is recognized in earnings; (2) offset against the change in fair value of the hedged firm commitment through earnings; or (3) recognized immediately in earnings. At the inception and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows or fair value attributable to the hedged risk. We exclude from our assessment of effectiveness the portion of the fair value of the forward contracts attributable to the difference between spot exchange rates and forward exchange rates. The ineffective portion of a derivative’s change in fair value and any portion excluded from the assessment of effectiveness are immediately recognized in earnings. Gains and losses on derivative financial instruments that are immediately recognized in earnings are included as a component of gain (loss) on foreign currency—net in our condensed consolidated statements of income. At June 30, 2012, we had designated the majority of our foreign currency forward-exchange contracts as cash flow hedging instruments.

At June 30, 2012, we had deferred $18.7 million of net losses on these derivative financial instruments in AOCI, and we expect to reclassify approximately $2.5 million of deferred losses out of AOCI over the next 12 months.

At June 30, 2012, our derivative financial instruments consisted of foreign currency forward-exchange contracts. The notional value of our outstanding derivative contracts totaled approximately $1.0 billion at June 30, 2012, with maturities extending through 2017. Of this amount, approximately $750 million is associated with various foreign currency expenditures we expect to incur on one of our EPCI projects. The fair value of these contracts at June 30, 2012 was in a net liability position totaling $11.8 million. The fair value of outstanding derivative instruments is determined using observable financial market inputs, such as quoted market prices, and is classified as Level 2 in nature.

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable–other	$	3,582	$	2,765
Other assets		—		66
Total asset derivatives	$	3,582	$	2,831
Accounts payable	$	8,177	$	6,891
Other liabilities		7,186		969
Total liability derivatives	$	15,363	$	7,860

14

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,					Six Months Ended June 30,
	2012			2011		2012			2011
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Amount of gain (loss) recognized in other comprehensive income (loss)	$	(18,164	)	$	3,311	$	(24,204	)	$	11,378
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	676		$	93	$	1,970		$	(42	)
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain (loss) on foreign currency – net	$	9,115		$	147	$	11,465		$	(1,823	)

NOTE 5 – FAIR VALUE MEASUREMENTS

The following tables summarize our available-for-sale securities measured at fair value:

	June 30, 2012		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds(1)	$	1,960	$	—	$	1,960	$	—
Commercial paper		64,457		—		64,457		—
Asset-backed securities and collateralized mortgage obligations(2)		8,452		—		2,114		6,338
Corporate notes and bonds(3)		5,762		—		5,762		—
Total	$	80,631	$	—	$	74,293	$	6,338
	December 31, 2011		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	1,923	$	—	$	1,923	$	—
Commercial paper		123,210		—		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		—		2,101		6,030
Corporate notes and bonds		5,742		—		5,742		—
Total	$	139,006	$	—	$	132,976	$	6,030

(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 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.

15

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-month and six-month periods ended June 30, 2012 and 2011:

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,177		$	7,503		$	6,030		$	7,372
Total realized and unrealized gains (losses)		456			(39	)		898			465
Principal repayments		(295	)		(392	)		(590	)		(765	)
Balance at end of period	$	6,338		$	7,072		$	6,338		$	7,072

Unrealized Losses on Investments

Our net unrealized loss on investments was $3.3 million and $4.4 million at June 30, 2012 and December 31, 2011, 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, continue to perform and we currently do not have the intent to sell these securities before their anticipated recovery. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired as of June 30, 2012. 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 with unrealized losses greater than twelve months:

	Twelve Months or Greater
	Fair Value		Unrealized Losses
June 30, 2012	(Unaudited) (In thousands)
Mutual funds	$	1,960	$	—
Commercial paper		64,457		—
Asset-backed securities and collateralized mortgage obligations		8,452		(3,289	)
Corporate notes and bonds		5,762		—
Total	$	80,631	$	(3,289	)

	Twelve Months or Greater
	Fair Value		Unrealized Losses
December 31, 2011	(In thousands)
Mutual funds	$	1,923	$	—
Commercial paper		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		(4,358	)
Corporate notes and bonds		5,742		—
Total	$	139,006	$	(4,358	)

Other Financial Instruments

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

Cash and cash equivalents and restricted cash and cash equivalents. The carrying amounts that we have reported in the accompanying unaudited condensed consolidated balance sheets for cash and cash equivalents and restricted cash and cash equivalents approximate their fair values.

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.

16

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

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

	June 30, 2012						December 31, 2011
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	644,060		$	644,060		$	570,854		$	570,854
Restricted cash and cash equivalents	$	24,024		$	24,024		$	21,962		$	21,962
Investments	$	80,631		$	80,631		$	139,006		$	139,006
Debt	$	109,780		$	113,029		$	93,735		$	96,187
Forward contracts	$	(11,781	)	$	(11,781	)	$	(5,029	)	$	(5,029	)

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. 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 recognized for the three months and six months ended June 30, 2012 and 2011 is as follows:

	Three Months  Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited) (In thousands)
Stock Options	$	1,023	$	1,062	$	2,017	$	1,870
Restricted Stock and Restricted Stock Units		2,258		3,466		3,718		8,151
Performance Shares and Deferred Stock Units		1,235		381		2,075		503
Total	$	4,516	$	4,909	$	7,810	$	10,524

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NOTE 7 – EARNINGS PER SHARE

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited)
	(In thousands, except share and per share amounts)
Income from continuing operations less noncontrolling interests	$	52,739	$	63,718	$	112,000	$	132,476
Income from discontinued operations, net of tax		—		3,610		3,497		5,272
Net income attributable to McDermott International, Inc.	$	52,739	$	67,328	$	115,497	$	137,748
Weighted average common shares (basic)		235,681,213		234,573,031		235,444,733		234,207,053
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		1,779,552		2,971,643		1,951,964		2,938,073
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		237,460,765		237,544,674		237,396,697		237,145,126
Basic earnings per share:
Income from continuing operations less noncontrolling interests		0.22		0.27		0.48		0.57
Income from discontinued operations, net of tax		—		0.02		0.01		0.02
Net income attributable to McDermott International, Inc.		0.22		0.29		0.49		0.59
Diluted earnings per share:
Income from continuing operations less noncontrolling interests		0.22		0.27		0.47		0.56
Income from discontinued operations, net of tax		—		0.02		0.01		0.02
Net income attributable to McDermott International, Inc.		0.22		0.28		0.49		0.58

⁽¹⁾ Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three-month and six-month periods ended June 30, 2012, respectively. Approximately 0.4 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share for each of the three-month and six-month periods ended June 30, 2011.

18

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 June  30,						Six Months Ended June  30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	338,464		$	547,833		$	635,499		$	1,022,646
Atlantic		110,304			52,552			209,908			92,446
Middle East		440,480			249,416			771,519			633,949
Total revenues	$	889,248		$	849,801		$	1,616,926		$	1,749,041
Operating income (loss):
Asia Pacific	$	46,605		$	58,511		$	104,039		$	97,390
Atlantic		(14,042	)		(16,607	)		(26,035	)		(34,244	)
Middle East		46,819			41,875			81,554			120,931
Total operating income	$	79,382		$	83,779		$	159,558		$	184,077
Capital expenditures(2):
Asia Pacific	$	21,666		$	11,431		$	38,231		$	38,417
Atlantic		52,615			54,148			64,490			82,900
Middle East		10,935			5,781			26,711			13,492
Corporate and Other		1,694			6,336			2,229			6,873
Total capital expenditures	$	86,910		$	77,696		$	131,661		$	141,682
Depreciation and amortization:
Asia Pacific	$	5,235		$	6,616		$	10,092		$	12,352
Atlantic		6,111			3,448			13,295			7,241
Middle East		7,554			6,566			15,048			13,929
Corporate and Other		3,698			2,944			7,439			6,577
Total depreciation and amortization	$	22,598		$	19,574		$	45,874		$	40,099

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

⁽²⁾ Total capital expenditures exclude approximately $1.3 million and $6.9 million in accrued capital expenditures for the six months ended June 30, 2012 and 2011, respectively.

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,187,914	$	934,134
Atlantic		345,218		419,258
Middle East		1,222,580		1,065,478
Corporate and Other		435,330		515,176
Total continuing operations		3,191,042		2,934,046
Total discontinued operations		—		58,768
Total assets	$	3,191,042	$	2,992,814

19

NOTE 9 – COMMITMENTS AND CONTINGENCIES

Litigation

The following discussion presents information relating to pending litigation discussed in Note 13 – Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2011. 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 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”), 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.

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At June 30, 2012 we had total environmental reserves of $1.2 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 that we have provided for in our consolidated financial statements.

Contracts Containing Liquidated Damages Provisions

Some of our contracts contain provisions that require us to pay liquidated damages if we are responsible for the failure to meet specified contractual milestone dates and the applicable customer asserts a claim under these provisions. These contracts define the conditions under which our customers may make claims against us for liquidated damages. In many cases in which we have historically had potential exposure for liquidated damages, such damages ultimately were not asserted by our customers. As of June 30, 2012, it is possible that we may incur liabilities for liquidated damages aggregating approximately $41 million, of which approximately $18 million has been recorded in our financial statements, based on our actual or projected failure to meet certain specified contractual milestone dates. The date range during which these potential liquidated damages could arise is from June 2011 to March 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.

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

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, 2011.

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

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;

• anticipated levels of demand for our products and services;

• 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 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;

• 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;

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• 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;

• 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 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 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, 2011. 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.

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, primarily based on price. However, other factors that customers may consider include 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.

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

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

Some of our contracts contain provisions that require us to pay liquidated damages if we are responsible for the failure to meet specified contractual milestone dates and the applicable customer asserts a claim under these provisions. These contracts define the conditions under which our customers may make claims against us for liquidated damages. In many cases in which we have historically had potential exposure for liquidated damages, such damages ultimately were not asserted by our customers. As of June 30, 2012, it is possible that we may incur liabilities for liquidated damages aggregating approximately $41 million, of which approximately $18 million has been recorded in our financial statements, based on our actual or projected failure to meet certain specified contractual milestone dates. The date range during which these potential liquidated damages could arise is from June 2011 to March 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.

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, 2011. See Note 1 to our unaudited condensed consolidated financial statements included in this report for information on recently adopted accounting standards.

Business Segments and Results of Operations

Business Segments

Our business segments consist 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. The following is a discussion of our segments.

Asia Pacific Segment

Through our Asia Pacific segment, we serve the needs of national, major integrated and other oil and gas companies 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 national, major integrated and other oil and gas companies, 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.

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Middle East Segment

Through our Middle East segment, which includes the Caspian region, we serve the needs of national, major integrated and other oil and gas companies primarily in Saudi Arabia, Qatar, the United Arab Emirates (U.A.E.), Kuwait, India, Azerbaijan, the North Sea, Russia and Turkmenistan. 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 operate and are stationed throughout the various regions and provide structural lifting/lowering and pipelay services. These major construction vessels are supported by our multi-function vessels and chartered vessels from third parties to perform a wide array of installation activities that include anchor handling, pipelay, cable/umbilical lay, dive support and hookup/commissioning.

Results of Operations

Selected Financial Data:

	Three Months Ended June  30,						Six Months Ended June  30,
	2012			2011			2012			2011
	(In thousands)
Revenues:
Asia Pacific	$	338,464		$	547,833		$	635,499		$	1,022,646
Atlantic		110,304			52,552			209,908			92,446
Middle East		440,480			249,416			771,519			633,949
Total revenues	$	889,248		$	849,801		$	1,616,926		$	1,749,041
Operating income (loss):
Asia Pacific	$	46,605		$	58,511		$	104,039		$	97,390
Atlantic		(14,042	)		(16,607	)		(26,035	)		(34,244	)
Middle East		46,819			41,875			81,554			120,931
Total operating income	$	79,382		$	83,779		$	159,558		$	184,077
Other income (expense):
Interest income	$	1,585		$	292		$	3,219		$	741
Interest expense		—			(263	)		—			(263	)
Gain (loss) on foreign currency – net		1,256			1,372			10,697			(2,860	)
Other income (expense) – net		51			(117	)		(530	)		(1,288	)
Total other income (expense)	$	2,892		$	1,284		$	13,386		$	(3,670	)
Provision for Income Taxes	$	28,345		$	17,237		$	57,088		$	39,816
Total income from discontinued operations, net of tax	$	—		$	3,610		$	3,497		$	5,272
Net Income Attributable to Noncontrolling Interests	$	1,190		$	4,108		$	3,856		$	8,115

Three months ended June 30, 2012 vs. 2011

Revenues

Revenues increased approximately 5%, or $39.4 million, to $889.2 million in the three months ended June 30, 2012 compared to $849.8 million for the corresponding 2011 period. The revenue growth was attributable to the Middle East and Atlantic segments. Revenues in the Middle East segment increased $191.1 million to $440.5 million in the three months ended June 30, 2012, compared to $249.4 million in the three months ended June 30, 2011, influenced by increased fabrication and marine activity associated with one of our EPCI projects and by several other projects that commenced fabrication or marine activities during the second quarter of 2012. Revenues in our Atlantic segment increased $57.8 million to $110.3 million in the three months ended June 30, 2012, compared to $52.6 million in the three months ended June 30, 2011, influenced primarily by increased fabrication and marine activity experienced on certain projects during the three-month period ended June 30, 2012. Revenue improvements in the Middle East and Atlantic segments were partially offset by a decline in our Asia Pacific segment, where revenues decreased approximately 38%, or $209.4 million, to $338.5 million, driven largely by lower marine activity associated with several projects that were ongoing during the quarter ended June 30, 2011 but were completed prior to the quarter ended June 30, 2012.

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Cost of Operations

Cost of operations increased approximately 8%, or $55.9 million, to $759.7 million in the three months ended June 30, 2012 compared to $703.8 million for the corresponding 2011 period. The increase was primarily attributable to increased project costs in the Middle East and Atlantic segments, partially offset by a decrease in project costs in the Asia Pacific segment. The increases in project costs in the Middle East and Atlantic segments were driven by higher levels of project activity reflecting increased fabrication and marine activity. Costs of operations in Asia Pacific decreased significantly as a result of lower marine activity, partially offset by higher fabrication activity.

Operating Income

Operating income decreased $4.4 million to $79.4 million in the quarter ended June 30, 2012 from $83.8 million in the quarter ended June 30, 2011, driven principally by the Asia Pacific segment. Operating income in the Asia Pacific segment declined $11.9 million to $46.6 million in the three months ended June 30, 2012, influenced by reduced marine activity on several projects for which the marine activities were ongoing during the quarter ended June 30, 2011 but were completed prior to the quarter ended June 30, 2012. The operating income decline reported in the Asia Pacific segment was partially offset by our Middle East segment, which reported an increase in operating income of approximately $5 million to $46.8 million in the three months ended June 30, 2012, influenced by increased fabrication activities and, to a lesser extent, increased marine activity experienced on certain projects. The Atlantic segment reported an operating loss of $14.0 million for the quarter ended June 30, 2012, an improvement of $2.6 million compared to the 2011 period, influenced primarily by increased fabrication and marine activity.

Total operating margins, defined as operating income divided by revenues, was 9% for the quarter ended June 30, 2012 and 10% for the quarter ended June 30, 2011. In the quarter ended June 30, 2012, we experienced increased operating margins in our Asia Pacific segment, largely as a result of improvements from change orders and cost savings on marine installation activities on one of our EPCI projects. Conversely, we experienced a decline in our Middle East segment operating margins, influenced by lower project close-outs and settlements in the second quarter of 2012 as compared to the quarter ended June 30, 2011. Operating income and margins are frequently influenced by the finalization 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 resolved, 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, therefore, is difficult to predict.

We currently have two projects, one of which is in our Atlantic segment and the other of which is in our Asia Pacific segment, that we account for under our deferred profit recognition policy under which we recognize revenue and cost equally and only recognize profit when probable and reasonably estimable, generally when the contract is approximately 70% complete. These projects contributed revenues equal to costs totaling approximately $13 million and $10.5 million for the three-month periods ended June 30, 2012 and 2011, respectively.

Other Items in Operating Income

Selling, general and administrative expenses decreased $12.9 million to $47.5 million in the three months ended June 30, 2012 as compared to $60.4 million in the three months ended June 30, 2011. The decrease was primarily due to lower corporate costs, including those associated with our pension plans.

Equity in income (loss) of unconsolidated affiliates declined $0.8 million to a loss of $2.7 million for the three months ended June 30, 2012 as compared to a loss of $1.9 million in the quarter ended June 30, 2011, primarily attributable to increased equity losses from our FloaTEC and Qingdao joint ventures.

Other Items

Interest income was $1.6 million and $0.3 million for the three months ended June 30, 2012 and June 30, 2011, respectively, primarily as a result of higher cash and cash equivalents balances being placed in interest bearing accounts.

Results for the quarters ended June 30, 2012 and 2011 were not significantly impacted by interest expense, gain (loss) on foreign currency – net or other expense.

Provision for Income Taxes

For the three months ended June 30, 2012, the provision for income taxes increased $11.1 million to $28.3 million, while income before provision for income taxes decreased $2.8 million to $82.3 million. The increase in the provision for income taxes was primarily attributable to the mix of earnings across jurisdictions resulting in a larger proportion of our income being taxed at higher tax rates and losses in certain tax jurisdictions for which we do not expect to receive a benefit. As a result, our effective tax rate for the three months ended June 30, 2012 was approximately 34% as compared to 20% for the comparable 2011 period.

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Discontinued Operations

On March 19, 2012, we completed the sale of our former charter fleet business for cash consideration of approximately $61 million, resulting in a gain on the sale of approximately $0.3 million. Accordingly, we reported no discontinued operations for the three months ended June 30, 2012. Total income from discontinued operations, net of tax was $3.6 million for the three months ended June 30, 2011.

Noncontrolling Interests

Net income attributable to noncontrolling interests decreased by $2.9 million to $1.2 million in the three months ended June 30, 2012 from $4.1 million in the three months ended June 30, 2011, primarily due to losses incurred at one of our joint ventures.

Six months ended June 30, 2012 vs. 2011

Revenues

Revenues decreased approximately 8%, or $132.1 million, to $1.6 billion in the six months ended June 30, 2012 compared to $1.7 billion for the corresponding 2011 period. The revenue decline was attributable to the Asia Pacific segment, where revenues decreased $387.1 million to $635.5 million in the six months ended June 30, 2012 compared to $1.0 billion in the six months ended June 30, 2011. The revenue decline in the Asia Pacific segment was attributable to lower marine and fabrication activity associated with several projects that were substantially completed prior to the quarter ended June 30, 2012. The revenue decline in our Asia Pacific segment was partially offset by revenue improvements experienced in our Middle East and Atlantic segments. Revenues in the Middle East segment improved by $137.6 million to $771.5 million in the six months ended June 30, 2012 as compared to $633.9 million in the six months ended June 30, 2011, influenced by increased fabrication and marine activity on several projects, partially offset by lower fabrication and marine activity associated with certain projects that were ongoing during the six months ended June 30, 2011 period but were substantially complete during the first half of 2012. Revenues in our Atlantic segment improved by $117.5 million to $209.9 million in the six months ended June 30, 2012, compared to $92.4 million for the six months ended June 30, 2011, largely as a result of increased fabrication activities and, to a lesser extent, increased marine activity.

Cost of Operations

Cost of operations decreased approximately 6%, or $93.9 million, to $1.4 billion in the six months ended June 30, 2012 compared to $1.4 billion for the corresponding 2011 period. The decrease was primarily attributable to the Asia Pacific segment, partially offset by increased project costs in the Middle East and Atlantic segments. In the Asia Pacific segment, cost of operations decreased significantly as a result of lower marine and fabrication activity. Cost of operations increases experienced in the Middle East and Atlantic segments were principally driven by higher levels of project activity, reflecting increased fabrication and marine activity.

Operating Income

Operating income decreased $24.5 million to $159.6 million in the six months ended June 30, 2012 from $184.1 million in the six months ended June 30, 2011, attributable to our Middle East segment, where operating income declined $39.4 million to $81.6 million in the six months ended June 30, 2012 compared to $120.9 million in the six months ended June 30, 2011. The operating income decline in the Middle East segment was primarily attributable to lower project close-outs and settlements in the 2012 period. Operating income in our Asia Pacific segment increased $6.6 million to $104.0 million in the six months ended June 30, 2012 as compared to $97.4 million in the six months ended June 30, 2011, primarily attributable to improvements from change orders and cost savings on marine installation activities on one of our EPCI projects, partially offset by lower fabrication and marine activity on other projects. The Atlantic segment reported an operating loss of $26.0 million for the six months ended June 30, 2012, an improvement of $8.2 million compared to the 2011 period, influenced primarily by increased fabrication and marine activity.

Total operating margins were 10% in the six months ended June 30, 2012 and were 11% for the six months ended June 30, 2011. In the first half of 2012, we experienced increased operating margins in our Asia Pacific segment, largely as a result of improvements from change orders and cost savings on marine installation activities on one of our EPCI projects. Conversely, we experienced a decline in our Middle East segment operating margins, influenced by lower project close-outs and settlements in the first half of 2012 as compared to the 2011 period. Operating income and margins are frequently influenced by the finalization 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 resolved 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, therefore, is difficult to predict.

The two projects that we account for under our deferred profit recognition policy contributed revenues equal to costs totaling approximately $23 million and $18.4 million for the six-month periods ended June 30, 2012 and 2011, respectively.

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Other Items in Operating Income

Selling, general and administrative expenses decreased $21.7 million to $94.1 million in the six months ended June 30, 2012 as compared to $115.8 million in the six months ended June 30, 2011. The decrease was primarily due to lower corporate costs, including those associated with pension and share-based compensation plans.

Equity in income (loss) of unconsolidated affiliates decreased $7.9 million to a loss of $6.3 million in the six months ended June 30, 2012 as compared to income of $1.6 million in the six months ended June 30, 2011, primarily attributable to increased equity losses from our FloaTEC and Qingdao joint ventures.

Other Items

Interest income was $3.2 million and $0.7 million for the six months ended June 30, 2012 and June 30, 2011, respectively, primarily as a result of higher cash and cash equivalents balances being placed in interest bearing accounts.

Results for the six months ended June 30, 2012 and 2011 were not significantly impacted by interest expense.

Gain (loss) on foreign currency – net improved by $13.6 million to income of $10.7 million in the six months ended June 30, 2012 from expense of $2.9 million in the six months ended June 30, 2011, primarily due to gains related to derivative instruments and hedging activities of approximately $12 million recognized during the 2012 period, as compared to losses related to derivative instruments and hedging activities of approximately $2 million recognized during the 2011 period.

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 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 continue to experience large gains or losses on foreign currency movements due to the ineffective portion or the portion excluded from the assessment of effectiveness of these and other derivative contracts. At June 30, 2012, our derivative financial instruments consisted of foreign currency forward-exchange contracts. The notional value of our outstanding derivative contracts totaled approximately $1.0 billion at June 30, 2012, with maturities extending through 2017. Of this amount, approximately $750 million is associated with various foreign currency expenditures we expect to incur on the EPCI project.

Other income (expense) – net was a loss of $0.5 million in the six months ended June 30, 2012 and a loss of $1.3 million in the six months ended June 30, 2011.

Provision for Income Taxes

For the six months ended June 30, 2012, the provision for income taxes increased $17.3 million to $57.1 million, while income before provision for income taxes decreased $7.5 million to $172.9 million. The increase in the provision for income taxes was primarily attributable to the mix of earnings across jurisdictions resulting in a larger proportion of our income being taxed at higher tax rates coupled with losses in certain tax jurisdictions for which we do not expect to receive a benefit. As a result, our effective tax rate for the six months ended June 30, 2012 was approximately 33%, as compared to 22% for the comparable 2011 period.

Discontinued Operations

On March 19, 2012, we completed the sale of our former charter fleet business for cash consideration of approximately $61 million, resulting in a gain on the sale of approximately $0.3 million. Total income from discontinued operations, net of tax was income of $3.5 million and $5.3 million for the six months ended June 30, 2012 and 2011, respectively.

Noncontrolling Interests

Net income attributable to noncontrolling interests decreased by $4.3 million to $3.9 million in the six months ended June 30, 2012 from $8.1 million in the six months ended June 30, 2011, primarily due to reduced activity and lower net income at our joint ventures.

28

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 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 a contract in our backlog when we enter into a written confirmation with the customer. 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.

	June 30, 2012				December 31, 2011
	(Dollars in millions)
Asia Pacific	$	3,446	60	%	$	1,523	39	%
Atlantic		847	15	%		711	18	%
Middle East		1,454	25	%		1,647	43	%
Total Backlog	$	5,747	100	%	$	3,881	100	%

Of the June 30, 2012 backlog, we expect to recognize revenues as follows:

	2012		2013		Thereafter
	(In millions)
Total Backlog	$	2,069	$	1,486	$	2,192

Of the June 30, 2012 backlog, approximately $447 million is from projects currently in a loss position whereby future revenues are expected to equal costs when recognized. It is possible that our estimates of gross profit could increase or decrease based on improved productivity, actual downtime and the resolution of change orders and claims with our customers. Additionally, we have two projects that we are accounting for under our deferred profit recognition policy, representing approximately $374 million of the June 30, 2012 backlog.

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 (the “Credit Agreement”), provide an additional resource to fund our operating and investing activities. 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 June 30, 2012, we were in compliance with our covenant requirements. Management believes the sources of liquidity and capital resources described above will be sufficient to fund our liquidity requirements for the next twelve months. In addition, management regularly evaluates the 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.

Cash, Cash Equivalents and Investments

In the aggregate, our cash and cash equivalents, restricted cash and investments increased by $16.9 million to $748.7 million at June 30, 2012 from $731.8 million at December 31, 2011.

At June 30, 2012, we had restricted cash and cash equivalents totaling $24.0 million, all of which was held in restricted foreign-entity accounts.

At June 30, 2012, we had investments with a fair value of $80.6 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 $3.3 million and $4.4 million at June 30, 2012 and December 31, 2011, 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 increased by $20.8 million to a negative $56.6 million at June 30, 2012 from a negative $77.4 million at December 31, 2011, primarily due to the increase in the net amount of contracts in progress and advanced billings on contracts.

29

Cash Flow Activities

Operating activities. Our net cash provided by operating activities was $91.2 million in the six-month period ended June 30, 2012, compared to net cash used in operating activities of $71.8 million in the six months ended June 30, 2011. This change was primarily attributable to changes in net contracts in progress and advance billings on contracts and accounts receivable.

Investing activities. Our net cash used in investing activities was $76.2 million in the six months ended June 30, 2012, compared to cash used in investing activities of $54.0 million in the six months ended June 30, 2011. This change was primarily attributable to the change in restricted cash and cash equivalents.

Financing activities. Our net cash used in financing activities was $2.3 million in the six-month period ended June 30, 2012 as compared to cash provided by financing activities of $24.1 million in the six months ended June 30, 2011. The change was primarily attributable to approximately $16 million of distributions to noncontrolling interests during the six months ended June 30, 2012.

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.

Loans outstanding under the Credit Agreement bear interest at the borrower’s option at either the Eurodollar rate plus a margin ranging from 1.50% to 2.50% per year or the base rate (the highest of the Federal Funds rate plus 0.50%, the 30-day Eurodollar rate plus 1.0%, or the administrative agent’s prime rate) plus a margin ranging from 0.50% to 1.50% per year. The applicable margin for revolving loans varies depending on the credit ratings of the Credit Agreement. We are charged a commitment fee on the unused portions of the Credit Agreement, and that fee varies between 0.200% and 0.450% per year depending on the credit ratings of the Credit Agreement. Additionally, we are charged a letter of credit fee of between 1.50% and 2.50% per year with respect to the amount of each financial letter of credit issued under the Credit Agreement and a letter of credit fee of between 0.75% and 1.25% per year with respect to the amount of each performance letter of credit issued under the Credit Agreement, in each case depending on the credit ratings of the Credit Agreement. Under the Credit Agreement, we also pay customary issuance fees and other fees and expenses in connection with the issuance of letters of credit under the Credit Agreement. In connection with entering into the Credit Agreement, 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 June 30, 2012, there were no borrowings outstanding, and letters of credit issued under the Credit Agreement totaled $292.3 million. At June 30, 2012, there was $657.7 million available for borrowings or to meet letter of credit requirements under the Credit Agreement. There were no borrowings under this facility during the quarter ended June 30, 2012. Had there been borrowings, the applicable base interest rate would have been approximately 4% per annum. In addition, we had $150.4 million in outstanding unsecured bilateral letters of credit at June 30, 2012.

Based on the credit ratings applicable to the Credit Agreement at June 30, 2012, 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”) entered into a vessel-owning joint venture transaction with Oceanteam ASA. As a result of this transaction, we have consolidated notes payable of approximately $40.3 million and $43.3 million on our balance sheets at June 30, 2012 and December 31, 2011, respectively, of which approximately $6.0 million is classified as current notes payable at June 30, 2012 and December 31, 2011. 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 2.815% 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 a pipeline construction support vessel to be named 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 commencing on October 1, 2012. Borrowings under the agreement are secured by, among other things,

30

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. At June 30, 2012, there was $69.4 million in borrowings outstanding, of which $8.6 million was classified as current notes payable. At December 31, 2011, there was $50.4 million in borrowings outstanding, of which $2.9 million was classified as current notes payable.

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 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.

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, 2011.

Item 4. Controls and Procedures

As of the end of the period covered by this quarterly report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) adopted by the SEC under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). Our disclosure controls and procedures were developed through a process in which our management applied its judgment in assessing the costs and benefits of such controls and procedures, which, by their nature, can provide only reasonable assurance regarding the control objectives. You should note that the design of any system of disclosure controls and procedures is based in part upon various assumptions about the likelihood of future events, and we cannot assure you that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how remote. Based on the evaluation referred to above, our Chief Executive Officer and Chief Financial Officer concluded that the design and operation of our disclosure controls and procedures are effective as of June 30, 2012 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 as appropriate to allow timely decisions regarding disclosure. There has been no change in our internal control over financial reporting during the quarter ended June 30, 2012 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information on our purchases of equity securities during the quarter ended June 30, 2012, all of which involved repurchases of shares of MII common stock in connection with the vesting of restricted stock units pursuant to the provisions of employee benefit plans that permit the repurchase of common stock to satisfy statutory tax withholding obligations associated with the vesting of restricted stock units:

Period	Total number of shares purchased		Average price paid per share		Total number of shares purchased as part of publicly announced plans or programs		Maximum number of shares that may yet be purchased under the plans or programs
April 1 – April 30, 2012		—	$	—		not applicable		not applicable
May 1 – May 31, 2012		16,654		10.94		not applicable		not applicable
June 1 – June 30, 2012		—		—		not applicable		not applicable
Total		16,654	$	10.94		not applicable		not applicable

31

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)).
10.1*	Summary of Named Executive Officer Base Salaries (incorporated by reference to Exhibit 10.1 to McDermott International, Inc.’s Current Report on Form 8-K filed May 31, 2012 (File No. 1-08430)).
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

32

SIGNATURES

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

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

August 6, 2012

33

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)).
10.1*	Summary of Named Executive Officer Base Salaries (incorporated by reference to Exhibit 10.1 to McDermott International, Inc.’s Current Report on Form 8-K filed May 31, 2012 (File No. 1-08430)).
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-31.1

Exhibit 31.1

CERTIFICATIONS

I, Stephen M. Johnson, certify that:

1. I have reviewed this quarterly report on Form 10-Q of McDermott International, Inc. for the quarterly period ended June 30, 2012;

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

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

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

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

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

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

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

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

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

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

August 6, 2012

/s/ Stephen M. Johnson

Stephen M. Johnson

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

EX-31.2

Exhibit 31.2

I, Perry L. Elders, certify that:

1. I have reviewed this quarterly report on Form 10-Q of McDermott International, Inc. for the quarterly period ended June 30, 2012;

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

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

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

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

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

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

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

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

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

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

August 6, 2012

/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, Chief Executive Officer of McDermott International, Inc., a Panamanian corporation (the “Company”), hereby certify, to my knowledge, that:

(1) the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Dated: August 6, 2012

/s/ Stephen M. Johnson

Stephen M. Johnson

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

EX-32.2

Exhibit 32.2

MCDERMOTT INTERNATIONAL, INC.

Certification Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

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

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

(1) the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Dated: August 6, 2012

/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		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 6,177	$ 7,503	$ 6,030	$ 7,372
Total realized and unrealized gains (losses)	456	(39)	898	465
Principal repayments	(295)	(392)	(590)	(765)
Balance at end of period	$ 6,338	$ 7,072	$ 6,338	$ 7,072

XML

Summarized Financial Information of Segments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting Information [Line Items]
Accrued capital expenditures	$ 1.3	$ 6.9

XML

Segment Reporting - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2012 Segment
Segment Reporting Information [Line Items]
Number of primary operating segments	4
Number of reporting segments	3

XML

Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Domestic Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 6,569	$ 7,155	$ 13,262	$ 14,230
Expected return on plan assets	(8,905)	(7,550)	(17,905)	(14,075)
Recognized net actuarial loss	2,228	4,482	4,818	8,730
Curtailments		(8)		(8)
Net periodic benefit cost	(108)	4,079	175	8,877
TCN Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost		686		1,371
Interest cost	461	595	922	1,190
Expected return on plan assets	(611)	(613)	(1,222)	(1,226)
Amortization of prior service cost		4		8
Recognized net actuarial loss	447	684	893	1,368
Net periodic benefit cost	$ 297	$ 1,356	$ 593	$ 2,711

XML

SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2012

Summarized Financial Information of Segments

Summarized financial information is shown in the following tables:

	Three Months Ended June  30,						Six Months Ended June  30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	338,464		$	547,833		$	635,499		$	1,022,646
Atlantic		110,304			52,552			209,908			92,446
Middle East		440,480			249,416			771,519			633,949
Total revenues	$	889,248		$	849,801		$	1,616,926		$	1,749,041
Operating income (loss):
Asia Pacific	$	46,605		$	58,511		$	104,039		$	97,390
Atlantic		(14,042	)		(16,607	)		(26,035	)		(34,244	)
Middle East		46,819			41,875			81,554			120,931
Total operating income	$	79,382		$	83,779		$	159,558		$	184,077
Capital expenditures(2):
Asia Pacific	$	21,666		$	11,431		$	38,231		$	38,417
Atlantic		52,615			54,148			64,490			82,900
Middle East		10,935			5,781			26,711			13,492
Corporate and Other		1,694			6,336			2,229			6,873
Total capital expenditures	$	86,910		$	77,696		$	131,661		$	141,682
Depreciation and amortization:
Asia Pacific	$	5,235		$	6,616		$	10,092		$	12,352
Atlantic		6,111			3,448			13,295			7,241
Middle East		7,554			6,566			15,048			13,929
Corporate and Other		3,698			2,944			7,439			6,577
Total depreciation and amortization	$	22,598		$	19,574		$	45,874		$	40,099

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

⁽²⁾ Total capital expenditures exclude approximately $1.3 million and $6.9 million in accrued capital expenditures for the six months ended June 30, 2012 and 2011, respectively.

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,187,914	$	934,134
Atlantic		345,218		419,258
Middle East		1,222,580		1,065,478
Corporate and Other		435,330		515,176
Total continuing operations		3,191,042		2,934,046
Total discontinued operations		—		58,768
Total assets	$	3,191,042	$	2,992,814

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Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 644,060	$ 570,854
Restricted cash and cash equivalents, carrying amount	24,024	21,962
Investments, carrying amount	80,631	139,006
Debt, carrying amount	109,780	93,735
Forward contracts, carrying amount	(11,781)	(5,029)
Cash and cash equivalents, fair value	644,060	570,854
Restricted cash and cash equivalents, fair value	24,024	21,962
Investments, fair value	80,631	139,006
Debt, fair value	113,029	96,187
Forward contracts, fair value	$ (11,781)	$ (5,029)

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Available-for-Sale Securities Measured at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 80,631		$ 139,006
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	1,960	[1]	1,923
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	64,457		123,210
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	8,452	[2]	8,131
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	5,762	[3]	5,742
Level 2
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	74,293		132,976
Level 2 | Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	1,960	[1]	1,923
Level 2 | Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	64,457		123,210
Level 2 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,114	[2]	2,101
Level 2 | Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	5,762	[3]	5,742
Level 3
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	6,338		6,030
Level 3 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 6,338	[2]	$ 6,030

[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.

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Summarized Financial Information of Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 889,248	[1]	$ 849,801	[1]	$ 1,616,926	[1]	$ 1,749,041	[1]
Operating income (loss)	79,382		83,779		159,558		184,077
Capital expenditures	86,910	[2]	77,696	[2]	131,661	[2]	141,682	[2]
Depreciation and amortization	22,598		19,574		45,874		40,099
Assets, continuing operations	3,191,042				3,191,042				2,934,046
Assets, discontinued operations									58,768
Total Assets	3,191,042				3,191,042				2,992,814
Asia Pacific
Segment Reporting Information [Line Items]
Revenues	338,464		547,833		635,499		1,022,646
Operating income (loss)	46,605		58,511		104,039		97,390
Capital expenditures	21,666		11,431		38,231		38,417
Depreciation and amortization	5,235		6,616		10,092		12,352
Assets, continuing operations	1,187,914				1,187,914				934,134
Atlantic
Segment Reporting Information [Line Items]
Revenues	110,304		52,552		209,908		92,446
Operating income (loss)	(14,042)		(16,607)		(26,035)		(34,244)
Capital expenditures	52,615		54,148		64,490		82,900
Depreciation and amortization	6,111		3,448		13,295		7,241
Assets, continuing operations	345,218				345,218				419,258
Middle East
Segment Reporting Information [Line Items]
Revenues	440,480		249,416		771,519		633,949
Operating income (loss)	46,819		41,875		81,554		120,931
Capital expenditures	10,935		5,781		26,711		13,492
Depreciation and amortization	7,554		6,566		15,048		13,929
Assets, continuing operations	1,222,580				1,222,580				1,065,478
Corporate and Other
Segment Reporting Information [Line Items]
Capital expenditures	1,694		6,336		2,229		6,873
Depreciation and amortization	3,698		2,944		7,439		6,577
Assets, continuing operations	$ 435,330				$ 435,330				$ 515,176

[1] Intersegment transactions included in revenues were not significant for the periods presented.

[2] Total capital expenditures exclude approximately $1.3 million and $6.9 million in accrued capital expenditures for the six months ended June 30, 2012 and 2011, respectively.

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DISCONTINUED OPERATION

6 Months Ended

Jun. 30, 2012

DISCONTINUED OPERATION

NOTE 2 – DISCONTINUED OPERATION

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 our 2007 Secunda Acquisition. The cash proceeds from the charter fleet sale were approximately $61 million, resulting in a gain on the sale of approximately $0.3 million.

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012(1)		2011
	(Unaudited) (In thousands)
Revenues	$	—	$	11,062	$	8,184	$	20,566
Income before provision for income taxes		—		2,330		3,497		4,741
Provision for income taxes		—		720		—		1,469
Income from discontinued operations, net of tax	$	—	$	1,610	$	3,497	$	3,272

⁽¹⁾   Includes the charter fleet operations through March 19, 2012.

The following table presents the carrying values of the major classes of assets and liabilities held for sale that are included in our condensed consolidated balance sheet as of December 31, 2011:

	December 31, 2011
	(In thousands)
Other assets	$	3,197
Property, plant and equipment—net		45,892
Other assets		9,679
Total long-term assets held for sale	$	55,571

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Total Stock-Based Compensation Expense Recognized (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	$ 4,516	$ 4,909	$ 7,810	$ 10,524
Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	1,023	1,062	2,017	1,870
Restricted Stock and Restricted Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	2,258	3,466	3,718	8,151
Performance Shares and Deferred Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expenses	$ 1,235	$ 381	$ 2,075	$ 503

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Accumulated Other Comprehensive Loss included in Stockholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments	$ (5,999)	$ (12,438)
Net loss on investments	(3,275)	(4,403)
Net gain (loss) on derivative financial instruments	(18,714)	3,089
Unrecognized losses on benefit obligations	(82,552)	(88,278)
Accumulated other comprehensive loss	$ (110,540)	$ (102,030)

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Retainages on Contracts (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages expected to be collected within one year	$ 78,151	$ 65,248
Retainages expected to be collected after one year	72,557	74,539
Total retainages	$ 150,708	$ 139,787

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Computation of Basic and Diluted Earnings Per Common Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Earnings Per Share Disclosure [Line Items]
Income from continuing operations less noncontrolling interests	$ 52,739		$ 63,718		$ 112,000		$ 132,476
Income from discontinued operations, net of tax			3,610		3,497		5,272
Net income attributable to McDermott International, Inc.	$ 52,739		$ 67,328		$ 115,497		$ 137,748
Weighted average common shares (basic)	235,681,213		234,573,031		235,444,733		234,207,053
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units	1,779,552	[1]	2,971,643	[1]	1,951,964	[1]	2,938,073	[1]
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)	237,460,765		237,544,674		237,396,697		237,145,126
Basic earnings per share:
Income from continuing operations less noncontrolling interests	$ 0.22		$ 0.27		$ 0.48		$ 0.57
Income from discontinued operations, net of tax			$ 0.02		$ 0.01		$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.22		$ 0.29		$ 0.49		$ 0.59
Diluted earnings per share:
Income from continuing operations less noncontrolling interests	$ 0.22		$ 0.27		$ 0.47		$ 0.56
Income from discontinued operations, net of tax			$ 0.02		$ 0.01		$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.22		$ 0.28		$ 0.49		$ 0.58

[1] Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three-month and six-month periods ended June 30, 2012, respectively. Approximately 0.4 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share for each of the three-month and six-month periods ended June 30, 2011.

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Discontinued Operation - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of charter fleet business	$ 61,000,000
Gain on disposal of discontinued operations	$ 257,000
Charter Fleet Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of vessels	10
Secunda International Limited
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of vessels	14

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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	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total income from discontinued operations, net of tax	$ 3,610	$ 3,497		$ 5,272
Charter Fleet Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	11,062	8,184	[1]	20,566
Income before provision for income taxes	2,330	3,497	[1]	4,741
Provision for income taxes	720			1,469
Total income from discontinued operations, net of tax	$ 1,610	$ 3,497	[1]	$ 3,272

[1] Includes the charter fleet operations through March 19, 2012.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2012

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, 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 for oil and gas field developments, we deliver fixed and floating production facilities, pipeline and subsea systems from concept to commissioning. We support these activities with comprehensive project management and procurement services. 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, 2011.

We have included all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation. These unaudited 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 “joint ventures” or “unconsolidated affiliates.” We have eliminated 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. The consolidated balance sheet as of December 31, 2011 reflects the charter fleet business as held for sale. Accordingly, we have presented the notes to our condensed consolidated financial statements on the basis of continuing operations. In addition, certain 2011 amounts in the condensed consolidated statements of cash flows have been reclassified to conform to the 2012 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 for all unbilled revenues. Certain costs are generally excluded from the cost-to-cost method of measuring progress, such as significant costs for materials and third-party subcontractors. Total estimated costs, and resulting contract income, are affected by changes in the expected cost of materials and labor, productivity, 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.

For contracts as to which we are unable to estimate the final profitability except to assure that no loss will ultimately be incurred, 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 reasonably estimable, which we generally determine to be when the contract is approximately 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, except to assure that no loss will be incurred, as deferred profit recognition contracts. We currently have two projects that we account for under our deferred profit recognition policy. These projects contributed revenues equal to costs totaling approximately $13 million and $10.5 million for the three-month periods ended June 30, 2012 and 2011, respectively, and approximately $23 million and $18.4 million for the six-month periods ended June 30, 2012 and 2011, respectively.

Our policy is to account for fixed-price contracts under the completed contract method if we believe that we are unable to reasonably forecast cost to complete at start-up. 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 have accounted for under the completed contract method during the six-month periods ended June 30, 2012 and June 30, 2011.

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, 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.

We include claims revenue for extra work or changes in scope of work in contract value when we consider collection to be probable and the value can be reasonably estimated. Claim revenue is only recorded in our consolidated financial statements to the extent of associated costs. For the three months and six months ended June 30, 2012, approximately $29 million and $39 million, respectively, of revenues equal to costs are reflected in our condensed consolidated financial statements pertaining to claims. Certain of our unconsolidated joint ventures also included approximately $1 million and $5 million of claim revenue and costs in their financial statements for the three months and six months ended June 30, 2012, respectively. The amounts recorded for claims in the three months and six months ended June 30, 2011 were not material to the condensed consolidated financial statements. We continue to actively engage in negotiations with our customers. 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.

As of June 30, 2012, 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 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.

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.

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 recognized in selling, general and administrative expenses as incurred. However, our losses are typically resolved over long periods of time and are often difficult to estimate due to various factors, including the possibility of multiple actions by third parties. Therefore, it is possible future earnings could be affected by changes in our estimates related to these matters.

Cash and Cash Equivalents

Our cash and cash equivalents are highly liquid investments with maturities of three months or less when we purchase them.

We record cash and cash equivalents as restricted when we are unable to freely use such cash and cash equivalents for our general operating purposes. At June 30, 2012, we had restricted cash and cash equivalents totaling $24.0 million, all of which was held in restricted foreign-entity accounts.

Investments

We classify investments available for current operations in the balance sheet as current assets, 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 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. Investments in entities where our ownership interest is less than 20% and where we are unable to exert significant influence are carried at cost.

Accounts Receivable

Accounts Receivable – Trade, Net

A summary of contract receivables is as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	286,781		$	371,223
Completed contracts		54,649			28,369
Retainages		78,151			65,248
Unbilled		5,050			5,650
Less allowances		(22,128	)		(24,682	)
Accounts receivable—trade, net	$	402,503		$	445,808

We expect to invoice our unbilled receivables after contractually specified 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.

The following amounts represent retainages on contracts:

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	78,151	$	65,248
Retainages expected to be collected after one year		72,557		74,539
Total retainages	$	150,708	$	139,787

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 $62.5 million and $53.4 million at June 30, 2012 and December 31, 2011, respectively. The balance primarily consists of transactions with unconsolidated and other affiliates, value-added and other non-income related taxes expected to be refunded, transactions with and advances to employees and receivables associated with our hedging activities. These amounts are expected to be collected within 12 months, and any allowance for doubtful accounts on our accounts receivable—other is based on our estimate of the amount of probable losses due to the inability to collect these amounts (based on historical collection experience and other available information). As of June 30, 2012 and as of December 31, 2011, 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. In addition to defining fair value, the authoritative accounting guidance expands disclosures about fair value measurements and establishes a hierarchy for valuation inputs that emphasizes the use of observable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy established by this topic is broken down as follows:

• 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 may contain provisions under which payments from our customers are denominated in U.S. Dollars and in a foreign currency. 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.

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 other comprehensive income (loss), 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 accumulated other comprehensive loss included in stockholders’ equity are as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(5,999	)	$	(12,438	)
Net loss on investments		(3,275	)		(4,403	)
Net gain (loss) on derivative financial instruments		(18,714	)		3,089
Unrecognized losses on benefit obligations		(82,552	)		(88,278	)
Accumulated other comprehensive loss	$	(110,540	)	$	(102,030	)

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 May 2011, the Financial Accounting Standards Board (“FASB”) issued an update to the topic Fair Value Measurement. This update provides guidance about how fair value should be applied where it is already required or permitted under GAAP. The update does not extend the use of fair value or require additional fair value measurements, but rather provides explanations about how to measure fair value and requires prospective application. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

In June 2011, the FASB issued an update to the topic Comprehensive Income. This update eliminates the option to present components of other comprehensive income as part of the statement of equity and requires those components to instead be presented as one continuous statement with the statement of operations or as a separate, consecutive financial statement. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

In September 2011, the FASB issued an update to the topic Intangibles—Goodwill and Other. This update amends current guidance on the testing of goodwill for impairment, by providing an entity with the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, prior to calculating the fair value of the reporting unit. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

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Carrying Values of Major Classes of Assets and Liabilities Held for Sale included in Condensed Consolidated Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other assets	$ 3,197
Property, plant and equipment-net	45,892
Other assets	9,679
Total long-term assets held for sale	$ 55,571

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Fair Value Measurements - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value Measurements [Line Items]
Net unrealized loss on investments	$ (3,275)	$ (4,403)

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Revenues	$ 889,248	[1]	$ 849,801	[1]	$ 1,616,926	[1]	$ 1,749,041	[1]
Costs and Expenses:
Cost of operations	759,704		703,805		1,357,138		1,451,030
Selling, general and administrative expenses	47,482		60,412		94,093		115,781
(Gain) loss on asset disposals	29		(71)		(197)		(296)
Total costs and expenses	807,215		764,146		1,451,034		1,566,515
Equity in Income (Loss) of Unconsolidated Affiliates	(2,651)		(1,876)		(6,334)		1,551
Operating Income	79,382		83,779		159,558		184,077
Other Income (Expense):
Interest income	1,585		292		3,219		741
Interest expense			(263)				(263)
Gain (loss) on foreign currency-net	1,256		1,372		10,697		(2,860)
Other income (expense)-net	51		(117)		(530)		(1,288)
Total other income (expense)	2,892		1,284		13,386		(3,670)
Income from continuing operations before provision for income taxes and noncontrolling interests	82,274		85,063		172,944		180,407
Provision for Income Taxes	28,345		17,237		57,088		39,816
Income from continuing operations before noncontrolling interests	53,929		67,826		115,856		140,591
Gain on disposal of discontinued operations					257
Income from discontinued operations, net of tax			3,610		3,240		5,272
Total income from discontinued operations, net of tax			3,610		3,497		5,272
Net Income	53,929		71,436		119,353		145,863
Less: Net Income Attributable to Noncontrolling Interests	1,190		4,108		3,856		8,115
Net income attributable to McDermott International, Inc.	$ 52,739		$ 67,328		$ 115,497		$ 137,748
Basic:
Income from continuing operations, less noncontrolling interests	$ 0.22		$ 0.27		$ 0.48		$ 0.57
Income from discontinued operations, net of tax			$ 0.02		$ 0.01		$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.22		$ 0.29		$ 0.49		$ 0.59
Diluted:
Income from continuing operations, less noncontrolling interests	$ 0.22		$ 0.27		$ 0.47		$ 0.56
Income from discontinued operations, net of tax			$ 0.02		$ 0.01		$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.22		$ 0.28		$ 0.49		$ 0.58
Shares used in the computation of earnings per share:
Basic	235,681,213		234,573,031		235,444,733		234,207,053
Diluted	237,460,765		237,544,674		237,396,697		237,145,126

[1] Intersegment transactions included in revenues were not significant for the periods presented.

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Computation of Basic and Diluted Earnings Per Common Share (Parenthetical) (Detail) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share Disclosure [Line Items]
Antidilutive securities excluded from earnings per share computation, shares	1.8	0.4	3.6	0.4

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011
Cash Flows From Operating Activities:
Net income	$ 119,353		$ 145,863
Less: Income from discontinued operations, net of tax	3,497		5,272
Income from continuing operations	115,856		140,591
Non-cash items included in net income:
Depreciation and amortization	45,874		40,099
Equity in (income) loss of unconsolidated affiliates	6,334		(1,551)
Gain on asset disposals and impairments-net	(197)		(296)
Provision (benefit) from deferred taxes	1,194		(11,648)
Pension costs	768		11,588
Other non-cash items	10,090		10,369
Changes in assets and liabilities, net of effects from dispositions:
Accounts receivable	36,237		(54,481)
Net contracts in progress and advance billings on contracts	(150,712)		(257,381)
Accounts payable	4,074		27,589
Accrued and other current liabilities	10,145		40,505
Pension liability and accrued postretirement and employee benefits	15,426		(42,067)
Other assets and liabilities	(3,902)		24,907
Net Cash Provided By (Used In) Operating Activities-Continuing Operations	91,187		(71,776)
Net Cash Provided By Operating Activities-Discontinued Operations			62
Total Cash Provided By (Used In) Operating Activities	91,187		(71,714)
Cash Flows From Investing Activities:
Purchases of property, plant and equipment	(131,661)	[1]	(141,682)	[1]
(Increase) decrease in restricted cash and cash equivalents	(2,062)		39,950
Purchases of available-for-sale securities	(66,266)		(377,018)
Sales and maturities of available-for-sale securities	125,895		424,452
Other investing activities, net	(2,071)		303
Net Cash Used In Investing Activities-Continuing Operations	(76,165)		(53,995)
Net Cash Provided By Investing Activities-Discontinued Operations	60,671
Total Cash Used In Investing Activities	(15,494)		(53,995)
Cash Flows From Financing Activities:
Increase in debt	19,033		30,745
Payment of debt	(2,988)		(4,288)
Distributions to noncontrolling interests	(15,726)
Other financing activities, net	(2,638)		(2,361)
Net Cash Provided By (Used In) Financing Activities-Continuing Operations	(2,319)		24,096
Effects of exchange rate changes on cash and cash equivalents	(168)		45
Net increase (decrease) in cash and cash equivalents	73,206		(101,568)
Cash and cash equivalents at beginning of period	570,854		403,463
Cash and cash equivalents at end of period-Continuing Operations	644,060		301,895
Cash paid during the period for:
Income taxes (net of refunds)	$ 47,403		$ 25,534

[1] Total capital expenditures exclude approximately $1.3 million and $6.9 million in accrued capital expenditures for the six months ended June 30, 2012 and 2011, respectively.

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Derivative Financial Instruments (Detail) (Derivatives Designated as Hedges, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Derivative [Line Items]
Asset Derivatives Fair Value	$ 3,582	$ 2,831
Liability Derivatives Fair Value	15,363	7,860
Accounts receivable-other
Derivative [Line Items]
Asset Derivatives Fair Value	3,582	2,765
Other assets
Derivative [Line Items]
Asset Derivatives Fair Value		66
Accounts payable
Derivative [Line Items]
Liability Derivatives Fair Value	8,177	6,891
Other liabilities
Derivative [Line Items]
Liability Derivatives Fair Value	$ 7,186	$ 969

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2012

Available-For-Sale Securities Measured at Fair Value

The following tables summarize our available-for-sale securities measured at fair value:

	June 30, 2012		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds(1)	$	1,960	$	—	$	1,960	$	—
Commercial paper		64,457		—		64,457		—
Asset-backed securities and collateralized mortgage obligations(2)		8,452		—		2,114		6,338
Corporate notes and bonds(3)		5,762		—		5,762		—
Total	$	80,631	$	—	$	74,293	$	6,338
	December 31, 2011		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	1,923	$	—	$	1,923	$	—
Commercial paper		123,210		—		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		—		2,101		6,030
Corporate notes and bonds		5,742		—		5,742		—
Total	$	139,006	$	—	$	132,976	$	6,030

(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-month and six-month periods ended June 30, 2012 and 2011:

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,177		$	7,503		$	6,030		$	7,372
Total realized and unrealized gains (losses)		456			(39	)		898			465
Principal repayments		(295	)		(392	)		(590	)		(765	)
Balance at end of period	$	6,338		$	7,072		$	6,338		$	7,072

Available-for-Sale Securities with Unrealized Losses Greater Than Twelve Months

The following is a summary of our available-for-sale securities with unrealized losses greater than twelve months:

	Twelve Months or Greater
	Fair Value		Unrealized Losses
June 30, 2012	(Unaudited) (In thousands)
Mutual funds	$	1,960	$	—
Commercial paper		64,457		—
Asset-backed securities and collateralized mortgage obligations		8,452		(3,289	)
Corporate notes and bonds		5,762		—
Total	$	80,631	$	(3,289	)

	Twelve Months or Greater
	Fair Value		Unrealized Losses
December 31, 2011	(In thousands)
Mutual funds	$	1,923	$	—
Commercial paper		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		(4,358	)
Corporate notes and bonds		5,742		—
Total	$	139,006	$	(4,358	)

Estimated Fair Values of Financial Instruments

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

	June 30, 2012						December 31, 2011
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	644,060		$	644,060		$	570,854		$	570,854
Restricted cash and cash equivalents	$	24,024		$	24,024		$	21,962		$	21,962
Investments	$	80,631		$	80,631		$	139,006		$	139,006
Debt	$	109,780		$	113,029		$	93,735		$	96,187
Forward contracts	$	(11,781	)	$	(11,781	)	$	(5,029	)	$	(5,029	)

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Effects of Derivative Instruments on Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Amount of gain (loss) recognized in other comprehensive income (loss)	$ (18,164)	$ 3,311	$ (24,204)	$ 11,378
Cost of operations
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Income (loss) reclassified from AOCI into income: effective portion	676	93	1,970	(42)
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	$ 9,115	$ 147	$ 11,465	$ (1,823)

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2012

Computation of Basic and Diluted Earnings Per Common Share

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited)
	(In thousands, except share and per share amounts)
Income from continuing operations less noncontrolling interests	$	52,739	$	63,718	$	112,000	$	132,476
Income from discontinued operations, net of tax		—		3,610		3,497		5,272
Net income attributable to McDermott International, Inc.	$	52,739	$	67,328	$	115,497	$	137,748
Weighted average common shares (basic)		235,681,213		234,573,031		235,444,733		234,207,053
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		1,779,552		2,971,643		1,951,964		2,938,073
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		237,460,765		237,544,674		237,396,697		237,145,126
Basic earnings per share:
Income from continuing operations less noncontrolling interests		0.22		0.27		0.48		0.57
Income from discontinued operations, net of tax		—		0.02		0.01		0.02
Net income attributable to McDermott International, Inc.		0.22		0.29		0.49		0.59
Diluted earnings per share:
Income from continuing operations less noncontrolling interests		0.22		0.27		0.47		0.56
Income from discontinued operations, net of tax		—		0.02		0.01		0.02
Net income attributable to McDermott International, Inc.		0.22		0.28		0.49		0.58

⁽¹⁾ Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three-month and six-month periods ended June 30, 2012, respectively. Approximately 0.4 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share for each of the three-month and six-month periods ended June 30, 2011.

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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data	Total		Common Stock	Capital In Excess of Par Value	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Stockholders' Equity	Non- Controlling Interests
Beginning balance at Dec. 31, 2010	$ 1,512,267		$ 240,791	$ 1,357,316	$ 100,373	$ (85,735)	$ (163,717)	$ 1,449,028	$ 63,239
Beginning balance (in shares) at Dec. 31, 2010			240,791,473
Net income	145,863				137,748			137,748	8,115
Other comprehensive income, net of tax	35,858	[1]					34,348	34,348	1,510
Exercise of stock options (in shares)			399,239
Exercise of stock options	2,091		399	1,692				2,091
Share vesting (in shares)			961,748
Share vesting			962	(962)
Purchase of treasury shares	(7,035)					(7,035)		(7,035)
Stock-based compensation charges	10,524			10,524				10,524
Distributions to noncontrolling interests	(2,500)								(2,500)
Ending balance at Jun. 30, 2011	1,697,068		242,152	1,368,570	238,121	(92,770)	(129,369)	1,626,704	70,364
Ending balance (in shares) at Jun. 30, 2011			242,152,460
Beginning balance at Dec. 31, 2011	1,733,712		242,416	1,375,976	239,103	(95,827)	(102,030)	1,659,638	74,074
Beginning balance (in shares) at Dec. 31, 2011			242,416,424
Net income	119,353				115,497			115,497	3,856
Other comprehensive income, net of tax	(8,409)	[1]					(8,510)	(8,510)	101
Exercise of stock options (in shares)			158,842
Exercise of stock options	716		159	557				716
Share vesting (in shares)			804,338
Share vesting			805	(805)
Purchase of treasury shares	(2,896)					(2,896)		(2,896)
Stock-based compensation charges	7,810			7,810				7,810
Distributions to noncontrolling interests	(15,726)								(15,726)
Ending balance at Jun. 30, 2012	$ 1,834,560		$ 243,380	$ 1,383,538	$ 354,600	$ (98,723)	$ (110,540)	$ 1,772,255	$ 62,305
Ending balance (in shares) at Jun. 30, 2012			243,379,604

[1] The tax impact on amounts presented in other comprehensive income is not significant.

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Net income	$ 53,929		$ 71,436		$ 119,353		$ 145,863
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs	2,681		5,093		5,726		10,056
Unrealized gain on benefit plan revaluation			9,883				9,883
Unrealized gain (loss) on investments	431		(63)		1,128		636
Realized loss on investments			12				20
Translation adjustments	3,326		1,268		6,439		4,031
Unrealized gain (loss) on derivatives	(18,216)		3,311		(24,103)		11,378
Realized loss on derivatives	1,107		77		2,401		(146)
Other comprehensive income (loss), net of tax	(10,671)	[1]	19,581	[1]	(8,409)	[1]	35,858	[1]
Total Comprehensive Income	43,258		91,017		110,944		181,721
Less: Comprehensive Income Attributable to Noncontrolling Interests	1,138		4,499		3,957		9,625
Comprehensive Income Attributable to McDermott International, Inc.	$ 42,120		$ 86,518		$ 106,987		$ 172,096

[1] The tax impact on amounts presented in other comprehensive income is not significant.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2012

Nature of Operations

Nature of Operations

McDermott International, Inc. (“MII”), a corporation incorporated under the laws of the Republic of Panama, 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 for oil and gas field developments, we deliver fixed and floating production facilities, pipeline and subsea systems from concept to commissioning. We support these activities with comprehensive project management and procurement services. 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, 2011.

We have included all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation. These unaudited 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 “joint ventures” or “unconsolidated affiliates.” We have eliminated 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. The consolidated balance sheet as of December 31, 2011 reflects the charter fleet business as held for sale. Accordingly, we have presented the notes to our condensed consolidated financial statements on the basis of continuing operations. In addition, certain 2011 amounts in the condensed consolidated statements of cash flows have been reclassified to conform to the 2012 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 for all unbilled revenues. Certain costs are generally excluded from the cost-to-cost method of measuring progress, such as significant costs for materials and third-party subcontractors. Total estimated costs, and resulting contract income, are affected by changes in the expected cost of materials and labor, productivity, 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.

For contracts as to which we are unable to estimate the final profitability except to assure that no loss will ultimately be incurred, 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 reasonably estimable, which we generally determine to be when the contract is approximately 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, except to assure that no loss will be incurred, as deferred profit recognition contracts. We currently have two projects that we account for under our deferred profit recognition policy. These projects contributed revenues equal to costs totaling approximately $13 million and $10.5 million for the three-month periods ended June 30, 2012 and 2011, respectively, and approximately $23 million and $18.4 million for the six-month periods ended June 30, 2012 and 2011, respectively.

Our policy is to account for fixed-price contracts under the completed contract method if we believe that we are unable to reasonably forecast cost to complete at start-up. 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 have accounted for under the completed contract method during the six-month periods ended June 30, 2012 and June 30, 2011.

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, 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.

We include claims revenue for extra work or changes in scope of work in contract value when we consider collection to be probable and the value can be reasonably estimated. Claim revenue is only recorded in our consolidated financial statements to the extent of associated costs. For the three months and six months ended June 30, 2012, approximately $29 million and $39 million, respectively, of revenues equal to costs are reflected in our condensed consolidated financial statements pertaining to claims. Certain of our unconsolidated joint ventures also included approximately $1 million and $5 million of claim revenue and costs in their financial statements for the three months and six months ended June 30, 2012, respectively. The amounts recorded for claims in the three months and six months ended June 30, 2011 were not material to the condensed consolidated financial statements. We continue to actively engage in negotiations with our customers. 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.

As of June 30, 2012, 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 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.

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.

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 recognized in selling, general and administrative expenses as incurred. However, our losses are typically resolved over long periods of time and are often difficult to estimate due to various factors, including the possibility of multiple actions by third parties. Therefore, it is possible future earnings could be affected by changes in our estimates related to these matters.

Cash and Cash Equivalents

Cash and Cash Equivalents

Our cash and cash equivalents are highly liquid investments with maturities of three months or less when we purchase them.

We record cash and cash equivalents as restricted when we are unable to freely use such cash and cash equivalents for our general operating purposes. At June 30, 2012, we had restricted cash and cash equivalents totaling $24.0 million, all of which was held in restricted foreign-entity accounts.

Investments

Investments

We classify investments available for current operations in the balance sheet as current assets, 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 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. Investments in entities where our ownership interest is less than 20% and where we are unable to exert significant influence are carried at cost.

Accounts Receivable

Accounts Receivable

Accounts Receivable – Trade, Net

A summary of contract receivables is as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	286,781		$	371,223
Completed contracts		54,649			28,369
Retainages		78,151			65,248
Unbilled		5,050			5,650
Less allowances		(22,128	)		(24,682	)
Accounts receivable—trade, net	$	402,503		$	445,808

We expect to invoice our unbilled receivables after contractually specified 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.

The following amounts represent retainages on contracts:

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	78,151	$	65,248
Retainages expected to be collected after one year		72,557		74,539
Total retainages	$	150,708	$	139,787

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 $62.5 million and $53.4 million at June 30, 2012 and December 31, 2011, respectively. The balance primarily consists of transactions with unconsolidated and other affiliates, value-added and other non-income related taxes expected to be refunded, transactions with and advances to employees and receivables associated with our hedging activities. These amounts are expected to be collected within 12 months, and any allowance for doubtful accounts on our accounts receivable—other is based on our estimate of the amount of probable losses due to the inability to collect these amounts (based on historical collection experience and other available information). As of June 30, 2012 and as of December 31, 2011, 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. In addition to defining fair value, the authoritative accounting guidance expands disclosures about fair value measurements and establishes a hierarchy for valuation inputs that emphasizes the use of observable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy established by this topic is broken down as follows:

• 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 may contain provisions under which payments from our customers are denominated in U.S. Dollars and in a foreign currency. 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.

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 other comprehensive income (loss), 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 accumulated other comprehensive loss included in stockholders’ equity are as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(5,999	)	$	(12,438	)
Net loss on investments		(3,275	)		(4,403	)
Net gain (loss) on derivative financial instruments		(18,714	)		3,089
Unrecognized losses on benefit obligations		(82,552	)		(88,278	)
Accumulated other comprehensive loss	$	(110,540	)	$	(102,030	)

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 May 2011, the Financial Accounting Standards Board (“FASB”) issued an update to the topic Fair Value Measurement. This update provides guidance about how fair value should be applied where it is already required or permitted under GAAP. The update does not extend the use of fair value or require additional fair value measurements, but rather provides explanations about how to measure fair value and requires prospective application. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

In June 2011, the FASB issued an update to the topic Comprehensive Income. This update eliminates the option to present components of other comprehensive income as part of the statement of equity and requires those components to instead be presented as one continuous statement with the statement of operations or as a separate, consecutive financial statement. The update is effective for fiscal years and interim periods beginning after December 15, 2011. The adoption of this update did not have a material impact on our condensed consolidated financial statements.

In September 2011, the FASB issued an update to the topic Intangibles—Goodwill and Other. This update amends current guidance on the testing of goodwill for impairment, by providing an entity with the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, prior to calculating the fair value of the reporting unit. The update is effective for fiscal years and interim periods beginning after December 15, 2011. 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	6 Months Ended
	Jun. 30, 2012	Jul. 27, 2012
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Trading Symbol	MDR
Entity Registrant Name	MCDERMOTT INTERNATIONAL INC
Entity Central Index Key	0000708819
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		235,810,640

XML

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2012

Contracts Receivables

A summary of contract receivables is as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	286,781		$	371,223
Completed contracts		54,649			28,369
Retainages		78,151			65,248
Unbilled		5,050			5,650
Less allowances		(22,128	)		(24,682	)
Accounts receivable—trade, net	$	402,503		$	445,808

Retainages on Contracts

The following amounts represent retainages on contracts:

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	78,151	$	65,248
Retainages expected to be collected after one year		72,557		74,539
Total retainages	$	150,708	$	139,787

Accumulated Other Comprehensive Loss included in Stockholders' Equity

The components of accumulated other comprehensive loss included in stockholders’ equity are as follows:

	June 30, 2012			December 31, 2011
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(5,999	)	$	(12,438	)
Net loss on investments		(3,275	)		(4,403	)
Net gain (loss) on derivative financial instruments		(18,714	)		3,089
Unrecognized losses on benefit obligations		(82,552	)		(88,278	)
Accumulated other comprehensive loss	$	(110,540	)	$	(102,030	)

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 644,060	$ 570,854
Restricted cash and cash equivalents	24,024	21,962
Investments	48,970	109,522
Accounts receivable-trade, net	402,503	445,808
Accounts receivable-other	62,478	53,386
Contracts in progress	471,010	287,390
Deferred income taxes	12,316	11,931
Assets held for sale		3,197
Other current assets	38,349	33,135
Total Current Assets	1,703,710	1,537,185
Property, Plant and Equipment	2,087,422	1,958,877
Less accumulated depreciation	(898,635)	(857,012)
Net Property, Plant and Equipment	1,188,787	1,101,865
Assets Held for Sale		55,571
Investments	31,661	29,484
Goodwill	41,202	41,202
Investments in Unconsolidated Affiliates	37,873	42,659
Other Assets	187,809	184,848
Total Assets	3,191,042	2,992,814
Current Liabilities:
Notes payable and current maturities of long-term debt	14,573	8,941
Accounts payable	318,743	315,514
Accrued liabilities	337,076	309,515
Advance billings on contracts	353,457	320,438
Deferred income taxes	13,195	13,187
Income taxes payable	55,197	54,181
Total Current Liabilities	1,092,241	1,021,776
Long-Term Debt	95,207	84,794
Self-Insurance	26,214	23,585
Pension Liability	19,652	21,295
Other Liabilities	123,168	107,652
Commitments and Contingencies
Stockholders' Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 243,379,604 and 242,416,424 shares at June 30, 2012 and December 31, 2011, respectively	243,380	242,416
Capital in excess of par value	1,383,538	1,375,976
Retained earnings	354,600	239,103
Treasury stock, at cost, 7,874,779 and 7,359,983 shares at June 30, 2012 and December 31, 2011, respectively	(98,723)	(95,827)
Accumulated other comprehensive loss	(110,540)	(102,030)
Stockholders' Equity-McDermott International, Inc.	1,772,255	1,659,638
Noncontrolling Interests	62,305	74,074
Total Equity	1,834,560	1,733,712
Total Liabilities and Equity	$ 3,191,042	$ 2,992,814

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2012

FAIR VALUE MEASUREMENTS

NOTE 5 – FAIR VALUE MEASUREMENTS

The following tables summarize our available-for-sale securities measured at fair value:

	June 30, 2012		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds(1)	$	1,960	$	—	$	1,960	$	—
Commercial paper		64,457		—		64,457		—
Asset-backed securities and collateralized mortgage obligations(2)		8,452		—		2,114		6,338
Corporate notes and bonds(3)		5,762		—		5,762		—
Total	$	80,631	$	—	$	74,293	$	6,338
	December 31, 2011		Level 1		Level 2		Level 3
	(In thousands)
Mutual funds	$	1,923	$	—	$	1,923	$	—
Commercial paper		123,210		—		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		—		2,101		6,030
Corporate notes and bonds		5,742		—		5,742		—
Total	$	139,006	$	—	$	132,976	$	6,030

(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 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-month and six-month periods ended June 30, 2012 and 2011:

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Balance at beginning of period	$	6,177		$	7,503		$	6,030		$	7,372
Total realized and unrealized gains (losses)		456			(39	)		898			465
Principal repayments		(295	)		(392	)		(590	)		(765	)
Balance at end of period	$	6,338		$	7,072		$	6,338		$	7,072

Unrealized Losses on Investments

Our net unrealized loss on investments was $3.3 million and $4.4 million at June 30, 2012 and December 31, 2011, 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, continue to perform and we currently do not have the intent to sell these securities before their anticipated recovery. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired as of June 30, 2012. 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 with unrealized losses greater than twelve months:

	Twelve Months or Greater
	Fair Value		Unrealized Losses
June 30, 2012	(Unaudited) (In thousands)
Mutual funds	$	1,960	$	—
Commercial paper		64,457		—
Asset-backed securities and collateralized mortgage obligations		8,452		(3,289	)
Corporate notes and bonds		5,762		—
Total	$	80,631	$	(3,289	)

	Twelve Months or Greater
	Fair Value		Unrealized Losses
December 31, 2011	(In thousands)
Mutual funds	$	1,923	$	—
Commercial paper		123,210		—
Asset-backed securities and collateralized mortgage obligations		8,131		(4,358	)
Corporate notes and bonds		5,742		—
Total	$	139,006	$	(4,358	)

Other Financial Instruments

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

Cash and cash equivalents and restricted cash and cash equivalents. The carrying amounts that we have reported in the accompanying unaudited condensed consolidated balance sheets for cash and cash equivalents and restricted cash and cash equivalents approximate their fair values.

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

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

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

	June 30, 2012						December 31, 2011
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Cash and cash equivalents	$	644,060		$	644,060		$	570,854		$	570,854
Restricted cash and cash equivalents	$	24,024		$	24,024		$	21,962		$	21,962
Investments	$	80,631		$	80,631		$	139,006		$	139,006
Debt	$	109,780		$	113,029		$	93,735		$	96,187
Forward contracts	$	(11,781	)	$	(11,781	)	$	(5,029	)	$	(5,029	)

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DERIVATIVE FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2012

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 accumulated other comprehensive income (loss) (“AOCI”) until the hedged item is recognized in earnings; (2) offset against the change in fair value of the hedged firm commitment through earnings; or (3) recognized immediately in earnings. At the inception and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows or fair value attributable to the hedged risk. We exclude from our assessment of effectiveness the portion of the fair value of the forward contracts attributable to the difference between spot exchange rates and forward exchange rates. The ineffective portion of a derivative’s change in fair value and any portion excluded from the assessment of effectiveness are immediately recognized in earnings. Gains and losses on derivative financial instruments that are immediately recognized in earnings are included as a component of gain (loss) on foreign currency—net in our condensed consolidated statements of income. At June 30, 2012, we had designated the majority of our foreign currency forward-exchange contracts as cash flow hedging instruments.

At June 30, 2012, we had deferred $18.7 million of net losses on these derivative financial instruments in AOCI, and we expect to reclassify approximately $2.5 million of deferred losses out of AOCI over the next 12 months.

At June 30, 2012, our derivative financial instruments consisted of foreign currency forward-exchange contracts. The notional value of our outstanding derivative contracts totaled approximately $1.0 billion at June 30, 2012, with maturities extending through 2017. Of this amount, approximately $750 million is associated with various foreign currency expenditures we expect to incur on one of our EPCI projects. The fair value of these contracts at June 30, 2012 was in a net liability position totaling $11.8 million. The fair value of outstanding derivative instruments is determined using observable financial market inputs, such as quoted market prices, and is classified as Level 2 in nature.

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable–other	$	3,582	$	2,765
Other assets		—		66
Total asset derivatives	$	3,582	$	2,831
Accounts payable	$	8,177	$	6,891
Other liabilities		7,186		969
Total liability derivatives	$	15,363	$	7,860

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,					Six Months Ended June 30,
	2012			2011		2012			2011
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Amount of gain (loss) recognized in other comprehensive income (loss)	$	(18,164	)	$	3,311	$	(24,204	)	$	11,378
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	676		$	93	$	1,970		$	(42	)
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain (loss) on foreign currency – net	$	9,115		$	147	$	11,465		$	(1,823	)

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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2012

Total Stock-Based Compensation Expense Recognized

Total stock-based compensation expense recognized for the three months and six months ended June 30, 2012 and 2011 is as follows:

	Three Months  Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited) (In thousands)
Stock Options	$	1,023	$	1,062	$	2,017	$	1,870
Restricted Stock and Restricted Stock Units		2,258		3,466		3,718		8,151
Performance Shares and Deferred Stock Units		1,235		381		2,075		503
Total	$	4,516	$	4,909	$	7,810	$	10,524

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DISCONTINUED OPERATION (Tables)

6 Months Ended

Jun. 30, 2012

Selected Financial Information Regarding Results of Operations of Charter Fleet Business

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012(1)		2011
	(Unaudited) (In thousands)
Revenues	$	—	$	11,062	$	8,184	$	20,566
Income before provision for income taxes		—		2,330		3,497		4,741
Provision for income taxes		—		720		—		1,469
Income from discontinued operations, net of tax	$	—	$	1,610	$	3,497	$	3,272

⁽¹⁾   Includes the charter fleet operations through March 19, 2012.

Carrying Values of Major Classes of Assets and Liabilities Held for Sale included in Condensed Consolidated Balance Sheet

The following table presents the carrying values of the major classes of assets and liabilities held for sale that are included in our condensed consolidated balance sheet as of December 31, 2011:

	December 31, 2011
	(In thousands)
Other assets	$	3,197
Property, plant and equipment—net		45,892
Other assets		9,679
Total long-term assets held for sale	$	55,571

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SEGMENT REPORTING

6 Months Ended

Jun. 30, 2012

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 June  30,						Six Months Ended June  30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Revenues(1):
Asia Pacific	$	338,464		$	547,833		$	635,499		$	1,022,646
Atlantic		110,304			52,552			209,908			92,446
Middle East		440,480			249,416			771,519			633,949
Total revenues	$	889,248		$	849,801		$	1,616,926		$	1,749,041
Operating income (loss):
Asia Pacific	$	46,605		$	58,511		$	104,039		$	97,390
Atlantic		(14,042	)		(16,607	)		(26,035	)		(34,244	)
Middle East		46,819			41,875			81,554			120,931
Total operating income	$	79,382		$	83,779		$	159,558		$	184,077
Capital expenditures(2):
Asia Pacific	$	21,666		$	11,431		$	38,231		$	38,417
Atlantic		52,615			54,148			64,490			82,900
Middle East		10,935			5,781			26,711			13,492
Corporate and Other		1,694			6,336			2,229			6,873
Total capital expenditures	$	86,910		$	77,696		$	131,661		$	141,682
Depreciation and amortization:
Asia Pacific	$	5,235		$	6,616		$	10,092		$	12,352
Atlantic		6,111			3,448			13,295			7,241
Middle East		7,554			6,566			15,048			13,929
Corporate and Other		3,698			2,944			7,439			6,577
Total depreciation and amortization	$	22,598		$	19,574		$	45,874		$	40,099

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

⁽²⁾ Total capital expenditures exclude approximately $1.3 million and $6.9 million in accrued capital expenditures for the six months ended June 30, 2012 and 2011, respectively.

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	1,187,914	$	934,134
Atlantic		345,218		419,258
Middle East		1,222,580		1,065,478
Corporate and Other		435,330		515,176
Total continuing operations		3,191,042		2,934,046
Total discontinued operations		—		58,768
Total assets	$	3,191,042	$	2,992,814

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STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2012

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. 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 recognized for the three months and six months ended June 30, 2012 and 2011 is as follows:

	Three Months  Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited) (In thousands)
Stock Options	$	1,023	$	1,062	$	2,017	$	1,870
Restricted Stock and Restricted Stock Units		2,258		3,466		3,718		8,151
Performance Shares and Deferred Stock Units		1,235		381		2,075		503
Total	$	4,516	$	4,909	$	7,810	$	10,524

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2012

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 June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited)
	(In thousands, except share and per share amounts)
Income from continuing operations less noncontrolling interests	$	52,739	$	63,718	$	112,000	$	132,476
Income from discontinued operations, net of tax		—		3,610		3,497		5,272
Net income attributable to McDermott International, Inc.	$	52,739	$	67,328	$	115,497	$	137,748
Weighted average common shares (basic)		235,681,213		234,573,031		235,444,733		234,207,053
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		1,779,552		2,971,643		1,951,964		2,938,073
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards (diluted)		237,460,765		237,544,674		237,396,697		237,145,126
Basic earnings per share:
Income from continuing operations less noncontrolling interests		0.22		0.27		0.48		0.57
Income from discontinued operations, net of tax		—		0.02		0.01		0.02
Net income attributable to McDermott International, Inc.		0.22		0.29		0.49		0.59
Diluted earnings per share:
Income from continuing operations less noncontrolling interests		0.22		0.27		0.47		0.56
Income from discontinued operations, net of tax		—		0.02		0.01		0.02
Net income attributable to McDermott International, Inc.		0.22		0.28		0.49		0.58

⁽¹⁾ Approximately 1.8 million and 3.6 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share because they were antidilutive for the three-month and six-month periods ended June 30, 2012, respectively. Approximately 0.4 million shares underlying outstanding stock-based awards were excluded from the computation of diluted earnings per share for each of the three-month and six-month periods ended June 30, 2011.

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2012

COMMITMENTS AND CONTINGENCIES

NOTE 9 – COMMITMENTS AND CONTINGENCIES

Litigation

The following discussion presents information relating to pending litigation discussed in Note 13 – Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2011. 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 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”), and other environmental laws can impose liability for the entire cost of cleanup on any of the potentially responsible parties, regardless of fault or the lawfulness of the original conduct. Generally, however, where there are multiple responsible parties, a final allocation of costs is made based on the amount and type of wastes disposed of by each party and the number of financially viable parties, although this may not be the case with respect to any particular site. We have not been determined to be a major contributor of wastes to any of these sites. On the basis of our relative contribution of waste to each site, we expect our share of the ultimate liability for the various sites will not have a material adverse effect on our consolidated financial condition, results of operations or cash flows in any given year.

At June 30, 2012 we had total environmental reserves of $1.2 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 that we have provided for in our consolidated financial statements.

Contracts Containing Liquidated Damages Provisions

Some of our contracts contain provisions that require us to pay liquidated damages if we are responsible for the failure to meet specified contractual milestone dates and the applicable customer asserts a claim under these provisions. These contracts define the conditions under which our customers may make claims against us for liquidated damages. In many cases in which we have historically had potential exposure for liquidated damages, such damages ultimately were not asserted by our customers. As of June 30, 2012, it is possible that we may incur liabilities for liquidated damages aggregating approximately $41 million, of which approximately $18 million has been recorded in our financial statements, based on our actual or projected failure to meet certain specified contractual milestone dates. The date range during which these potential liquidated damages could arise is from June 2011 to March 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.

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Derivative Financial Instruments - Additional Information (Detail) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Net gain (loss) on derivative financial instruments	$ (18,714,000)	$ 3,089,000
Net deferred gains expected to be reclassified out of AOCI over the next 12 months	(2,500,000)
Notional value of outstanding derivative contracts	1,000,000,000
Notional value of foreign currency forward-exchange contracts, maturity date	2017
Notional value of foreign currency forward-exchange contracts	750,000,000
Foreign currency cash flow hedge contracts, fair value	$ (11,800,000)

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Financial Instruments

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2012		December 31, 2011
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Location
Accounts receivable–other	$	3,582	$	2,765
Other assets		—		66
Total asset derivatives	$	3,582	$	2,831
Accounts payable	$	8,177	$	6,891
Other liabilities		7,186		969
Total liability derivatives	$	15,363	$	7,860

Effects of Derivative Instruments on Financial Statements

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,					Six Months Ended June 30,
	2012			2011		2012			2011
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Amount of gain (loss) recognized in other comprehensive income (loss)	$	(18,164	)	$	3,311	$	(24,204	)	$	11,378
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	676		$	93	$	1,970		$	(42	)
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Gain (loss) on foreign currency – net	$	9,115		$	147	$	11,465		$	(1,823	)

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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011		Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Percentage of completion to recognize expected profit	70.00%				70.00%
Revenues	$ 889,248,000	[1]	$ 849,801,000	[1]	$ 1,616,926,000	[1]	$ 1,749,041,000	[1]
Cost of operations	759,704,000		703,805,000		1,357,138,000		1,451,030,000
Restricted cash and cash equivalents, aggregate amount	24,024,000				24,024,000				21,962,000
Accounts receivable - other	62,500,000				62,500,000				53,400,000
Deferred profit recognition contracts
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of projects accounted under deferred profit recognition policy					2
Atlantic
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Revenues	110,304,000		52,552,000		209,908,000		92,446,000
Atlantic | Deferred profit recognition contracts
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Revenues	13,000,000		10,500,000		23,000,000		18,400,000
Cost of operations	13,000,000		10,500,000		23,000,000		18,400,000
Charter Fleet Business
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of vessels					10
Secunda International Limited
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of vessels					14
Consolidated Entities
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Revenues	29,000,000				39,000,000
Cost of operations	29,000,000				39,000,000
Unconsolidated joint ventures
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Revenues	1,000,000				5,000,000
Cost of operations	$ 1,000,000				$ 5,000,000
Minimum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Equity method of accounting investment ownership	20.00%				20.00%
Maximum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Equity method of accounting investment ownership	50.00%				50.00%

[1] Intersegment transactions included in revenues were not significant for the periods presented.

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended			1 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 Minimum	Jun. 30, 2012 Maximum	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 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	$ 1.2
Aggregate possible liquidated damage due to failure to meet specified contractual milestone dates, offshore oil and gas construction segment	41
Liquidated damage contingencies, accrued	$ 18
Trigger dates, potential liquidated damages		2011-06	2013-03

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Available-for-Sale Securities with Unrealized Losses Greater Than Twelve Months (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Twelve months or greater fair value	$ 80,631	$ 139,006
Twelve months or greater unrealized losses	(3,289)	(4,358)
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Twelve months or greater fair value	1,960	1,923
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Twelve months or greater fair value	64,457	123,210
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Twelve months or greater fair value	8,452	8,131
Twelve months or greater unrealized losses	(3,289)	(4,358)
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Twelve months or greater fair value	$ 5,762	$ 5,742

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	243,379,604	242,416,424
Treasury stock, shares	7,874,779	7,359,983

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PENSION PLANS

6 Months Ended

Jun. 30, 2012

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 employees who may have otherwise obtained benefits under the TCN Plan.

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

	Domestic Plans
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Interest cost	$	6,569		$	7,155		$	13,262		$	14,230
Expected return on plan assets		(8,905	)		(7,550	)		(17,905	)		(14,075	)
Recognized net actuarial loss and other		2,228			4,482			4,818			8,730
Curtailments		—			(8	)		—			(8	)
Net periodic pension (benefit) cost	$	(108	)	$	4,079		$	175		$	8,877

	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Service cost	$	—		$	686		$	—		$	1,371
Interest cost		461			595			922			1,190
Expected return on plan assets		(611	)		(613	)		(1,222	)		(1,226	)
Amortization of prior service cost		—			4			—			8
Recognized net actuarial loss		447			684			893			1,368
Net periodic benefit cost	$	297		$	1,356		$	593		$	2,711

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Contract Receivables (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages	$ 78,151	$ 65,248
Unbilled	5,050	5,650
Less allowances	(22,128)	(24,682)
Accounts receivable-trade, net	402,503	445,808
Contracts in progress
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contracts receivable	286,781	371,223
Completed contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contracts receivable	$ 54,649	$ 28,369

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Available-for-Sale Securities Measured at Fair Value (Parenthetical) (Detail) (Maximum)	Jun. 30, 2012
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, maturities	26 years
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, maturities	3 years

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PENSION PLANS (Tables)

6 Months Ended

Jun. 30, 2012

Net Periodic Benefit Cost

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

	Domestic Plans
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Interest cost	$	6,569		$	7,155		$	13,262		$	14,230
Expected return on plan assets		(8,905	)		(7,550	)		(17,905	)		(14,075	)
Recognized net actuarial loss and other		2,228			4,482			4,818			8,730
Curtailments		—			(8	)		—			(8	)
Net periodic pension (benefit) cost	$	(108	)	$	4,079		$	175		$	8,877

	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(Unaudited) (In thousands)
Service cost	$	—		$	686		$	—		$	1,371
Interest cost		461			595			922			1,190
Expected return on plan assets		(611	)		(613	)		(1,222	)		(1,226	)
Amortization of prior service cost		—			4			—			8
Recognized net actuarial loss		447			684			893			1,368
Net periodic benefit cost	$	297		$	1,356		$	593		$	2,711