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, 2011

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 25, 2011 was 234,714,743.

McDERMOTT INTERNATIONAL, INC.

INDEX - FORM 10-Q

	PAGE
PART I - FINANCIAL INFORMATION
Item 1 – Condensed Consolidated Financial Statements		3
Condensed Consolidated Statements of Income—(Unaudited) Three and Six Months Ended June  30, 2011 and 2010		3
Condensed Consolidated Statements of Comprehensive Income—(Unaudited) Three and Six Months Ended June 30, 2011 and 2010		4
Condensed Consolidated Balance Sheets—(Unaudited) June 30, 2011 and December 31, 2010		5
Condensed Consolidated Statements of Cash Flows—(Unaudited) Six Months Ended June  30, 2011 and 2010		6
Condensed Consolidated Statements of Equity—(Unaudited) Six Months Ended June 30, 2011 and 2010		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 1A – Risk Factors		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. Condensed Consolidated Financial Statements

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands, except share and per share amounts)
Revenues	$	849,801		$	627,144		$	1,749,041		$	1,132,026
Costs and Expenses:
Cost of operations		703,805			475,839			1,451,030			855,045
Gain on asset disposals and impairments – net		(71	)		(226	)		(296	)		(2,306	)
Selling, general and administrative expenses		60,412			52,674			115,781			103,812
Total costs and expenses		764,146			528,287			1,566,515			956,551
Equity in Income (Loss) of Unconsolidated Affiliates		(1,876	)		(715	)		1,551			(4,146	)
Operating Income		83,779			98,142			184,077			171,329
Other Income (Expense):
Interest income		292			335			741			825
Interest expense		(263	)		(2,117	)		(263	)		(2,279	)
Other income (expense) – net		1,255			722			(4,148	)		(728	)
Total other income (expense)		1,284			(1,060	)		(3,670	)		(2,182	)
Income from continuing operations before provision for income taxes and noncontrolling interests		85,063			97,082			180,407			169,147
Provision for Income Taxes		17,237			12,905			39,816			25,144
Income from continuing operations before noncontrolling interests		67,826			84,177			140,591			144,003
Loss on disposal of discontinued operations		—			(66,218	)		—			(90,420	)
Income from discontinued operations, net of tax		3,610			63,561			5,272			96,142
Total income (loss) from discontinued operations, net of tax		3,610			(2,657	)		5,272			5,722
Net Income		71,436			81,520			145,863			149,725
Less: Net Income Attributable to Noncontrolling Interests		4,108			5,486			8,115			13,750
Net Income Attributable to McDermott International, Inc.	$	67,328		$	76,034		$	137,748		$	135,975
Earnings per Common Share:
Basic:
Income from continuing operations, less noncontrolling interests		0.27			0.34			0.57			0.56
Income (loss) from discontinued operations, net of tax		0.02			(0.01	)		0.02			0.02
Net income attributable to McDermott International, Inc.		0.29			0.33			0.59			0.59
Diluted:
Income from continuing operations, less noncontrolling interests		0.27			0.34			0.56			0.56
Income (loss) from discontinued operations, net of tax		0.02			(0.01	)		0.02			0.02
Net income attributable to McDermott International, Inc.		0.28			0.32			0.58			0.58
Shares used in the computation of earnings per share (Note 8):
Basic		234,573,031			231,847,145			234,207,053			231,335,723
Diluted		237,544,674			234,423,546			237,145,126			234,588,291

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,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Net Income	$	71,436		$	81,520		$	145,863		$	149,725
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs(1)		5,093			14,755			10,056			29,493
Unrealized gain on benefit plan revaluation		9,883			—			9,883			—
Unrealized gain (loss) on investments		(63	)		150			636			1,065
Realized loss on investments		12			24			20			162
Translation adjustments		1,268			(11,154	)		4,031			(7,655	)
Unrealized gain (loss) on derivatives		3,311			(9,311	)		11,378			(13,317	)
Realized loss on derivatives		77			3,928			(146	)		4,799
Other comprehensive income (loss), net of tax		19,581			(1,608	)		35,858			14,547
Total Comprehensive Income	$	91,017		$	79,912		$	181,721		$	164,272
Less: Comprehensive Income Attributable to Noncontrolling Interests		4,499			5,461			9,625			13,741
Comprehensive Income Attributable to McDermott International, Inc.	$	86,518		$	74,451		$	172,096		$	150,531

⁽¹⁾  Amortization of benefit plan costs for the three-month and six-month periods ended June 30, 2010 is shown net of tax of $8.1 million and $16.2 million, respectively.

See accompanying notes to condensed consolidated financial statements.

4

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

	June 30, 2011			December 31, 2010
	(Unaudited) (In thousands, except share and per share amounts)
Assets
Current Assets:
Cash and cash equivalents	$	301,895		$	403,463
Restricted cash and cash equivalents (Note 1)		157,911			197,861
Investments		173,469			209,463
Accounts receivable—trade, net (Note 1)		357,242			323,497
Accounts receivable—other		52,291			28,447
Contracts in progress		165,603			65,853
Deferred income taxes		20,170			10,323
Assets held for sale (Note 2)		13,875			10,161
Other current assets		42,889			36,570
Total Current Assets		1,285,345			1,285,638
Property, Plant and Equipment		1,863,865			1,720,040
Less accumulated depreciation		(842,930	)		(804,471	)
Net Property, Plant and Equipment		1,020,935			915,569
Assets Held for Sale (Note 2)		78,110			77,150
Investments		65,151			75,742
Goodwill		41,202			41,202
Investments in Unconsolidated Affiliates		46,524			45,016
Other Assets		170,030			158,371
Total Assets	$	2,707,297		$	2,598,688
Liabilities and Equity
Current Liabilities:
Notes payable and current maturities of long-term debt	$	7,357		$	8,547
Accounts payable		280,450			252,974
Accrued liabilities		287,983			286,831
Advance billings on contracts		92,422			250,053
Deferred income taxes		3,479			12,849
Income taxes payable		56,591			32,851
Liabilities associated with assets held for sale (Note 2)		22,912			20,902
Total Current Liabilities		751,194			865,007
Long-Term Debt		74,505			46,748
Self-Insurance		37,590			35,655
Pension Liability		44,495			52,831
Other Liabilities		102,445			86,180
Commitments and Contingencies (Note 9)
Stockholders’ Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 242,152,460 and 240,791,473 shares at June 30, 2011 and December 31, 2010, respectively		242,152			240,791
Capital in excess of par value		1,368,570			1,357,316
Retained earnings		238,121			100,373
Treasury stock, at cost, 7,185,432 and 6,906,262 shares at June 30, 2011 and December 31, 2010, respectively		(92,770	)		(85,735	)
Accumulated other comprehensive loss		(129,369	)		(163,717	)
Stockholders’ Equity—McDermott International, Inc.		1,626,704			1,449,028
Noncontrolling Interests		70,364			63,239
Total Equity		1,697,068			1,512,267
Total Liabilities and Equity	$	2,707,297		$	2,598,688

See accompanying notes to condensed consolidated financial statements.

5

McDERMOTT INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Six Months Ended June 30,
	2011			2010
	(Unaudited)
	(In thousands)
Cash Flows From Operating Activities:
Net income	$	145,863		$	149,725
Less: Income from discontinued operations, net of tax		5,272			5,722
Income from continuing operations	$	140,591		$	144,003
Non-cash items included in net income:
Depreciation and amortization		40,099			37,823
Equity in (income) loss of unconsolidated affiliates		(1,551	)		4,146
Gain on asset disposals and impairments—net		(296	)		(2,306	)
Provision (benefit) from deferred taxes		(11,648	)		29,667
Pension costs		11,588			13,301
Other non-cash items		10,369			26,379
Changes in assets and liabilities:
Accounts receivable		(54,481	)		69,764
Net contracts in progress and advance billings on contracts		(257,381	)		88,602
Accounts payable		27,589			(25,870	)
Accrued and other current liabilities		40,505			9,265
Pension liability and accrued postretirement and employee benefits		(42,067	)		(146,916	)
Other		24,907			(108,250	)
Net Cash Provided By (Used In) Operating Activities—Continuing Operations		(71,776	)		139,608
Cash Flows From Investing Activities:
Purchases of property, plant and equipment		(141,682	)		(97,616	)
(Increase) decrease in restricted cash and cash equivalents		39,950			(76,504	)
Net decrease in available-for-sale securities		47,434			60,671
Other investing activities, net		303			2,985
Net Cash Used In Investing Activities—Continuing Operations		(53,995	)		(110,464	)
Cash Flows From Financing Activities:
Payment of debt		(4,288	)		(4,317	)
Debt issuance costs		(261	)		(12,851	)
Increase in debt		30,745			—
Dividend received from B&W		—			100,000
Other financing activities, net		(2,100	)		290
Net Cash Provided By Financing Activities—Continuing Operations		24,096			83,122
Effects of exchange rate changes on cash and cash equivalents		107			20
Net increase (decrease) in cash and cash equivalents		(101,568	)		112,286
Cash and cash equivalents at beginning of period		403,463			428,298
Cash and cash equivalents at end of period—Continuing Operations	$	301,895		$	540,584
Supplemental Disclosures of Cash Flow Information:
Cash paid during the period for:
Income taxes (net of refunds)	$	25,534		$	33,037
Cash Flows From Discontinued Operations:
Net Cash Provided By (Used In) Operating Activities	$	604		$	(68,030	)
Net Cash Used In Investing Activities		—			(62,126	)
Net Cash Used In Financing Activities		—			(102,094	)
Effects of exchange rate changes on cash		(62	)		(1,752	)
Net increase (decrease) in cash and cash equivalents		542			(234,002	)
Cash and cash equivalents at beginning of period		1,426			470,972
Cash and cash equivalents at end of period—Discontinued Operations	$	1,968		$	236,970

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, 2009		236,919,404	$	236,919	$	1,300,998		$	951,647	$	(69,370	)	$	(612,997	)	$	1,807,197		$	25,903		$	1,833,100
Net income		—		—		—			135,975		—						135,975			13,750			149,725
Other comprehensive income, net of tax		—		—		—			—		—			14,556			14,556			(9	)		14,547
Exercise of stock options		323,619		324		669			—		(650	)		—			343			—			343
Excess tax benefits on stock options		—		—		2,127			—		—			—			2,127			—			2,127
Contributions to thrift plan		282,022		282		6,641			—		—			—			6,923			—			6,923
Share vesting		1,738,734		1,739		(1,739	)		—		—			—			—			—			—
Purchase of treasury shares		—		—		—			—		(13,264	)		—			(13,264	)		—			(13,264	)
Stock-based compensation charges, net of tax		—		—		35,091			—		—			—			35,091			—			35,091
Distributions to noncontrolling interests and other		—		—		—			—		—			—			—			7			7
Acquisition of noncontrolling interests		—		—		—			—		—			—			—			2,682			2,682
Balance June 30, 2010		239,263,779	$	239,264	$	1,343,787		$	1,087,622	$	(83,284	)	$	(598,441	)	$	1,988,948		$	42,333		$	2,031,281
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

See accompanying notes to condensed consolidated financial statements.

7

McDERMOTT INTERNATIONAL, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

JUNE 30, 2011

(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 and major oil and gas companies, and we operate in most major offshore oil and gas producing regions throughout the world. In these notes to our 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, 2010.

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 July 30, 2010, we completed the spin-off of our previously reported Government Operations and Power Generation Systems segments into an independent publicly traded company named The Babcock & Wilcox Company (“B&W”). Additionally, during the quarter ended September 30, 2010, we committed to a plan to sell our charter fleet business which operates 10 of the 14 vessels acquired in our 2007 acquisition of substantially all of the assets of Secunda International Limited. The condensed consolidated balance sheets reflect the charter fleet business as held for sale. The condensed consolidated statements of income and the condensed consolidated statements of cash flows reflect the historical operations of B&W for 2010 and the charter fleet business for all periods presented as discontinued operations. The 2010 condensed consolidated statement of equity and the condensed consolidated statements of comprehensive income for the three-month and six-month periods ended June 30, 2010 contain amounts attributable to the spun-off B&W operations. We have presented the notes to our condensed consolidated financial statements on the basis of continuing operations.

Business Segments

See Note 7 for summarized financial information on our segments. We have the following reporting segments:

• Asia Pacific

• Atlantic

• Middle East

• Corporate

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 revenues and related costs recorded, plus accumulated contract costs that exceed amounts invoiced to customers under the terms of the contracts, in contracts in progress. We include in advance billings on contracts, billings that exceed accumulated contract costs and revenues and costs recognized under the percentage-of-completion method. Most long-term contracts contain provisions for progress payments. We expect to invoice customers for all unbilled revenues. Certain costs are excluded from the cost-to-cost method of measuring progress, such as significant costs for materials and major third-party subcontractors, if it appears that such exclusion would result in a more meaningful measurement of actual contract progress and resulting periodic allocation of income. Total estimated costs, and resulting contract income, are affected by changes in the expected cost of materials and

8

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 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 profit 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 one active contract being accounted for under our deferred profit recognition policy.

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 did not enter into any significant contracts that we have accounted for under the completed contract method during the quarters ended June 30, 2011 and June 30, 2010.

Variations from estimated contract performance could result in material adjustments to operating results for any fiscal quarter or year. We include claims for extra work or changes in scope of work, to the extent of costs incurred, in contract revenues when we believe collection is probable. For all contracts, if a current estimate of total contract costs 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.

Impairment Review

We review goodwill for impairment on an annual basis or more frequently if circumstances indicate that an impairment may exist. The annual impairment review, which is performed as of December 31, involves comparing the fair value of each applicable operating segment with its net book value 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 estimated undiscounted future cash flows associated with an asset are compared to the carrying value of the asset to determine if impairment exists, in which case an impairment is recognized for the difference between the recorded and fair value of the asset.

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 some significant litigation and other proceedings, as discussed in Note 9. We have accrued our estimates of the probable losses associated with these matters. 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, 2011, we had restricted cash and cash equivalents of $158.9 million in the aggregate, of which $157.7 million was held in restricted foreign-entity accounts, $0.2 million was held to meet reinsurance reserve requirements of our captive insurance subsidiary and $1.0 million was classified as non-current and is included in other assets in the accompanying condensed consolidated balance sheet. As further discussed in Note 10, subsequent to the quarter ended June 30, 2011, we restructured certain consolidated subsidiaries, which account for approximately $147.0 million of our restricted cash balance at June 30, 2011,

9

resulting in the removal of the restrictions on the available funds. As a result, we expect to reclassify the $147.0 million to cash and cash equivalents in the quarter ending September 30, 2011.

Investments

At June 30, 2011, we had investments with a fair value of $238.6 million. For the six-month period ended June 30, 2011, we had $424.4 million and $377.0 million of sales and maturities and purchases, respectively. Our investment portfolio consists primarily of investments in government and agency obligations and commercial paper. 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 $3.7 million and $4.3 million at June 30, 2011 and December 31, 2010, respectively. The major components of our investments in an unrealized loss position are asset-backed and mortgage-backed obligations. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired at June 30, 2011.

Accounts Receivable – Trade, Net

A summary of contract receivables is as follows:

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	227,816		$	191,216
Completed contracts		121,787			85,587
Retainages		38,286			63,558
Unbilled		250			12,697
Less allowances		(30,897	)		(29,561	)
Accounts receivable—trade, net	$	357,242		$	323,497

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, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	38,286	$	63,558
Retainages expected to be collected after one year		95,305		83,143
Total retainages	$	133,591	$	146,701

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.

Comprehensive Loss

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

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,857	)	$	(6,888	)
Net loss on investments		(3,674	)		(4,330	)
Net gain (loss) on derivative financial instruments		8,867			(855	)
Unrecognized losses on benefit obligations		(131,705	)		(151,644	)
Accumulated other comprehensive loss	$	(129,369	)	$	(163,717	)

10

Recently Adopted Accounting Standards

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. We do not expect the adoption of this update to have a material impact on our condensed consolidated financial statements.

In January 2010, the FASB issued a revision to the topic Fair Value Measurements and Disclosures. This revision sets forth new rules on providing enhanced information for Level 3 measurements. We adopted the disclosure provisions required by this revision on January 1, 2011, for both interim and annual disclosures, which did not have a material impact on our condensed consolidated financial statements.

We do not expect other recently issued standards and updates to have a material impact on our condensed consolidated financial statements.

NOTE 2 – DISCONTINUED OPERATIONS

The following discussion provides information pertaining to our significant discontinued operations.

Charter Fleet Business

In conjunction with classifying the charter fleet business as a discontinued operation during the quarter ended September 30, 2010, we recognized a $27.7 million write-down of the carrying value of these assets to their estimated net realizable value, based on the estimated fair value of consideration expected from the sale and estimated selling costs.

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,
	2011		2010		2011		2010
	(Unaudited) (In thousands)
Revenues	$	11,062	$	17,921	$	20,566	$	32,582
Income before provision for income taxes		2,330		3,261		4,741		6,404
Provision for income taxes		720		415		1,469		1,519
Income from discontinued operations, net of tax	$	1,610	$	2,846	$	3,272	$	4,885

The following table presents the carrying values of the major classes of assets and liabilities held for sale that are included in our unaudited condensed consolidated balance sheets:

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Cash	$	1,968	$	1,426
Accounts receivable – net		8,357		5,253
Other assets		3,550		3,482
Total current assets held for sale		13,875		10,161
Property, plant and equipment – net		69,401		68,595
Other assets		8,709		8,555
Total long-term assets held for sale		78,110		77,150
Total assets held for sale	$	91,985	$	87,311
Accounts payable and accrued liabilities	$	8,372	$	8,748
Other liabilities		14,540		12,154
Total liabilities associated with assets held for sale	$	22,912	$	20,902

Spin-off of B&W

On July 30, 2010, we completed the spin-off of B&W to our stockholders through a stock distribution. B&W’s assets and businesses primarily consisted of those that we previously reported as our Government Operations and Power Generation Systems segments. In connection with the spin-off, our stockholders received 100% (approximately 116 million shares) of the outstanding common stock of B&W. The distribution of B&W common stock occurred by way of a pro rata stock dividend to our stockholders. Each stockholder generally received one share of B&W common stock for every two shares of our common stock held by such stockholder on July 9, 2010, and cash in lieu of any fractional shares. Prior to the completion of the spin-off, B&W made a cash distribution to us totaling $100 million.

In order to effect the distribution and govern MII’s relationship with B&W after the distribution, MII and B&W entered into a master separation agreement and several other agreements, including a tax sharing agreement and transition services agreements.

Financial Information

The following table presents selected financial information regarding the results of operations of our former B&W business for the three-month and six-month periods ended June 30, 2010. Loss on disposal of discontinued operations represents costs incurred in connection with the B&W spin-off.

	Three Months Ended June 30, 2010			Six Months Ended June 30, 2010
	(Unaudited) (In thousands)
Revenues	$	688,496		$	1,350,884
Loss on disposal of discontinued operations		(66,218	)		(90,420	)
Income before provision for income taxes		81,267			118,138
		15,049			27,718
Provision for income taxes		20,552			26,881
Income (loss) from discontinued operations, net of tax	$	(5,503	)	$	837

11

NOTE 3 – PENSION PLANS

We historically provided retirement benefits for certain U.S.-based employees through the McDermott (U.S.) Retirement Plan (the “McDermott Plan”) and other supplemental defined pension benefits. The McDermott Plan and the supplemental defined pension benefits are collectively referred to as the “Domestic Plan.” The J. Ray McDermott, S.A. Third Country National Employees Pension Plan (the “TCN Plan”) provides retirement benefits for certain of our foreign employees.

During the quarter ended June 30, 2011, we changed the investment strategy of the McDermott Plan to approximately 85% fixed income and approximately 15% equities, which caused us to remeasure the plan’s assets and benefit obligations. In connection with the investment strategy change, we increased the expected rate of return on plan assets assumption to 6.50%, as compared to 5.75% at December 31, 2010, which is consistent with the long-term asset returns expected from the portfolio after the investment strategy change. Additionally, the discount rate assumption increased to 5.40%, as compared to 5.30% at December 31, 2010.

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

	Domestic Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Service cost	$	—		$	180		$	—		$	348
Interest cost		7,155			10,142			14,230			19,643
Expected return on plan assets		(7,550	)		(10,205	)		(14,075	)		(19,765	)
Recognized net actuarial loss and other		4,482			5,500			8,730			10,653
Curtailments		(8	)		—			(8	)		—
Net periodic benefit cost	$	4,079		$	5,617		$	8,877		$	10,879
	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Service cost	$	686		$	576		$	1,371		$	1,152
Interest cost		595			546			1,190			1,092
Expected return on plan assets		(613	)		(457	)		(1,226	)		(914	)
Amortization of prior service cost		4			546			8			1,092
Recognized net actuarial loss		684			—			1,368			—
Net periodic benefit cost	$	1,356		$	1,211		$	2,711		$	2,422

NOTE 4 – 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 forward-exchange 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 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.

We enter into derivative financial instruments primarily as hedges of certain firm purchase and sale commitments 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 or (2) offset against the change in fair value of the hedged firm commitment through earnings. At the inception and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows 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 other income (expense)—net in our condensed consolidated statements of income. At June 30, 2011, we had designated the majority of our foreign currency forward-exchange contracts as cash flow hedging instruments.

13

At June 30, 2011, we had deferred approximately $8.9 million of net gains on these derivative financial instruments in AOCI, and we expect to reclassify the net gains on the derivative financial instruments in the periods that we reclassify the net losses on the forecasted transactions. We expect to reclassify approximately $3.7 million of the net deferred gains out of AOCI over the next 12 months.

At June 30, 2011, all of our derivative financial instruments consisted of foreign currency forward-exchange contracts. The notional value of our forward contracts totaled $383.3 million at June 30, 2011, with maturities extending to December 2013. These instruments consist of contracts to purchase or sell foreign-denominated currencies. The fair value of these contracts was in a net asset position totaling $1.5 million at June 30, 2011. 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, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Foreign Exchange Contracts:
Location
Accounts receivable–other	$	15,922	$	6,066
Other assets		2,014		3,225
Total asset derivatives	$	17,936	$	9,291
Accounts payable	$	8,684	$	2,207
Other liabilities		7,792		5,733
Total liability derivatives	$	16,476	$	7,940

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011			2010
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Foreign Exchange Contracts:
Amount of gain (loss) recognized in other comprehensive income (loss)	$	3,311	$	(7,318	)	$	11,378		$	(12,271	)
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	93	$	2,625		$	(42	)	$	2,887
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Other income (expense) – net	$	147	$	(1,717	)	$	(1,823	)	$	(4,066	)

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NOTE 5 – FAIR VALUE MEASUREMENTS

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

	6/30/11		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds(1)	$	2,081	$	—	$	2,081	$	—
Commercial paper		142,862		—		142,862		—
U.S. Government and agency securities(2)		84,242		78,494		5,748		—
Asset-backed securities and collateralized mortgage obligations(3)		9,435		—		2,363		7,072
Total	$	238,620	$	78,494	$	153,054	$	7,072

	12/31/10		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds	$	2,007	$	—	$	2,007	$	—
U.S. Government and agency securities		269,161		269,161		—		—
Asset-backed securities and collateralized mortgage obligations		9,869		—		2,497		7,372
Corporate notes and bonds		4,168		—		4,168		—
Total	$	285,205	$	269,161	$	8,672	$	7,372

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

⁽²⁾ Investments in U.S. Treasury securities with maturities of two years or less.

⁽³⁾ Asset-backed and mortgage-backed securities with maturities of up to 26 years.

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, 2011 and 2010:

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Balance at beginning of period	$	7,503		$	7,723		$	7,372		$	7,494
Total realized and unrealized gains (losses)		(39	)		397			465			1,277
Purchases, issuances and settlements		—			—			—			(111	)
Principal repayments		(392	)		(465	)		(765	)		(1,005	)
Balance at end of period	$	7,072		$	7,655		$	7,072		$	7,655

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

Other Financial Instruments

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

	June 30, 2011				December 31, 2010
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Debt	$	81,862	$	82,283	$	55,295	$	56,180
Forward contracts, net	$	1,460	$	1,460	$	1,352	$	1,352

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

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

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

Short-term and long-term debt. We base the fair values of debt instruments on quoted market prices. Where quoted prices are not available, we base the fair values 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 determined using observable financial market inputs, such as quoted market prices.

NOTE 6 – STOCK-BASED COMPENSATION

In connection with the spin-off of B&W, we made certain adjustments to our stock-based compensation awards. For holders of performance shares issued in or prior to May 2009, we cancelled the performance shares and issued restricted stock in an amount equal to the fair value of the shares held immediately prior to the spin-off. For holders of restricted stock granted in or prior to May 2010, the holder received additional units of restricted stock to maintain the total fair value of restricted stock held immediately prior to the spin-off. For stock options granted in or prior to May 2010, we adjusted the number of options held by each holder so that the intrinsic value of the stock options held immediately following the spin-off equaled the intrinsic value of the stock options held immediately prior to the spin-off.

Total stock-based compensation expense, net recognized for the three months and six months ended June 30, 2011 and 2010 is as follows:

	Three Months Ended June  30, 2011				Six Months Ended June 30, 2011
	2011		2010(1)		2011		2010(1)
	(Unaudited) (In thousands)
Stock Options	$	1,062	$	439	$	1,870	$	745
Restricted Stock and Restricted Stock Units		3,466		1,811		8,151		3,632
Performance Shares and Deferred Stock Units		381		859		503		1,842
Total	$	4,909	$	3,109	$	10,524	$	6,219

⁽¹⁾ Unrealized tax benefits for the three-month and six-month periods ended June 30, 2010 was $1.2 million and $2.6 million, respectively.

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NOTE 7 – SEGMENT REPORTING

We report our financial results under four reporting segments, consisting of Asia Pacific, Atlantic, Middle East and Corporate. Our Corporate segment primarily reflects corporate personnel and activities, incentive compensation programs and other costs. Costs incurred in our Corporate segment are generally fully allocated to our other segments. We account for intersegment sales at prices that we generally establish by reference to similar transactions with unaffiliated customers. 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,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Revenues:
Asia Pacific	$	547,833		$	224,078		$	1,022,646		$	444,944
Atlantic		52,552			48,328			92,446			102,594
Middle East		249,416			354,738			633,949			584,488
Total revenues	$	849,801		$	627,144		$	1,749,041		$	1,132,026
Segment revenues include the following intersegment transfers and eliminations:
Atlantic	$	217		$	5,234		$	297		$	9,042
Middle East		—			330			—			330
Eliminations		(217	)		(5,564	)		(297	)		(9,372	)
Total adjustments and eliminations	$	—		$	—		$	—		$	—
Operating income:
Asia Pacific	$	58,511		$	30,484		$	97,390		$	75,105
Atlantic		(16,607	)		(23,369	)		(34,244	)		(26,716	)
Middle East		41,875			91,027			120,931			122,940
Total operating income	$	83,779		$	98,142		$	184,077		$	171,329
Capital expenditures:
Asia Pacific	$	11,431		$	701		$	38,417		$	7,184
Atlantic		54,148			22,338			82,900			32,681
Middle East		5,781			22,016			13,492			51,593
Corporate		6,336			4,149			6,873			6,158
Total capital expenditures(1)	$	77,696		$	49,204		$	141,682		$	97,616
Depreciation and amortization:
Asia Pacific	$	6,616		$	3,698		$	12,352		$	9,083
Atlantic		3,448			4,658			7,241			9,747
Middle East		6,566			6,503			13,929			11,404
Corporate		2,944			4,177			6,577			7,589
Total depreciation and amortization	$	19,574		$	19,036		$	40,099		$	37,823

⁽¹⁾  Total capital expenditures excludes $6.9 million and $10.5 million in accrued capital expenditures for the six months ended June 30, 2011 and 2010, respectively.

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	838,350	$	564,403
Atlantic		362,076		265,607
Middle East		854,925		1,302,398
Corporate		559,961		378,969
Total continuing operations		2,615,312		2,511,377
Total discontinued operations		91,985		87,311
Total assets	$	2,707,297	$	2,598,688

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NOTE 8 – EARNINGS PER SHARE

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

	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011		2010
	(Unaudited)
	(In thousands, except share and per share amounts)
Basic:
Income from continuing operations less noncontrolling interests	$	63,718	$	78,691		$	132,476	$	130,253
Income (loss) from discontinued operations, net of tax		3,610		(2,657	)		5,272		5,722
Net income attributable to McDermott International, Inc.	$	67,328	$	76,034		$	137,748	$	135,975
Weighted average common shares		234,573,031		231,847,145			234,207,053		231,335,723
Income from continuing operations less noncontrolling interests		0.27		0.34			0.57		0.56
Income (loss) from discontinued operations, net of tax		0.02		(0.01	)		0.02		0.02
Net income attributable to McDermott International, Inc.		0.29		0.33			0.59		0.59
Diluted:
Income from continuing operations less noncontrolling interests	$	63,718	$	78,691		$	132,476	$	130,253
Income (loss) from discontinued operations, net of tax		3,610		(2,657	)		5,272		5,722
Net income attributable to McDermott International, Inc.	$	67,328	$	76,034		$	137,748	$	135,975
Weighted average common shares (basic)		234,573,031		231,847,145			234,207,053		231,335,723
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		2,971,643		2,576,401			2,938,073		3,252,568
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards		237,544,674		234,423,546			237,145,126		234,588,291
Income from continuing operations less noncontrolling interests		0.27		0.34			0.56		0.56
Income (loss) from discontinued operations, net of tax		0.02		(0.01	)		0.02		0.02
Net income attributable to McDermott International, Inc.		0.28		0.32			0.58		0.58

⁽¹⁾  Approximately 422,000 and 417,000 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, 2011.

18

NOTE 9 – COMMITMENTS AND CONTINGENCIES

Litigation

The following discussion updates Note 14 – Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2010, and Note 9 – Commitments and Contingencies in our Form 10-Q for the quarter ended March 31, 2011.

A lawsuit entitled Coto v. J. Ray McDermott, S.A., et al., was filed in Civil District Court for the Parish of Orleans, Louisiana in November 1995. The lawsuit arose out of the sinking of the DLB-269 off the coast of Mexico on October 15, 1995. At the time trial began in 2005, 13 plaintiffs had claims pending, primarily for post traumatic stress disorder allegedly suffered as a result of the incident. Settlement agreements have been executed with each of the 13 claimants, and accordingly the case is now concluded.

On April 9, 2009, two of our subsidiaries, McDermott Gulf Operating Company (“MGOC”) and J. Ray McDermott Canada, Ltd., through its registered business name, Secunda Marine Services (“Secunda”), filed a lawsuit in the Supreme Court of Nova Scotia against Oceanografia Sociedad Anonima de Capital Variable (“OSA”) and Con-Dive, LLC for damages, including unpaid charter hire for the charter of the vessel Bold Endurance. On April 13, 2009, as security for the unpaid charter hire, MGOC filed suit and obtained seizure orders for a saturation dive system aboard the Bold Endurance in the United States District Court for the Southern District of Alabama in a matter entitled McDermott Gulf Operating Company, et al. v. Con-Dive, LLC et al. The seizure was vacated on equitable grounds by court order dated May 29, 2009. MGOC and Secunda appealed the decision to the United States Court of Appeals for the Eleventh Circuit, which affirmed the order to vacate. On April 13, 2010, OSA filed a lawsuit entitled Oceanografia S.A. de C.V. v. McDermott Gulf Operating Company, Inc. and Secunda Marine Services, Inc. in the United States District Court for the Southern District of Alabama, alleging wrongful arrest, wrongful attachment and conversion of the saturation-diving system (the “Alabama Proceeding”). In its complaint, OSA claimed damages for loss of revenue in excess of $10 million and physical damage to the equipment and requested punitive damages, attorneys’ fees and costs. Recently, OSA has asserted damages are in excess of $25 million. Discovery is ongoing and a trial date has been set for February 2012 in the Alabama Proceeding. We have not accrued any amounts related to this litigation. Although there is a possibility of an adverse judgment in the Alabama Proceeding, the amount or potential range of loss is not estimable at this time. McDermott contests the validity of Plaintiff’s claims as well as its alleged damages, which to date, remain unsubstantiated. We intend to vigorously defend the claims in the Alabama Proceeding and to continue to pursue payment of the charter hire in the Supreme Court of Nova Scotia.

The following discussion presents the remaining pending litigation contained in Note 14 – Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2010 and Note 9 – Commitments and Contingencies in our Form 10-Q for the quarter ended March 31, 2011, for which there have been no material developments.

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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, 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, and an environmental claim involving Babcock & Wilcox Power Generation Group, Inc., a subsidiary of B&W (“B&W PGG”). 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 the Company has given notice that it 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.

In a proceeding entitled Antoine, et al. vs. J. Ray McDermott, Inc., et al., filed in the 24th Judicial District Court, Jefferson Parish, Louisiana, approximately 88 plaintiffs filed suit against approximately 215 defendants, including JRMI and Delta Hudson Engineering Corporation (“DHEC”), another affiliate of ours, generally alleging injuries for exposure to asbestos, and unspecified chemicals, metals and noise while the plaintiffs were allegedly employed as Jones Act seamen. On January 10, 2007, the District Court dismissed the plaintiffs’ claims, without prejudice to their right to refile their claims. On January 29, 2007, in a matter entitled Boudreaux, et al. v. McDermott, Inc., et al., originally filed in the United States District Court for the Southern District of Texas, 21 plaintiffs originally named in the Antoine matter filed suit against JRMI, MI and approximately 30 other employer defendants, alleging Jones Act seaman status and generally alleging exposure to welding fumes, solvents, dyes, industrial paints and noise. Boudreaux was transferred to the United States District Court for the Eastern District of Louisiana on May 2, 2007. The District Court 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, in a matter entitled Antoine, et al. v. McDermott, Inc., et al., filed in the 164th Judicial District Court for Harris County, Texas, 43 plaintiffs originally named in the Antoine matter filed suit against JRMI, MI 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 this matter other than service of process and answer/appearance dates until further order of the Court. The Antoine 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 cases and attorneys’ fees in the new Antoine case.

Additionally, due to the nature of our business, we are, from time to time, involved in routine litigation or subject to other 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, 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.

Environmental Matters

We have been identified as a potentially responsible party at various cleanup sites under the Comprehensive Environmental Response, Compensation, and Liability Act, as amended (“CERCLA”) and other state and foreign CERCLA-type environmental laws. Such 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, 2011 we had total environmental reserves of $0.9 million, of which $0.4 million 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.

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During the quarter ended June 30, 2011, we recovered $2.0 million of environmental reserves associated with the April 2006 sale of our former Mexican subsidiary, Talleres Navales del Golfo, S.A. de C.V. (“TNG”). TNG was reported as a discontinued operation in our consolidated financial statements for the year ended December 31, 2006, and accordingly, the recovery of this reserve is included in income from discontinued operations, net of tax for the three-month and six-month periods ended June 30, 2011.

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, 2011, it is possible that we may incur liabilities for liquidated damages aggregating approximately $42 million, of which approximately $5 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 July 2009 to August 2011. We believe we will be successful in obtaining schedule extensions or other customer-agreed changes that should resolve the potential for additional liquidated damages being incurred. However, we may not achieve relief on some or all of the issues. We do not believe any amounts for these potential liquidated damages in excess of the amounts recorded in our financial statements are probable of being paid by us.

Other

MII, B&W PGG and McDermott Holdings, Inc., which in connection with the spin-off of B&W was renamed Babcock & Wilcox Holdings, Inc. and merged with B&W, have jointly executed general agreements of indemnity in favor of various surety underwriters relating to surety bonds those underwriters issued in support of B&W PGG’s contracting activity. As of June 30, 2011, bonds issued under such arrangements totaled $82.3 million. Pursuant to the master separation agreement entered into between us and B&W in connection with the spin-off, B&W has agreed to indemnify us with respect to any losses we may incur in connection with these surety bonds.

NOTE 10 – SUBSEQUENT EVENT

Subsequent to June 30, 2011, we restructured certain consolidated subsidiaries for which we had classified approximately $147.0 million of restricted cash and cash equivalents as of June 30, 2011. As a result of the restructuring, we removed the restrictions on the available funds and expect to reclassify $147.0 million of restricted cash to cash and cash equivalents in the quarter ending September 30, 2011.

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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, 2010.

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 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. In addition, 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 execution;

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

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

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

These forward-looking statements speak only as of the date of this report; we disclaim any obligation to update these statements unless required by securities law, and we caution you not to rely on them unduly. We have based these forward-looking statements on our current expectations and assumptions about future events. While our management considers these expectations and assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory and other risks, contingencies and uncertainties, most of which are difficult to predict and many of which are beyond our control. These risks, contingencies and uncertainties relate to, among other matters, the following:

• general economic and business conditions and industry trends;

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

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

• the highly competitive nature of our industry;

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

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

• our ability to 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, which 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 with enterprise systems;

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

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

• 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 B&W 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, 2010. These factors are not necessarily all the factors that could affect us. Unpredictable or unanticipated factors we have not discussed in this report could also have material adverse effects on actual results of matters that are the subject of our forward-looking statements. We do not intend to update our description of important factors each time a potential important factor arises, except as required by applicable securities laws and regulations. We advise our security holders that they should (1) be aware that factors not referred to above could affect the accuracy of our forward-looking statements and (2) use caution and common sense when considering our forward-looking statements.

Recent Developments

Charter Fleet Business

During the quarter ended September 30, 2010, we committed to a plan to sell our charter fleet business, which has been classified as discontinued operations. In conjunction with classifying the charter fleet business as a discontinued operation during the quarter ended September 30, 2010, we recognized a $27.7 million write-down of the carrying value of these assets to their estimated net realizable value, based on the estimated fair value of consideration expected from the sale and estimated selling costs.

Spin-off of B&W

        On July 30, 2010, we completed the spin-off of B&W to our stockholders through a stock distribution. B&W’s assets and businesses primarily consisted of those that we previously reported as our Government Operations and Power Generation Systems segments. In connection with the spin-off, our stockholders received 100% (approximately 116 million shares) of the outstanding common stock of B&W. The distribution of B&W common stock occurred by way of a pro rata stock dividend to our stockholders. Each stockholder generally received one share of B&W common stock for every two shares of our common stock held by such stockholder on July 9, 2010, and cash in lieu of any fractional shares. Prior to the completion of the spin-off, B&W made a cash distribution to us totaling $100 million.

In order to effect the distribution and govern MII’s relationship with B&W after the distribution, MII and B&W entered into a master separation agreement and several other agreements, including a tax sharing agreement and transition services agreements.

Master Separation Agreement

The master separation agreement between us and B&W contains the key provisions relating to the separation of the B&W business from MII and the distribution of B&W shares of common stock. The master separation agreement identified the assets transferred to, liabilities assumed by and contracts assigned to B&W by MII or by B&W to MII in the spin-off and provided the mechanisms for these transfers, assumptions and assignments to occur. Under the master separation agreement we agreed to indemnify B&W against various claims and liabilities related to the past operation of MII’s business (other than B&W’s business) and B&W agreed to indemnify us against various claims and liabilities related to its business.

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Tax Sharing Agreement

A subsidiary of MII and a subsidiary of B&W entered into an agreement providing for the sharing of taxes incurred before and after the distribution, various indemnification rights with respect to tax matters and restrictions to preserve the tax-free status of the distribution to MII. Under the terms of the tax sharing agreement, B&W is generally responsible for any taxes imposed on MII or B&W in the event that certain transactions related to the spin-off fail to qualify for tax-free treatment. However, if these transactions fail to qualify for tax-free treatment because of actions or failures to act by MII or its subsidiaries, a subsidiary of MII would be responsible for all such taxes. B&W is also entitled to the historical tax benefits generated by MII’s U.S. operations, and these amounts are shown in income (loss) from discontinued operations, net of tax in our unaudited condensed consolidated statements of income for the three-month and six-month periods ended June 30, 2010.

Transition Services Agreements

Under the transition services agreements, MII and B&W are providing each other certain transition services on an interim basis. Such services currently being provided include human resources, legal, information technology and tax services. In consideration for such services, MII and B&W each pay fees to the other for the services provided, and those fees are generally in amounts intended to allow the party providing the services to recover its direct and indirect costs incurred in providing those services. The transition services agreements contain customary mutual indemnification provisions.

Our results of operations for the periods presented in this report reflect the operations of B&W and the charter fleet business as discontinued operations. The discussion in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations” is presented on the basis of continuing operations.

Accounting for Contracts

We execute our contracts through a variety of methods, primarily fixed-price, and also including cost reimbursable, cost-plus, day-rate and unit-rate basis or some combination of those methods. 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.

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 periodically 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.

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.

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Critical Accounting Policies and Estimates

For a discussion of critical accounting policies and estimates we use in the preparation of our condensed 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, 2010. 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

We report our financial results under four reporting segments, consisting of Asia Pacific, Atlantic, Middle East and Corporate. Our Corporate segment primarily reflects corporate personnel and activities, incentive compensation programs and other costs. Costs incurred in our Corporate segment are generally fully allocated to our other segments. The following is a discussion of our Asia Pacific, Atlantic and Middle East segments.

Asia Pacific Segment

Through our Asia Pacific segment, we serve the needs of national and major 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 EPCI basis. Engineering and procurement services are provided by our Singapore office and are supported by additional resources located in 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 are developing a fabrication facility located in China.

Atlantic Segment

Through our Atlantic segment, we serve the needs of national and major oil and gas companies, primarily in the United States, Mexico, Canada, Trinidad, Brazil, West Africa and the North Sea. Project focus in this segment includes the fabrication and installation of fixed and floating structures and the installation of pipelines and subsea systems. Engineering and procurement services are provided by our Houston office, and our New Orleans office provides specialized marine engineering capabilities to support our global marine activities. The primary fabrication facilities for this segment are located in Morgan City, Louisiana and Altamira, Mexico.

Middle East Segment

Through our Middle East segment, which includes the Caspian region, we serve the needs of national and major oil and gas companies primarily in Saudi Arabia, Qatar, the United Arab Emirates (U.A.E.), Kuwait, India, Azerbaijan, Russia and Turkmenistan. Project focus in this segment relates primarily to the fabrication and installation of bottom-founded production platforms and the installation of related subsea pipelines in shallow water. 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. and Chennai, India offices and are supported by additional resources from our Houston 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.

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Results of Operations

Selected Financial Data:

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(In thousands)
Revenues:
Asia Pacific	$	547,833		$	224,078		$	1,022,646		$	444,944
Atlantic		52,552			48,328			92,446			102,594
Middle East		249,416			354,738			633,949			584,488
Total revenues	$	849,801		$	627,144		$	1,749,041		$	1,132,026
Operating income (loss):
Asia Pacific	$	58,511		$	30,484		$	97,390		$	75,105
Atlantic		(16,607	)		(23,369	)		(34,244	)		(26,716	)
Middle East		41,875			91,027			120,931			122,940
Total operating income	$	83,779		$	98,142		$	184,077		$	171,329
Other income (expense):
Interest income	$	292		$	335		$	741		$	825
Interest expense		(263	)		(2,117	)		(263	)		(2,279	)
Other income (expense) – net		1,255			722			(4,148	)		(728	)
Total other income (expense)	$	1,284		$	(1,060	)	$	(3,670	)	$	(2,182	)
Provision for Income Taxes	$	17,237		$	12,905		$	39,816		$	25,144
Total income (loss) from discontinued operations, net of tax	$	3,610		$	(2,657	)	$	5,272		$	5,722
Net Income Attributable to Noncontrolling Interests	$	4,108		$	5,486		$	8,115		$	13,750

Three months ended June 30, 2011 vs. 2010

Revenues

Revenues increased approximately 36%, or $222.7 million, to $849.8 million in the three months ended June 30, 2011 compared to $627.1 million for the corresponding 2010 period. The revenue growth was primarily attributable to the Asia Pacific segment, which increased $323.7 million to $547.8 million in the three months ended June 30, 2011, compared to $224.1 million in the three months ended June 30, 2010, influenced by the expanded scope on one of our EPCI projects as well as increased marine activity on other projects. Revenues in our Atlantic segment also increased approximately nine percent, or $4.2 million, to $52.5 million, influenced by increased fabrication activities in the three-month period ended June 30, 2011. Revenue improvements were partially offset by a decline in our Middle East segment where revenues decreased approximately 30%, or $105.3 million, to $249.4 million, driven largely by reduced marine activity on certain projects in Saudi Arabia. The marine activity on these projects was ongoing during the 2010 quarter, resulting in higher revenues, but was complete prior to the 2011 quarter.

Operating Income

Operating income decreased $14.3 million from $98.1 million in the quarter ended June 30, 2010 to $83.8 million in the quarter ended June 30, 2011, driven principally by the Middle East segment. Operating income in the Middle East segment declined $49.1 million to $41.9 million in the three months ended June 30, 2011, influenced by reduced marine activity and the substantial completion of several higher margin projects in Saudi Arabia for which the marine activities were ongoing during the 2010 quarter but were complete prior to the 2011 quarter.

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The operating income decline reported in the Middle East segment was moderated by our Asia Pacific segment, which reported an increase in operating income of approximately $28 million to $58.5 million in the three months ended June 30, 2011, influenced by expanded scope on one of our EPCI projects as well as increased marine activity on other projects. The Atlantic segment reported an operating loss of $16.6 million for the quarter ended June 30, 2011, an improvement of $6.8 million compared to the 2010 period, in part, due to the direct impact of certain cost reduction efforts, which have been undertaken.

Other Items in Operating Income

Selling, general and administrative expenses increased $7.7 million to $60.4 million in the three months ended June 30, 2011 as compared to $52.7 million in the three months ended June 30, 2010. The increase was primarily due to increased bidding and proposal-related costs and, to a lesser extent, severance expense associated with cost reduction efforts related to the Atlantic segment operations during the quarter ended June 30, 2011.

Equity in income (loss) of unconsolidated affiliates changed $1.2 million to a loss of $1.9 million in the quarter ended June 30, 2011 as compared to a $0.7 million loss in the quarter ended June 30, 2010, primarily attributable to increased equity losses from our FloaTEC and Qingdao joint ventures.

Other Items

Interest income was $0.3 million for the three months ended June 30, 2011 and June 30, 2010.

Interest expense decreased $1.8 million to $0.3 million in the three months ended June 30, 2011, primarily as a result of the write-off in the 2010 period of unamortized debt issuance costs associated with the replacement of our previous credit facility, partially offset by decreased capitalized interest.

Other income (expense) – net increased by $0.5 million to income of $1.2 million in the three months ended June 30, 2011, driven principally by gains recognized on our derivative financial instruments during the quarter ended June 30, 2011 as compared to losses incurred in the prior-year quarter.

Provision for Income Taxes

For the three months ended June 30, 2011, the provision for income taxes increased $4.3 million to $17.2 million, while income before provision for income taxes decreased $12.0 million to $85.1 million. The income tax increase was primarily attributable to a change in mix of earnings across jurisdictions. For the quarter ended June 30, 2011, more than two-thirds of our income before provision for income taxes was taxed at average rates of approximately 23%, resulting in an effective tax rate for the three months ended June 30, 2011 of approximately 20%, as compared to 13% for the prior-year period.

Discontinued Operations and Noncontrolling Interests

Total income (loss) from discontinued operations, net of tax was income of $3.6 million for the three months ended June 30, 2011 and a loss of $2.7 million for the three months ended June 30, 2010. Included in the three months ended June 30, 2011 amounts are a $2.0 million gain associated with the recovery of an environmental reserve from our TNG sale which was completed in 2006 and the results of our charter fleet operations. Included in the quarter ended June 30, 2010 amounts are $66.2 million of costs related to the spin-off of B&W and the results of the B&W business.

Net income attributable to noncontrolling interests decreased by $1.4 million to $4.1 million in the three months ended June 30, 2011, primarily due to reduced activity and lower net income at our joint ventures.

Six months ended June 30, 2011 vs. 2010

Revenues

Revenues increased approximately 55%, or $617.0 million, to $1,749.0 million in the six months ended June 30, 2011 compared to $1,132.0 million for the corresponding 2010 period. The revenue growth was attributable to the Asia Pacific and Middle East segments. Revenues in our Asia Pacific segment increased $577.7 million to $1,022.6 million in the six months ended June 30, 2011 compared to $444.9 million in the six months ended June 30, 2010, influenced by the expanded scope on one of our EPCI projects as well as increased marine activity on other projects. In addition, revenues in the Middle East segment improved by $49.5 million to $633.9 million in the six months ended June 30, 2011 as compared to the prior-year period, influenced by the initiation of marine installation programs on several projects in Saudi Arabia and India, and, to a lesser extent, an overall increase in engineering activities. The revenue improvements in our Asia Pacific and Middle East segments were partially offset by a $10.1 million revenue decline in our Atlantic segment for the six months ended June 30, 2011, largely as a result of reduced marine asset utilization, driven principally by lower marine activity levels in the U.S. Gulf of Mexico, partially offset by increased fabrication activities.

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Operating Income

Operating income increased $12.8 million from $171.3 million in the six months ended June 30, 2010 to $184.1 million in the six months ended June 30, 2011, attributable to our Asia Pacific segment, which benefited from the expanded scope on one of our EPCI projects as well as increased marine activity on other projects. Conversely, we experienced increased operating losses in the Atlantic segment and a decline in operating income in the Middle East segment. The decline in our Atlantic segment was caused primarily by lower marine asset utilization. The operating income decline in the Middle East segment was primarily attributable to the recognition of less income from change orders, close-outs and settlements in the first half of 2011 as compared to the 2010 period. Operating income is frequently influenced by the finalization of change orders, project close-outs and settlements, which 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.

During the quarter ended September 30, 2010, our Atlantic segment began accounting for one project 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. This project, which was awarded to one of our joint ventures, is in the early stages of activity. The Atlantic segment backlog includes a subcontract from our joint venture of approximately $151 million relating to this project, and revenues on this project totaled $10.5 million and $18.4 million for the three-months and six-months ended June 30, 2011.

Other Items in Operating Income

Selling, general and administrative expenses increased $12.0 million to $115.8 million in the six months ended June 30, 2011 as compared to $103.8 million in the six months ended June 30, 2010. The increase was primarily due to increased expenses related to bidding and proposal-related costs during the first half of 2011 as compared to the prior-year period.

Equity in income (loss) of unconsolidated affiliates increased $5.7 million to $1.6 million of income in the six months ended June 30, 2011 as compared to a $4.1 million loss in the six months ended June 30, 2010, primarily attributable to fee income recognized at one of our joint ventures during the first half of 2011. Our six months ended June 30, 2010 results also included an asset impairment at our FloaTEC joint venture.

Other Items

Interest income was $0.7 million and $0.8 million for the six months ended June 30, 2011 and June 30, 2010, respectively.

Interest expense decreased $2.0 million to $0.3 million in the six months ended June 30, 2011, primarily as a result of the write-off in the 2010 period of unamortized debt issuance costs associated with the replacement of our previous credit facility, partially offset by decreased capitalized interest.

Other expense – net increased by $3.4 million to expense of $4.1 million in the six months ended June 30, 2011, primarily due to foreign currency exchange losses in the 2011 period, partially offset by reduced losses recognized on our derivative financial instruments.

Provision for Income Taxes

For the six months ended June 30, 2011, the provision for income taxes increased $14.7 million to $39.8 million, while income before provision for income taxes increased $11.3 million to $180.4 million. Our effective tax rate for the first half of 2011 was approximately 22%, as compared to 15% for the first half of 2010. The rate increase was primarily attributable to a change in the mix of earnings across jurisdictions, resulting in a larger proportion of our income being taxed at higher tax rates.

Discontinued Operations and Noncontrolling Interests

Total income (loss) from discontinued operations, net of tax was $5.3 million and $5.7 million for the six months ended June 30, 2011 and 2010, respectively. Included in the six months ended June 30, 2011 amounts are a $2.0 million gain associated with the recovery of an environmental reserve from our TNG sale and the results of our charter fleet operations. Included in the six months ended June 30, 2010 amounts are $90.4 million of costs related to the spin-off of B&W and the results of the B&W business.

Net income attributable to noncontrolling interests decreased by $5.6 million to $8.1 million in the six months ended June 30, 2011, primarily due to reduced activity and lower net income at our joint ventures during the current year period, including a project-specific profit sharing arrangement on an installation project in the comparable prior year period.

28

Backlog

Backlog is not a measure recognized by generally accepted accounting principles. It is possible that our methodology for determining backlog may not be comparable to methods used by other companies. We generally include expected revenue in our backlog when we receive written confirmation from our customers. 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, 2011				December 31, 2010
	(Dollars in millions)
Asia Pacific	$	1,965	42	%	$	2,176	43	%
Atlantic		728	15	%		315	6	%
Middle East		2,023	43	%		2,548	51	%
Total Backlog	$	4,716	100	%	$	5,039	100	%

Of the June 30, 2011 backlog, we expect to recognize revenues as follows:

	2011		2012		Thereafter
	(In millions)
Total Backlog	$	1,836	$	2,355	$	525

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 (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, 2011, 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 the aggregate, our cash and cash equivalents, restricted cash and investments decreased by $187.1 million to $699.4 million at June 30, 2011 from $886.5 million at December 31, 2010, primarily due to the change in the net amount of contracts in progress and advanced billings, purchases of property, plant and equipment and cash used in operations, which include payments associated with certain employee benefits.

At June 30, 2011, we had investments with a fair value of $238.6 million. Our investment portfolio consists primarily of investments in government and agency obligations and commercial paper. 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 $3.7 million and $4.3 million at June 30, 2011 and December 31, 2010, 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 restricted cash increased by $254.0 million to $73.3 million at June 30, 2011 from a negative $180.7 million at December 31, 2010, primarily due to an increase in the net amount of contracts in progress and advanced billings.

Operating activities. Our net cash used in operations was $71.7 million in the six-month period ended June 30, 2011, compared to cash provided by operations of $139.6 million in the six-month period ended June 30, 2010. This change was primarily attributable to changes in our net contracts in progress and advance billings, partially offset by favorable changes in accounts payable.

Investing activities. Our net cash used in investing activities decreased by $56.5 million to $54.0 million in the six months ended June 30, 2011 from $110.5 million in the six months ended June 30, 2010. This decrease was primarily attributable to a reduction in our restricted cash balance.

29

Financing activities. Our net cash provided by financing activities decreased $59.0 million to $24.1 million in the six months ended June 30, 2011 as compared to $83.1 million in the six months ended June 30, 2010, primarily attributable to the receipt of a $100 million dividend from B&W in the 2010 period.

Credit Agreement

The Credit Agreement provides for revolving credit borrowings and issuances of letters of credit in an aggregate outstanding amount of up to $900.0 million, and is scheduled to mature on May 3, 2014. 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, subject to an aggregate maximum of $1.2 billion for all revolving loan and letter of credit commitments under the Credit Agreement.

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 2.50% to 3.50% 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 1.50% to 2.50% 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 0.375% and 0.625% per year depending on the credit ratings of the Credit Agreement. Additionally, we are charged a letter of credit fee of between 2.50% and 3.50% 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 1.25% and 1.75% 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, 2011, there were no borrowings outstanding, and letters of credit issued under the Credit Agreement totaled $250.1 million. At June 30, 2011, there was $649.9 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, 2011. Had there been borrowings, the applicable base interest rate would have been approximately 5.25% per annum. In addition, MII and its subsidiaries had $274.2 million in outstanding unsecured letters of credit at June 30, 2011.

Based on the credit ratings at June 30, 2011 applicable to the Credit Agreement, the applicable margin for Eurodollar-rate loans was 3.00%, the applicable margin for base-rate loans was 2.00%, the letter of credit fee for financial letters of credit was 3.00%, the letter of credit fee for performance letters of credit was 1.50%, and the commitment fee for unused portions of the Credit Agreement was 0.50%. 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 $47.7 million onto our balance sheet at June 30, 2011, of which approximately $7.4 million is classified as current notes payable. JRMSA has guaranteed approximately 50% of this debt based on its ownership percentages in the vessel-owning companies.

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 the earlier of six months after the delivery date of the vessel and October 1, 2012. Borrowings under the agreement are secured by, among other things, a pledge of all of the equity of North Ocean 105 AS, a mortgage on the North Ocean 105, and a lien on substantially all of the other assets of North Ocean 105 AS. MII unconditionally guaranteed all amounts to be borrowed under the agreement. At June 30, 2011 and December 31, 2010, there were $34.2 million and $3.4 million, respectively, in borrowings outstanding under this agreement.

30

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, 2010.

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, 2011 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, 2011 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 1A. Risk Factors

There have been no material changes from the risk factors as previously disclosed in “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2010, as updated by the risk factors in “Item 1A. Risk Factors” in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2011.

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, 2011, all of which involved repurchases of restricted shares of MII common stock pursuant to the provisions of employee benefit plans that permit the repurchase of restricted shares to satisfy statutory tax withholding obligations associated with the lapse of restrictions applicable to those shares:

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, 2011		—	$	—		not applicable		not applicable
May 1 – May 31, 2011		29,006		20.39		not applicable		not applicable
June 1 – June 30, 2011		801		18.27		not applicable		not applicable
Total		29,807	$	19.97		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)).
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 3, 2011

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)).
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

34

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, 2011;

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 3, 2011

/s/ Stephen M. Johnson

Stephen M. Johnson

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, 2011;

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 3, 2011

/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, 2011 (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 3, 2011

/s/ Stephen M. Johnson

Stephen M. Johnson

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, 2011 (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 3, 2011

/s/ Perry L. Elders

Perry L. Elders

Senior Vice President and Chief Financial Officer

XML



Computation of Basic and Diluted Earnings Per Share (Parenthetical) (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011
Earnings Per Share Disclosure [Line Items]
Antidilutive securities excluded from earnings per share computation, shares	422,000	417,000

XML



CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Jun. 30, 2011	Jun. 30, 2010
Net income	$ 71,436	$ 81,520		$ 145,863	$ 149,725
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs	5,093	14,755	[1]	10,056	29,493	[1]
Unrealized gain on benefit plan revaluation	9,883			9,883
Unrealized gain (loss) on investments	(63)	150		636	1,065
Realized loss on investments	12	24		20	162
Translation adjustments	1,268	(11,154)		4,031	(7,655)
Unrealized gain (loss) on derivatives	3,311	(9,311)		11,378	(13,317)
Realized loss on derivatives	77	3,928		(146)	4,799
Other comprehensive income (loss), net of tax	19,581	(1,608)		35,858	14,547
Total Comprehensive Income	91,017	79,912		181,721	164,272
Less: Comprehensive Income Attributable to Noncontrolling Interests	4,499	5,461		9,625	13,741
Comprehensive Income Attributable to McDermott International, Inc.	$ 86,518	$ 74,451		$ 172,096	$ 150,531

[1] Amortization of benefit plan costs for the three-month and six-month periods ended June 30, 2010 is shown net of tax of $8.1 million and $16.2 million, respectively.

XML



CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2010	Jun. 30, 2010
Amortization of benefit plan costs, tax	$ 8.1	$ 16.2

XML



DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Derivative Financial Instruments

The following tables summarize our derivative financial instruments:

Asset and Liability Derivatives

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Foreign Exchange Contracts:
Location
Accounts receivable–other	$	15,922	$	6,066
Other assets		2,014		3,225
Total asset derivatives	$	17,936	$	9,291
Accounts payable	$	8,684	$	2,207
Other liabilities		7,792		5,733
Total liability derivatives	$	16,476	$	7,940

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,
	2011		2010			2011			2010
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Foreign Exchange Contracts:
Amount of gain (loss) recognized in other comprehensive income (loss)	$	3,311	$	(7,318	)	$	11,378		$	(12,271	)
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	93	$	2,625		$	(42	)	$	2,887
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Other income (expense) – net	$	147	$	(1,717	)	$	(1,823	)	$	(4,066	)

XML



Document and Entity Information	6 Months Ended
	Jun. 30, 2011	Jul. 25, 2011
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2011
Document Fiscal Year Focus	2011
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		234,714,743

XML



Summarized Financial Information (Parenthetical) (Detail) (USD $) In Millions	Jun. 30, 2011	Jun. 30, 2010
Segment Reporting Information [Line Items]
Accrued capital expenditures	$ 6.9	$ 10.5

XML



SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2011

Summarized Financial Information

Summarized financial information is shown in the following tables:

	Three Months Ended June  30,						Six Months Ended June  30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Revenues:
Asia Pacific	$	547,833		$	224,078		$	1,022,646		$	444,944
Atlantic		52,552			48,328			92,446			102,594
Middle East		249,416			354,738			633,949			584,488
Total revenues	$	849,801		$	627,144		$	1,749,041		$	1,132,026
Segment revenues include the following intersegment transfers and eliminations:
Atlantic	$	217		$	5,234		$	297		$	9,042
Middle East		—			330			—			330
Eliminations		(217	)		(5,564	)		(297	)		(9,372	)
Total adjustments and eliminations	$	—		$	—		$	—		$	—
Operating income:
Asia Pacific	$	58,511		$	30,484		$	97,390		$	75,105
Atlantic		(16,607	)		(23,369	)		(34,244	)		(26,716	)
Middle East		41,875			91,027			120,931			122,940
Total operating income	$	83,779		$	98,142		$	184,077		$	171,329
Capital expenditures:
Asia Pacific	$	11,431		$	701		$	38,417		$	7,184
Atlantic		54,148			22,338			82,900			32,681
Middle East		5,781			22,016			13,492			51,593
Corporate		6,336			4,149			6,873			6,158
Total capital expenditures(1)	$	77,696		$	49,204		$	141,682		$	97,616
Depreciation and amortization:
Asia Pacific	$	6,616		$	3,698		$	12,352		$	9,083
Atlantic		3,448			4,658			7,241			9,747
Middle East		6,566			6,503			13,929			11,404
Corporate		2,944			4,177			6,577			7,589
Total depreciation and amortization	$	19,574		$	19,036		$	40,099		$	37,823

⁽¹⁾  Total capital expenditures excludes $6.9 million and $10.5 million in accrued capital expenditures for the six months ended June 30, 2011 and 2010, respectively.

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	838,350	$	564,403
Atlantic		362,076		265,607
Middle East		854,925		1,302,398
Corporate		559,961		378,969
Total continuing operations		2,615,312		2,511,377
Total discontinued operations		91,985		87,311
Total assets	$	2,707,297	$	2,598,688

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Summarized Financial Information (Detail) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenues	$ 849,801		$ 627,144		$ 1,749,041		$ 1,132,026
Eliminations	(217)		(5,564)		(297)		(9,372)
Total adjustments and eliminations
Operating income	83,779		98,142		184,077		171,329
Capital Expenditures	77,696	[1]	49,204	[1]	141,682	[1]	97,616	[1]
Depreciation and amortization	19,574		19,036		40,099		37,823
Assets, continuing operations	2,615,312				2,615,312				2,511,377
Total assets held for sale	91,985				91,985				87,311
Total Assets	2,707,297				2,707,297				2,598,688
Asia Pacific
Segment Reporting Information [Line Items]
Revenues	547,833		224,078		1,022,646		444,944
Operating income	58,511		30,484		97,390		75,105
Capital Expenditures	11,431		701		38,417		7,184
Depreciation and amortization	6,616		3,698		12,352		9,083
Assets, continuing operations	838,350				838,350				564,403
Atlantic
Segment Reporting Information [Line Items]
Revenues	52,552		48,328		92,446		102,594
Intersegment transfers and eliminations	217		5,234		297		9,042
Operating income	(16,607)		(23,369)		(34,244)		(26,716)
Capital Expenditures	54,148		22,338		82,900		32,681
Depreciation and amortization	3,448		4,658		7,241		9,747
Assets, continuing operations	362,076				362,076				265,607
Middle East
Segment Reporting Information [Line Items]
Revenues	249,416		354,738		633,949		584,488
Intersegment transfers and eliminations			330				330
Operating income	41,875		91,027		120,931		122,940
Capital Expenditures	5,781		22,016		13,492		51,593
Depreciation and amortization	6,566		6,503		13,929		11,404
Assets, continuing operations	854,925				854,925				1,302,398
Corporate
Segment Reporting Information [Line Items]
Capital Expenditures	6,336		4,149		6,873		6,158
Depreciation and amortization	2,944		4,177		6,577		7,589
Assets, continuing operations	$ 559,961				$ 559,961				$ 378,969

[1] Total capital expenditures excludes $6.9 million and $10.5 million in accrued capital expenditures for the six months ended June 30, 2011 and 2010, respectively.

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DERIVATIVE FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2011

DERIVATIVE FINANCIAL INSTRUMENTS

NOTE 4 – 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 forward-exchange 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 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.

We enter into derivative financial instruments primarily as hedges of certain firm purchase and sale commitments 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 or (2) offset against the change in fair value of the hedged firm commitment through earnings. At the inception and on an ongoing basis, we assess the hedging relationship to determine its effectiveness in offsetting changes in cash flows 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 other income (expense)—net in our condensed consolidated statements of income. At June 30, 2011, we had designated the majority of our foreign currency forward-exchange contracts as cash flow hedging instruments.

At June 30, 2011, we had deferred approximately $8.9 million of net gains on these derivative financial instruments in AOCI, and we expect to reclassify the net gains on the derivative financial instruments in the periods that we reclassify the net losses on the forecasted transactions. We expect to reclassify approximately $3.7 million of the net deferred gains out of AOCI over the next 12 months.

At June 30, 2011, all of our derivative financial instruments consisted of foreign currency forward-exchange contracts. The notional value of our forward contracts totaled $383.3 million at June 30, 2011, with maturities extending to December 2013. These instruments consist of contracts to purchase or sell foreign-denominated currencies. The fair value of these contracts was in a net asset position totaling $1.5 million at June 30, 2011. 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, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Derivatives Designated as Hedges:
Foreign Exchange Contracts:
Location
Accounts receivable–other	$	15,922	$	6,066
Other assets		2,014		3,225
Total asset derivatives	$	17,936	$	9,291
Accounts payable	$	8,684	$	2,207
Other liabilities		7,792		5,733
Total liability derivatives	$	16,476	$	7,940

The Effects of Derivative Instruments on our Financial Statements

	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011			2010
	(Unaudited) (In thousands)
Derivatives Designated as Hedges:
Foreign Exchange Contracts:
Amount of gain (loss) recognized in other comprehensive income (loss)	$	3,311	$	(7,318	)	$	11,378		$	(12,271	)
Income (loss) reclassified from AOCI into income: effective portion
Location
Cost of operations	$	93	$	2,625		$	(42	)	$	2,887
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing
Location
Other income (expense) – net	$	147	$	(1,717	)	$	(1,823	)	$	(4,066	)

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2011

Computation of Basic and Diluted Earnings Per Share

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

	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011		2010
	(Unaudited)
	(In thousands, except share and per share amounts)
Basic:
Income from continuing operations less noncontrolling interests	$	63,718	$	78,691		$	132,476	$	130,253
Income (loss) from discontinued operations, net of tax		3,610		(2,657	)		5,272		5,722
Net income attributable to McDermott International, Inc.	$	67,328	$	76,034		$	137,748	$	135,975
Weighted average common shares		234,573,031		231,847,145			234,207,053		231,335,723
Income from continuing operations less noncontrolling interests		0.27		0.34			0.57		0.56
Income (loss) from discontinued operations, net of tax		0.02		(0.01	)		0.02		0.02
Net income attributable to McDermott International, Inc.		0.29		0.33			0.59		0.59
Diluted:
Income from continuing operations less noncontrolling interests	$	63,718	$	78,691		$	132,476	$	130,253
Income (loss) from discontinued operations, net of tax		3,610		(2,657	)		5,272		5,722
Net income attributable to McDermott International, Inc.	$	67,328	$	76,034		$	137,748	$	135,975
Weighted average common shares (basic)		234,573,031		231,847,145			234,207,053		231,335,723
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		2,971,643		2,576,401			2,938,073		3,252,568
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards		237,544,674		234,423,546			237,145,126		234,588,291
Income from continuing operations less noncontrolling interests		0.27		0.34			0.56		0.56
Income (loss) from discontinued operations, net of tax		0.02		(0.01	)		0.02		0.02
Net income attributable to McDermott International, Inc.		0.28		0.32			0.58		0.58

⁽¹⁾  Approximately 422,000 and 417,000 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, 2011.

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Changes in Level 3 Instrument Measured on a Recurring Basis (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 7,503	$ 7,723	$ 7,372	$ 7,494
Total realized and unrealized gains (losses)	(39)	397	465	1,277
Purchases, issuances and settlements				(111)
Principal repayments	(392)	(465)	(765)	(1,005)
Balance at end of period	$ 7,072	$ 7,655	$ 7,072	$ 7,655

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DERIVATIVE FINANCIAL INSTRUMENTS - Additional Information (Detail) (Cash Flow Hedging, USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Deferred net gains on derivative financial instruments included in accumulated other comprehensive (income) loss	$ 8.9
Deferred net gains to be reclassified over the next 12 months	3.7
Foreign Exchange Contract
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Notional value of foreign currency forward-exchange contracts	383.3
Notional value of foreign currency forward-exchange contracts, maturity date	Dec. 31, 2013
Foreign currency contracts, fair value	$ 1.5

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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2011

Total Stock-Based Compensation Expense

Total stock-based compensation expense, net recognized for the three months and six months ended June 30, 2011 and 2010 is as follows:

	Three Months Ended June  30, 2011				Six Months Ended June 30, 2011
	2011		2010(1)		2011		2010(1)
	(Unaudited) (In thousands)
Stock Options	$	1,062	$	439	$	1,870	$	745
Restricted Stock and Restricted Stock Units		3,466		1,811		8,151		3,632
Performance Shares and Deferred Stock Units		381		859		503		1,842
Total	$	4,909	$	3,109	$	10,524	$	6,219

⁽¹⁾ Unrealized tax benefits for the three-month and six-month periods ended June 30, 2010 was $1.2 million and $2.6 million, respectively.

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2011

COMMITMENTS AND CONTINGENCIES

NOTE 9 – COMMITMENTS AND CONTINGENCIES

Litigation

The following discussion updates Note 14 – Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2010, and Note 9 – Commitments and Contingencies in our Form 10-Q for the quarter ended March 31, 2011.

A lawsuit entitled Coto v. J. Ray McDermott, S.A., et al., was filed in Civil District Court for the Parish of Orleans, Louisiana in November 1995. The lawsuit arose out of the sinking of the DLB-269 off the coast of Mexico on October 15, 1995. At the time trial began in 2005, 13 plaintiffs had claims pending, primarily for post traumatic stress disorder allegedly suffered as a result of the incident. Settlement agreements have been executed with each of the 13 claimants, and accordingly the case is now concluded.

On April 9, 2009, two of our subsidiaries, McDermott Gulf Operating Company (“MGOC”) and J. Ray McDermott Canada, Ltd., through its registered business name, Secunda Marine Services (“Secunda”), filed a lawsuit in the Supreme Court of Nova Scotia against Oceanografia Sociedad Anonima de Capital Variable (“OSA”) and Con-Dive, LLC for damages, including unpaid charter hire for the charter of the vessel Bold Endurance. On April 13, 2009, as security for the unpaid charter hire, MGOC filed suit and obtained seizure orders for a saturation dive system aboard the Bold Endurance in the United States District Court for the Southern District of Alabama in a matter entitled McDermott Gulf Operating Company, et al. v. Con-Dive, LLC et al. The seizure was vacated on equitable grounds by court order dated May 29, 2009. MGOC and Secunda appealed the decision to the United States Court of Appeals for the Eleventh Circuit, which affirmed the order to vacate. On April 13, 2010, OSA filed a lawsuit entitled Oceanografia S.A. de C.V. v. McDermott Gulf Operating Company, Inc. and Secunda Marine Services, Inc. in the United States District Court for the Southern District of Alabama, alleging wrongful arrest, wrongful attachment and conversion of the saturation-diving system (the “Alabama Proceeding”). In its complaint, OSA claimed damages for loss of revenue in excess of $10 million and physical damage to the equipment and requested punitive damages, attorneys’ fees and costs. Recently, OSA has asserted damages are in excess of $25 million. Discovery is ongoing and a trial date has been set for February 2012 in the Alabama Proceeding. We have not accrued any amounts related to this litigation. Although there is a possibility of an adverse judgment in the Alabama Proceeding, the amount or potential range of loss is not estimable at this time. McDermott contests the validity of Plaintiff’s claims as well as its alleged damages, which to date, remain unsubstantiated. We intend to vigorously defend the claims in the Alabama Proceeding and to continue to pursue payment of the charter hire in the Supreme Court of Nova Scotia.

The following discussion presents the remaining pending litigation contained in Note 14 – Commitments and Contingencies in our Annual Report on Form 10-K for the year ended December 31, 2010 and Note 9 – Commitments and Contingencies in our Form 10-Q for the quarter ended March 31, 2011, for which there have been no material developments.

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, 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, and an environmental claim involving Babcock & Wilcox Power Generation Group, Inc., a subsidiary of B&W (“B&W PGG”). 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 the Company has given notice that it 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.

In a proceeding entitled Antoine, et al. vs. J. Ray McDermott, Inc., et al., filed in the 24th Judicial District Court, Jefferson Parish, Louisiana, approximately 88 plaintiffs filed suit against approximately 215 defendants, including JRMI and Delta Hudson Engineering Corporation (“DHEC”), another affiliate of ours, generally alleging injuries for exposure to asbestos, and unspecified chemicals, metals and noise while the plaintiffs were allegedly employed as Jones Act seamen. On January 10, 2007, the District Court dismissed the plaintiffs’ claims, without prejudice to their right to refile their claims. On January 29, 2007, in a matter entitled Boudreaux, et al. v. McDermott, Inc., et al., originally filed in the United States District Court for the Southern District of Texas, 21 plaintiffs originally named in the Antoine matter filed suit against JRMI, MI and approximately 30 other employer defendants, alleging Jones Act seaman status and generally alleging exposure to welding fumes, solvents, dyes, industrial paints and noise. Boudreaux was transferred to the United States District Court for the Eastern District of Louisiana on May 2, 2007. The District Court 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, in a matter entitled Antoine, et al. v. McDermott, Inc., et al., filed in the 164th Judicial District Court for Harris County, Texas, 43 plaintiffs originally named in the Antoine matter filed suit against JRMI, MI 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 this matter other than service of process and answer/appearance dates until further order of the Court. The Antoine 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 cases and attorneys’ fees in the new Antoine case.

Additionally, due to the nature of our business, we are, from time to time, involved in routine litigation or subject to other 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, 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.

Environmental Matters

We have been identified as a potentially responsible party at various cleanup sites under the Comprehensive Environmental Response, Compensation, and Liability Act, as amended (“CERCLA”) and other state and foreign CERCLA-type environmental laws. Such 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, 2011 we had total environmental reserves of $0.9 million, of which $0.4 million 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.

During the quarter ended June 30, 2011, we recovered $2.0 million of environmental reserves associated with the April 2006 sale of our former Mexican subsidiary, Talleres Navales del Golfo, S.A. de C.V. (“TNG”). TNG was reported as a discontinued operation in our consolidated financial statements for the year ended December 31, 2006, and accordingly, the recovery of this reserve is included in income from discontinued operations, net of tax for the three-month and six-month periods ended June 30, 2011.

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, 2011, it is possible that we may incur liabilities for liquidated damages aggregating approximately $42 million, of which approximately $5 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 July 2009 to August 2011. We believe we will be successful in obtaining schedule extensions or other customer-agreed changes that should resolve the potential for additional liquidated damages being incurred. However, we may not achieve relief on some or all of the issues. We do not believe any amounts for these potential liquidated damages in excess of the amounts recorded in our financial statements are probable of being paid by us.

Other

MII, B&W PGG and McDermott Holdings, Inc., which in connection with the spin-off of B&W was renamed Babcock & Wilcox Holdings, Inc. and merged with B&W, have jointly executed general agreements of indemnity in favor of various surety underwriters relating to surety bonds those underwriters issued in support of B&W PGG’s contracting activity. As of June 30, 2011, bonds issued under such arrangements totaled $82.3 million. Pursuant to the master separation agreement entered into between us and B&W in connection with the spin-off, B&W has agreed to indemnify us with respect to any losses we may incur in connection with these surety bonds.

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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, 2009	$ 1,833,100	$ 236,919	$ 1,300,998	$ 951,647	$ (69,370)	$ (612,997)	$ 1,807,197	$ 25,903
Beginning Balance (in shares) at Dec. 31, 2009		236,919,404
Net income	149,725			135,975			135,975	13,750
Other comprehensive income, net of tax	14,547					14,556	14,556	(9)
Exercise of stock options (in shares)		323,619
Exercise of stock options	343	324	669		(650)		343
Excess tax benefits on stock options	2,127		2,127				2,127
Contributions to thrift plan (in shares)		282,022
Contributions to thrift plan	6,923	282	6,641				6,923
Share vesting (in shares)		1,738,734
Share vesting		1,739	(1,739)
Purchase of treasury shares	(13,264)				(13,264)		(13,264)
Stock-based compensation charges, net of tax	35,091		35,091				35,091
Distributions to noncontrolling interests and other	7							7
Acquisition of noncontrolling interests	2,682							2,682
Ending Balance at Jun. 30, 2010	2,031,281	239,264	1,343,787	1,087,622	(83,284)	(598,441)	1,988,948	42,333
Ending Balance (in shares) at Jun. 30, 2010		239,263,779
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					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, net of tax	10,524		10,524				10,524
Distributions to noncontrolling interests and other	(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

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Selected Financial Information Regarding the Results of Operations of Former B&W Business (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Income (loss) from discontinued operations, net of tax	$ 3,610	$ (2,657)	$ 5,272	$ 5,722
The Babcock and Wilcox Company
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		688,496		1,350,884
Loss on disposal of discontinued operations		(66,218)		(90,420)
Income before provision for income taxes		81,267		118,138
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax, Total		15,049		27,718
Provision for income taxes		20,552		26,881
Total Income (loss) from discontinued operations, net of tax		$ (5,503)		$ 837

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STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2011

STOCK-BASED COMPENSATION

NOTE 6 – STOCK-BASED COMPENSATION

In connection with the spin-off of B&W, we made certain adjustments to our stock-based compensation awards. For holders of performance shares issued in or prior to May 2009, we cancelled the performance shares and issued restricted stock in an amount equal to the fair value of the shares held immediately prior to the spin-off. For holders of restricted stock granted in or prior to May 2010, the holder received additional units of restricted stock to maintain the total fair value of restricted stock held immediately prior to the spin-off. For stock options granted in or prior to May 2010, we adjusted the number of options held by each holder so that the intrinsic value of the stock options held immediately following the spin-off equaled the intrinsic value of the stock options held immediately prior to the spin-off.

Total stock-based compensation expense, net recognized for the three months and six months ended June 30, 2011 and 2010 is as follows:

	Three Months Ended June  30, 2011				Six Months Ended June 30, 2011
	2011		2010(1)		2011		2010(1)
	(Unaudited) (In thousands)
Stock Options	$	1,062	$	439	$	1,870	$	745
Restricted Stock and Restricted Stock Units		3,466		1,811		8,151		3,632
Performance Shares and Deferred Stock Units		381		859		503		1,842
Total	$	4,909	$	3,109	$	10,524	$	6,219

⁽¹⁾ Unrealized tax benefits for the three-month and six-month periods ended June 30, 2010 was $1.2 million and $2.6 million, respectively.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2011

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 and major oil and gas companies, and we operate in most major offshore oil and gas producing regions throughout the world. In these notes to our 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, 2010.

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 July 30, 2010, we completed the spin-off of our previously reported Government Operations and Power Generation Systems segments into an independent publicly traded company named The Babcock & Wilcox Company (“B&W”). Additionally, during the quarter ended September 30, 2010, we committed to a plan to sell our charter fleet business which operates 10 of the 14 vessels acquired in our 2007 acquisition of substantially all of the assets of Secunda International Limited. The condensed consolidated balance sheets reflect the charter fleet business as held for sale. The condensed consolidated statements of income and the condensed consolidated statements of cash flows reflect the historical operations of B&W for 2010 and the charter fleet business for all periods presented as discontinued operations. The 2010 condensed consolidated statement of equity and the condensed consolidated statements of comprehensive income for the three-month and six-month periods ended June 30, 2010 contain amounts attributable to the spun-off B&W operations. We have presented the notes to our condensed consolidated financial statements on the basis of continuing operations.

Business Segments

Business Segments

See Note 7 for summarized financial information on our segments. We have the following reporting segments:

• Asia Pacific

• Atlantic

• Middle East

• Corporate

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 revenues and related costs recorded, plus accumulated contract costs that exceed amounts invoiced to customers under the terms of the contracts, in contracts in progress. We include in advance billings on contracts, billings that exceed accumulated contract costs and revenues and costs recognized under the percentage-of-completion method. Most long-term contracts contain provisions for progress payments. We expect to invoice customers for all unbilled revenues. Certain costs are excluded from the cost-to-cost method of measuring progress, such as significant costs for materials and major third-party subcontractors, if it appears that such exclusion would result in a more meaningful measurement of actual contract progress and resulting periodic allocation of income. 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 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 profit 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 one active contract being accounted for under our deferred profit recognition policy.

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 did not enter into any significant contracts that we have accounted for under the completed contract method during the quarters ended June 30, 2011 and June 30, 2010.

Variations from estimated contract performance could result in material adjustments to operating results for any fiscal quarter or year. We include claims for extra work or changes in scope of work, to the extent of costs incurred, in contract revenues when we believe collection is probable. For all contracts, if a current estimate of total contract costs 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.

Impairment Review

Impairment Review

We review goodwill for impairment on an annual basis or more frequently if circumstances indicate that an impairment may exist. The annual impairment review, which is performed as of December 31, involves comparing the fair value of each applicable operating segment with its net book value 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 estimated undiscounted future cash flows associated with an asset are compared to the carrying value of the asset to determine if impairment exists, in which case an impairment is recognized for the difference between the recorded and fair value of the asset.

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 some significant litigation and other proceedings, as discussed in Note 9. We have accrued our estimates of the probable losses associated with these matters. 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, 2011, we had restricted cash and cash equivalents of $158.9 million in the aggregate, of which $157.7 million was held in restricted foreign-entity accounts, $0.2 million was held to meet reinsurance reserve requirements of our captive insurance subsidiary and $1.0 million was classified as non-current and is included in other assets in the accompanying condensed consolidated balance sheet. As further discussed in Note 10, subsequent to the quarter ended June 30, 2011, we restructured certain consolidated subsidiaries, which account for approximately $147.0 million of our restricted cash balance at June 30, 2011, resulting in the removal of the restrictions on the available funds. As a result, we expect to reclassify the $147.0 million to cash and cash equivalents in the quarter ending September 30, 2011.

Investments

Investments

At June 30, 2011, we had investments with a fair value of $238.6 million. For the six-month period ended June 30, 2011, we had $424.4 million and $377.0 million of sales and maturities and purchases, respectively. Our investment portfolio consists primarily of investments in government and agency obligations and commercial paper. 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 $3.7 million and $4.3 million at June 30, 2011 and December 31, 2010, respectively. The major components of our investments in an unrealized loss position are asset-backed and mortgage-backed obligations. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired at June 30, 2011.

Comprehensive Loss

Comprehensive Loss

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

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,857	)	$	(6,888	)
Net loss on investments		(3,674	)		(4,330	)
Net gain (loss) on derivative financial instruments		8,867			(855	)
Unrecognized losses on benefit obligations		(131,705	)		(151,644	)
Accumulated other comprehensive loss	$	(129,369	)	$	(163,717	)

Recently Adopted Accounting Standards

Recently Adopted Accounting Standards

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. We do not expect the adoption of this update to have a material impact on our condensed consolidated financial statements.

In January 2010, the FASB issued a revision to the topic Fair Value Measurements and Disclosures. This revision sets forth new rules on providing enhanced information for Level 3 measurements. We adopted the disclosure provisions required by this revision on January 1, 2011, for both interim and annual disclosures, which did not have a material impact on our condensed consolidated financial statements.

We do not expect other recently issued standards and updates to have a material impact on our condensed consolidated financial statements.

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SEGMENT REPORTING

6 Months Ended

Jun. 30, 2011

SEGMENT REPORTING

NOTE 7 – SEGMENT REPORTING

We report our financial results under four reporting segments, consisting of Asia Pacific, Atlantic, Middle East and Corporate. Our Corporate segment primarily reflects corporate personnel and activities, incentive compensation programs and other costs. Costs incurred in our Corporate segment are generally fully allocated to our other segments. We account for intersegment sales at prices that we generally establish by reference to similar transactions with unaffiliated customers. 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,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Revenues:
Asia Pacific	$	547,833		$	224,078		$	1,022,646		$	444,944
Atlantic		52,552			48,328			92,446			102,594
Middle East		249,416			354,738			633,949			584,488
Total revenues	$	849,801		$	627,144		$	1,749,041		$	1,132,026
Segment revenues include the following intersegment transfers and eliminations:
Atlantic	$	217		$	5,234		$	297		$	9,042
Middle East		—			330			—			330
Eliminations		(217	)		(5,564	)		(297	)		(9,372	)
Total adjustments and eliminations	$	—		$	—		$	—		$	—
Operating income:
Asia Pacific	$	58,511		$	30,484		$	97,390		$	75,105
Atlantic		(16,607	)		(23,369	)		(34,244	)		(26,716	)
Middle East		41,875			91,027			120,931			122,940
Total operating income	$	83,779		$	98,142		$	184,077		$	171,329
Capital expenditures:
Asia Pacific	$	11,431		$	701		$	38,417		$	7,184
Atlantic		54,148			22,338			82,900			32,681
Middle East		5,781			22,016			13,492			51,593
Corporate		6,336			4,149			6,873			6,158
Total capital expenditures(1)	$	77,696		$	49,204		$	141,682		$	97,616
Depreciation and amortization:
Asia Pacific	$	6,616		$	3,698		$	12,352		$	9,083
Atlantic		3,448			4,658			7,241			9,747
Middle East		6,566			6,503			13,929			11,404
Corporate		2,944			4,177			6,577			7,589
Total depreciation and amortization	$	19,574		$	19,036		$	40,099		$	37,823

⁽¹⁾  Total capital expenditures excludes $6.9 million and $10.5 million in accrued capital expenditures for the six months ended June 30, 2011 and 2010, respectively.

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Segment assets:
Asia Pacific	$	838,350	$	564,403
Atlantic		362,076		265,607
Middle East		854,925		1,302,398
Corporate		559,961		378,969
Total continuing operations		2,615,312		2,511,377
Total discontinued operations		91,985		87,311
Total assets	$	2,707,297	$	2,598,688

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DISCONTINUED OPERATIONS - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Sep. 30, 2010 Charter Fleet Business	Jul. 30, 2010 The Babcock and Wilcox Company
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write-down on carrying value of assets disposal of discontinued operations	$ 27.7
Outstanding common stock received In connection with the spin-off of B&W, Percentage		100.00%
Outstanding common stock received In connection with the spin-off of B&W, shares		116
B&W common stock received for every shares of common stock		In connection with the spin-off, our stockholders received 100% (approximately 116 million shares) of the outstanding common stock of B&W. The distribution of B&W common stock occurred by way of a pro rata stock dividend to our stockholders. Each stockholder generally received one share of B&W common stock for every two shares of our common stock held by such stockholder on July 9, 2010, and cash in lieu of any fractional shares. Prior to the completion of the spin-off, B&W made a cash distribution to us totaling $100 million.
Cash distribution to MII to maintain appropriate working capital and liquidity levels		$ 100

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2011

FAIR VALUE MEASUREMENTS

NOTE 5 – FAIR VALUE MEASUREMENTS

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

	6/30/11		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds(1)	$	2,081	$	—	$	2,081	$	—
Commercial paper		142,862		—		142,862		—
U.S. Government and agency securities(2)		84,242		78,494		5,748		—
Asset-backed securities and collateralized mortgage obligations(3)		9,435		—		2,363		7,072
Total	$	238,620	$	78,494	$	153,054	$	7,072

	12/31/10		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds	$	2,007	$	—	$	2,007	$	—
U.S. Government and agency securities		269,161		269,161		—		—
Asset-backed securities and collateralized mortgage obligations		9,869		—		2,497		7,372
Corporate notes and bonds		4,168		—		4,168		—
Total	$	285,205	$	269,161	$	8,672	$	7,372

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

⁽²⁾ Investments in U.S. Treasury securities with maturities of two years or less.

⁽³⁾ Asset-backed and mortgage-backed securities with maturities of up to 26 years.

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, 2011 and 2010:

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Balance at beginning of period	$	7,503		$	7,723		$	7,372		$	7,494
Total realized and unrealized gains (losses)		(39	)		397			465			1,277
Purchases, issuances and settlements		—			—			—			(111	)
Principal repayments		(392	)		(465	)		(765	)		(1,005	)
Balance at end of period	$	7,072		$	7,655		$	7,072		$	7,655

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.

Other Financial Instruments

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

	June 30, 2011				December 31, 2010
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Debt	$	81,862	$	82,283	$	55,295	$	56,180
Forward contracts, net	$	1,460	$	1,460	$	1,352	$	1,352

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

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

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

Short-term and long-term debt. We base the fair values of debt instruments on quoted market prices. Where quoted prices are not available, we base the fair values 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 determined using observable financial market inputs, such as quoted market prices.

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SUBSEQUENT EVENTS - Additional Information (Detail) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
(Increase) decrease in restricted cash and cash equivalents	$ (101,568)	$ 112,286
Restructured Controlled Entities | Subsequent Event
(Increase) decrease in restricted cash and cash equivalents	$ 147,000

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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Common stock, par value	$ 1.00	$ 1.00
Common stock, authorized	400,000,000	400,000,000
Common stock, issued	242,152,460	240,791,473
Treasury stock, shares	7,185,432	6,906,262

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2011

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 and major oil and gas companies, and we operate in most major offshore oil and gas producing regions throughout the world. In these notes to our 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, 2010.

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 July 30, 2010, we completed the spin-off of our previously reported Government Operations and Power Generation Systems segments into an independent publicly traded company named The Babcock & Wilcox Company (“B&W”). Additionally, during the quarter ended September 30, 2010, we committed to a plan to sell our charter fleet business which operates 10 of the 14 vessels acquired in our 2007 acquisition of substantially all of the assets of Secunda International Limited. The condensed consolidated balance sheets reflect the charter fleet business as held for sale. The condensed consolidated statements of income and the condensed consolidated statements of cash flows reflect the historical operations of B&W for 2010 and the charter fleet business for all periods presented as discontinued operations. The 2010 condensed consolidated statement of equity and the condensed consolidated statements of comprehensive income for the three-month and six-month periods ended June 30, 2010 contain amounts attributable to the spun-off B&W operations. We have presented the notes to our condensed consolidated financial statements on the basis of continuing operations.

Business Segments

See Note 7 for summarized financial information on our segments. We have the following reporting segments:

• Asia Pacific

• Atlantic

• Middle East

• Corporate

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 revenues and related costs recorded, plus accumulated contract costs that exceed amounts invoiced to customers under the terms of the contracts, in contracts in progress. We include in advance billings on contracts, billings that exceed accumulated contract costs and revenues and costs recognized under the percentage-of-completion method. Most long-term contracts contain provisions for progress payments. We expect to invoice customers for all unbilled revenues. Certain costs are excluded from the cost-to-cost method of measuring progress, such as significant costs for materials and major third-party subcontractors, if it appears that such exclusion would result in a more meaningful measurement of actual contract progress and resulting periodic allocation of income. 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 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 profit 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 one active contract being accounted for under our deferred profit recognition policy.

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 did not enter into any significant contracts that we have accounted for under the completed contract method during the quarters ended June 30, 2011 and June 30, 2010.

Variations from estimated contract performance could result in material adjustments to operating results for any fiscal quarter or year. We include claims for extra work or changes in scope of work, to the extent of costs incurred, in contract revenues when we believe collection is probable. For all contracts, if a current estimate of total contract costs 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.

Impairment Review

We review goodwill for impairment on an annual basis or more frequently if circumstances indicate that an impairment may exist. The annual impairment review, which is performed as of December 31, involves comparing the fair value of each applicable operating segment with its net book value 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 estimated undiscounted future cash flows associated with an asset are compared to the carrying value of the asset to determine if impairment exists, in which case an impairment is recognized for the difference between the recorded and fair value of the asset.

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 some significant litigation and other proceedings, as discussed in Note 9. We have accrued our estimates of the probable losses associated with these matters. 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, 2011, we had restricted cash and cash equivalents of $158.9 million in the aggregate, of which $157.7 million was held in restricted foreign-entity accounts, $0.2 million was held to meet reinsurance reserve requirements of our captive insurance subsidiary and $1.0 million was classified as non-current and is included in other assets in the accompanying condensed consolidated balance sheet. As further discussed in Note 10, subsequent to the quarter ended June 30, 2011, we restructured certain consolidated subsidiaries, which account for approximately $147.0 million of our restricted cash balance at June 30, 2011, resulting in the removal of the restrictions on the available funds. As a result, we expect to reclassify the $147.0 million to cash and cash equivalents in the quarter ending September 30, 2011.

Investments

At June 30, 2011, we had investments with a fair value of $238.6 million. For the six-month period ended June 30, 2011, we had $424.4 million and $377.0 million of sales and maturities and purchases, respectively. Our investment portfolio consists primarily of investments in government and agency obligations and commercial paper. 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 $3.7 million and $4.3 million at June 30, 2011 and December 31, 2010, respectively. The major components of our investments in an unrealized loss position are asset-backed and mortgage-backed obligations. Based on our analysis of these investments, we believe that none of our available-for-sale securities were other than temporarily impaired at June 30, 2011.

Accounts Receivable – Trade, Net

A summary of contract receivables is as follows:

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	227,816		$	191,216
Completed contracts		121,787			85,587
Retainages		38,286			63,558
Unbilled		250			12,697
Less allowances		(30,897	)		(29,561	)
Accounts receivable—trade, net	$	357,242		$	323,497

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, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	38,286	$	63,558
Retainages expected to be collected after one year		95,305		83,143
Total retainages	$	133,591	$	146,701

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.

Comprehensive Loss

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

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,857	)	$	(6,888	)
Net loss on investments		(3,674	)		(4,330	)
Net gain (loss) on derivative financial instruments		8,867			(855	)
Unrecognized losses on benefit obligations		(131,705	)		(151,644	)
Accumulated other comprehensive loss	$	(129,369	)	$	(163,717	)

Recently Adopted Accounting Standards

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. We do not expect the adoption of this update to have a material impact on our condensed consolidated financial statements.

In January 2010, the FASB issued a revision to the topic Fair Value Measurements and Disclosures. This revision sets forth new rules on providing enhanced information for Level 3 measurements. We adopted the disclosure provisions required by this revision on January 1, 2011, for both interim and annual disclosures, which did not have a material impact on our condensed consolidated financial statements.

We do not expect other recently issued standards and updates to have a material impact on our condensed consolidated financial statements.

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Effect of Derivative Instruments on Financial Statements (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Derivatives Designated as Hedges:
Amount of gain (loss) recognized in other comprehensive income (loss)	$ 3,311	$ (7,318)	$ 11,378	$ (12,271)
Income (loss) reclassified from AOCI into income: effective portion, Cost of operations	93	2,625	(42)	2,887
Loss recognized in income: ineffective portion and amount excluded from effectiveness testing, Other income (expense) - net	$ 147	$ (1,717)	$ (1,823)	$ (4,066)

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Components of Accumulated Other Comprehensive Loss Included in Stockholders' Equity (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Foreign currency translation adjustments	$ (2,857)	$ (6,888)
Net loss on investments	(3,674)	(4,330)
Net gain (loss) on derivative financial instruments	8,867	(855)
Unrecognized losses on benefit obligations	(131,705)	(151,644)
Accumulated other comprehensive loss	$ (129,369)	$ (163,717)

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COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended									6 Months Ended		6 Months Ended
	Jun. 30, 2011 LegalMatter	Jun. 30, 2011 LegalMatter	Dec. 31, 2005 LegalMatter	Jan. 03, 2005 Counterclaim LegalMatter	Jan. 10, 2007 Boudreaux, et al. v. McDermott, Inc., et al. LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. United States District Court for the Eastern District of Louisiana LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. United States District Court for the Eastern District of Louisiana Other Employers than JRMI and MI LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. Judicial District Court for Harris County, Texas LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. Judicial District Court for Harris County, Texas Other Employers than JRMI and MI LegalMatter	Jan. 29, 2007 Boudreaux, et al. v. McDermott, Inc., et al. Judicial District Court for Harris County, Texas Maritime products LegalMatter	Jun. 30, 2011 Minimum	Apr. 13, 2010 Minimum	Jun. 30, 2011 Maximum
Commitments and Contingencies Disclosure [Line Items]
Plaintiffs' claims pending			13	20
Number of claimants agreed for settlement	13	13
Damages for loss of revenue and physical damage to the equipment, punitive damages, attorneys' fees and costs claimed by Oceanografia Sociedad Asnonima											$ 25	$ 10
Trial date		2012-02
Legal claims		In a proceeding entitled Antoine, et al. vs. J. Ray McDermott, Inc., et al., filed in the 24th Judicial District Court, Jefferson Parish, Louisiana, approximately 88 plaintiffs filed suit against approximately 215 defendants, including JRMI and Delta Hudson Engineering Corporation (“DHEC”), another affiliate of ours, generally alleging injuries for exposure to asbestos, and unspecified chemicals, metals and noise while the plaintiffs were allegedly employed as Jones Act seamen. On January 10, 2007, the District Court dismissed the plaintiffs’ claims, without prejudice to their right to refile their claims. On January 29, 2007, in a matter entitled Boudreaux, et al. v. McDermott, Inc., et al., originally filed in the United States District Court for the Southern District of Texas, 21 plaintiffs originally named in the Antoine matter filed suit against JRMI, MI and approximately 30 other employer defendants, alleging Jones Act seaman status and generally alleging exposure to welding fumes, solvents, dyes, industrial paints and noise. Boudreaux was transferred to the United States District Court for the Eastern District of Louisiana on May 2, 2007. The District Court 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, in a matter entitled Antoine, et al. v. McDermott, Inc., et al., filed in the 164th Judicial District Court for Harris County, Texas, 43 plaintiffs originally named in the Antoine matter filed suit against JRMI, MI 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 this matter other than service of process and answer/appearance dates until further order of the Court. The Antoine 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 cases and attorneys’ fees in the new Antoine case.
Number of plaintiffs					88	21		43
Number of defendants					215		30		65	42
Environmental reserve	0.9	0.9
Environmental reserve, current	0.4	0.4
Surety bonds issued	82.3	82.3
Environmental reserve recovered	2.0
Aggregate possible liquidated damage due to failure to meet specified contractual milestone dates, Offshore Oil and Gas Construction segment	42	42
Liquidated damage contingencies, accrued	$ 5	$ 5
Trigger dates, potential liquidated damages											2009-07-31		2011-08-31

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DISCONTINUED OPERATIONS

6 Months Ended

Jun. 30, 2011

DISCONTINUED OPERATIONS

NOTE 2 – DISCONTINUED OPERATIONS

The following discussion provides information pertaining to our significant discontinued operations.

Charter Fleet Business

In conjunction with classifying the charter fleet business as a discontinued operation during the quarter ended September 30, 2010, we recognized a $27.7 million write-down of the carrying value of these assets to their estimated net realizable value, based on the estimated fair value of consideration expected from the sale and estimated selling costs.

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,
	2011		2010		2011		2010
	(Unaudited) (In thousands)
Revenues	$	11,062	$	17,921	$	20,566	$	32,582
Income before provision for income taxes		2,330		3,261		4,741		6,404
Provision for income taxes		720		415		1,469		1,519
Income from discontinued operations, net of tax	$	1,610	$	2,846	$	3,272	$	4,885

The following table presents the carrying values of the major classes of assets and liabilities held for sale that are included in our unaudited condensed consolidated balance sheets:

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Cash	$	1,968	$	1,426
Accounts receivable – net		8,357		5,253
Other assets		3,550		3,482
Total current assets held for sale		13,875		10,161
Property, plant and equipment – net		69,401		68,595
Other assets		8,709		8,555
Total long-term assets held for sale		78,110		77,150
Total assets held for sale	$	91,985	$	87,311
Accounts payable and accrued liabilities	$	8,372	$	8,748
Other liabilities		14,540		12,154
Total liabilities associated with assets held for sale	$	22,912	$	20,902

Spin-off of B&W

On July 30, 2010, we completed the spin-off of B&W to our stockholders through a stock distribution. B&W’s assets and businesses primarily consisted of those that we previously reported as our Government Operations and Power Generation Systems segments. In connection with the spin-off, our stockholders received 100% (approximately 116 million shares) of the outstanding common stock of B&W. The distribution of B&W common stock occurred by way of a pro rata stock dividend to our stockholders. Each stockholder generally received one share of B&W common stock for every two shares of our common stock held by such stockholder on July 9, 2010, and cash in lieu of any fractional shares. Prior to the completion of the spin-off, B&W made a cash distribution to us totaling $100 million.

In order to effect the distribution and govern MII’s relationship with B&W after the distribution, MII and B&W entered into a master separation agreement and several other agreements, including a tax sharing agreement and transition services agreements.

Financial Information

The following table presents selected financial information regarding the results of operations of our former B&W business for the three-month and six-month periods ended June 30, 2010. Loss on disposal of discontinued operations represents costs incurred in connection with the B&W spin-off.

	Three Months Ended June 30, 2010			Six Months Ended June 30, 2010
	(Unaudited) (In thousands)
Revenues	$	688,496		$	1,350,884
Loss on disposal of discontinued operations		(66,218	)		(90,420	)
Income before provision for income taxes		81,267			118,138
		15,049			27,718
Provision for income taxes		20,552			26,881
Income (loss) from discontinued operations, net of tax	$	(5,503	)	$	837

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Available-for-Sale Securities Measured at Fair Value (Parenthetical) (Detail) (Maximum)	Jun. 30, 2011 Year
U.S. Government and agency securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, maturities	2
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, maturities	26

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional information (Detail) (USD $)	6 Months Ended			3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Sep. 30, 2010 Charter Fleet Business Vessel	Sep. 30, 2010 Secunda International Limited Vessel	Jun. 30, 2011 Restructured Controlled Entities Subsequent Event
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of vessels				10	14
Percentage of completion to recognize expected profit	70.00%
Restricted cash and cash equivalents	$ 157,911,000		$ 197,861,000			$ 147,000,000
Restricted cash and cash equivalents, restricted foreign accounts	157,700,000
(Increase) decrease in restricted cash and cash equivalents	(101,568,000)	112,286,000				147,000,000
Restricted cash and cash equivalents, reinsurance reserve requirements	200,000
Restricted cash and cash equivalents, non-current	1,000,000
Available-for-sale securities	238,620,000		285,205,000
Sales and maturities of investments	424,400,000
Purchases of investments	377,000,000
Accumulated other comprehensive loss, Available for sale investments, unrealized losses, net of tax	$ 3,700,000		$ 4,300,000

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Selected Financial Information Regarding the Results of Operations of Charter Fleet Business (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Income (loss) from discontinued operations, net of tax	$ 3,610	$ (2,657)	$ 5,272	$ 5,722
Charter Fleet Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	11,062	17,921	20,566	32,582
Income before provision for income taxes	2,330	3,261	4,741	6,404
Provision for income taxes	720	415	1,469	1,519
Total Income (loss) from discontinued operations, net of tax	$ 1,610	$ 2,846	$ 3,272	$ 4,885

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Available-for-Sale Securities Measured at Fair Value (Detail) (USD $) In Thousands	Jun. 30, 2011		Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 238,620		$ 285,205
Level 1
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	78,494		269,161
Level 1 | U.S. Government and agency securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	78,494	[1]	269,161
Level 2
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	153,054		8,672
Level 2 | Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,081	[2]	2,007
Level 2 | Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	142,862
Level 2 | U.S. Government and agency securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	5,748	[1]
Level 2 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,363	[3]	2,497
Level 2 | Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities			4,168
Level 3
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	7,072		7,372
Level 3 | Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	7,072	[3]	7,372
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	2,081	[2]	2,007
Commercial Paper
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	142,862
U.S. Government and agency securities
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	84,242	[1]	269,161
Asset-backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	9,435	[3]	9,869
Corporate notes and bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities			$ 4,168

[1] Investments in U.S. Treasury securities with maturities of two years or less.

[2] Various U.S. equities and other investments managed under mutual funds.

[3] Asset-backed and mortgage-backed securities with maturities of up to 26 years.

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Retainages on Contracts (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages expected to be collected within one year	$ 38,286	$ 63,558
Retainages expected to be collected after one year	95,305	83,143
Total retainages	$ 133,591	$ 146,701

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SUBSEQUENT EVENT

6 Months Ended

Jun. 30, 2011

SUBSEQUENT EVENT

NOTE 10 – SUBSEQUENT EVENT

Subsequent to June 30, 2011, we restructured certain consolidated subsidiaries for which we had classified approximately $147.0 million of restricted cash and cash equivalents as of June 30, 2011. As a result of the restructuring, we removed the restrictions on the available funds and expect to reclassify $147.0 million of restricted cash to cash and cash equivalents in the quarter ending September 30, 2011.

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PENSION PLANS

6 Months Ended

Jun. 30, 2011

PENSION PLANS

NOTE 3 – PENSION PLANS

We historically provided retirement benefits for certain U.S.-based employees through the McDermott (U.S.) Retirement Plan (the “McDermott Plan”) and other supplemental defined pension benefits. The McDermott Plan and the supplemental defined pension benefits are collectively referred to as the “Domestic Plan.” The J. Ray McDermott, S.A. Third Country National Employees Pension Plan (the “TCN Plan”) provides retirement benefits for certain of our foreign employees.

During the quarter ended June 30, 2011, we changed the investment strategy of the McDermott Plan to approximately 85% fixed income and approximately 15% equities, which caused us to remeasure the plan’s assets and benefit obligations. In connection with the investment strategy change, we increased the expected rate of return on plan assets assumption to 6.50%, as compared to 5.75% at December 31, 2010, which is consistent with the long-term asset returns expected from the portfolio after the investment strategy change. Additionally, the discount rate assumption increased to 5.40%, as compared to 5.30% at December 31, 2010.

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

	Domestic Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Service cost	$	—		$	180		$	—		$	348
Interest cost		7,155			10,142			14,230			19,643
Expected return on plan assets		(7,550	)		(10,205	)		(14,075	)		(19,765	)
Recognized net actuarial loss and other		4,482			5,500			8,730			10,653
Curtailments		(8	)		—			(8	)		—
Net periodic benefit cost	$	4,079		$	5,617		$	8,877		$	10,879
	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Service cost	$	686		$	576		$	1,371		$	1,152
Interest cost		595			546			1,190			1,092
Expected return on plan assets		(613	)		(457	)		(1,226	)		(914	)
Amortization of prior service cost		4			546			8			1,092
Recognized net actuarial loss		684			—			1,368			—
Net periodic benefit cost	$	1,356		$	1,211		$	2,711		$	2,422

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DISCONTINUED OPERATIONS (Tables)

6 Months Ended

Jun. 30, 2011

Selected Financial Information Regarding the Results of Operations Attributable to 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,
	2011		2010		2011		2010
	(Unaudited) (In thousands)
Revenues	$	11,062	$	17,921	$	20,566	$	32,582
Income before provision for income taxes		2,330		3,261		4,741		6,404
Provision for income taxes		720		415		1,469		1,519
Income from discontinued operations, net of tax	$	1,610	$	2,846	$	3,272	$	4,885

Carrying Values of the Major Classes of Assets and Liabilities Held for Sale Included in Condensed Consolidated Balance Sheets

The following table presents the carrying values of the major classes of assets and liabilities held for sale that are included in our unaudited condensed consolidated balance sheets:

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Cash	$	1,968	$	1,426
Accounts receivable – net		8,357		5,253
Other assets		3,550		3,482
Total current assets held for sale		13,875		10,161
Property, plant and equipment – net		69,401		68,595
Other assets		8,709		8,555
Total long-term assets held for sale		78,110		77,150
Total assets held for sale	$	91,985	$	87,311
Accounts payable and accrued liabilities	$	8,372	$	8,748
Other liabilities		14,540		12,154
Total liabilities associated with assets held for sale	$	22,912	$	20,902

Selected Financial Information Regarding the Results of Operations of Former B&W Business

The following table presents selected financial information regarding the results of operations of our former B&W business for the three-month and six-month periods ended June 30, 2010. Loss on disposal of discontinued operations represents costs incurred in connection with the B&W spin-off.

	Three Months Ended June 30, 2010			Six Months Ended June 30, 2010
	(Unaudited) (In thousands)
Revenues	$	688,496		$	1,350,884
Loss on disposal of discontinued operations		(66,218	)		(90,420	)
Income before provision for income taxes		81,267			118,138
		15,049			27,718
Provision for income taxes		20,552			26,881
Income (loss) from discontinued operations, net of tax	$	(5,503	)	$	837

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Summary of Derivative Financial Instruments (Detail) (Foreign Exchange Contract, USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Derivatives Designated as Hedges:
Asset Derivatives Fair Value	$ 17,936	$ 9,291
Liability Derivatives Fair Value	16,476	7,940
Accounts Receivable - other
Derivatives Designated as Hedges:
Asset Derivatives Fair Value	15,922	6,066
Other Assets
Derivatives Designated as Hedges:
Asset Derivatives Fair Value	2,014	3,225
Accounts Payable
Derivatives Designated as Hedges:
Liability Derivatives Fair Value	8,684	2,207
Other Liabilities
Derivatives Designated as Hedges:
Liability Derivatives Fair Value	$ 7,792	$ 5,733

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Summary of Contract Receivables (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainages	$ 38,286	$ 63,558
Unbilled	250	12,697
Less allowances	(30,897)	(29,561)
Accounts receivable-trade, net	357,242	323,497
Contracts in progress
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract receivables	227,816	191,216
Completed contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract receivables	$ 121,787	$ 85,587

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 301,895	$ 403,463
Restricted cash and cash equivalents (Note 1)	157,911	197,861
Investments	173,469	209,463
Accounts receivable-trade, net (Note 1)	357,242	323,497
Accounts receivable-other	52,291	28,447
Contracts in progress	165,603	65,853
Deferred income taxes	20,170	10,323
Assets held for sale (Note 2)	13,875	10,161
Other current assets	42,889	36,570
Total Current Assets	1,285,345	1,285,638
Property, Plant and Equipment	1,863,865	1,720,040
Less accumulated depreciation	(842,930)	(804,471)
Net Property, Plant and Equipment	1,020,935	915,569
Assets Held for Sale (Note 2)	78,110	77,150
Investments	65,151	75,742
Goodwill	41,202	41,202
Investments in Unconsolidated Affiliates	46,524	45,016
Other Assets	170,030	158,371
Total Assets	2,707,297	2,598,688
Current Liabilities:
Notes payable and current maturities of long-term debt	7,357	8,547
Accounts payable	280,450	252,974
Accrued liabilities	287,983	286,831
Advance billings on contracts	92,422	250,053
Deferred income taxes	3,479	12,849
Income taxes payable	56,591	32,851
Liabilities associated with assets held for sale (Note 2)	22,912	20,902
Total Current Liabilities	751,194	865,007
Long-Term Debt	74,505	46,748
Self-Insurance	37,590	35,655
Pension Liability	44,495	52,831
Other Liabilities	102,445	86,180
Commitments and Contingencies (Note 9)
Stockholders' Equity:
Common stock, par value $1.00 per share, authorized 400,000,000 shares; issued 242,152,460 and 240,791,473 shares at June 30, 2011 and December 31, 2010, respectively	242,152	240,791
Capital in excess of par value	1,368,570	1,357,316
Retained earnings	238,121	100,373
Treasury stock, at cost, 7,185,432 and 6,906,262 shares at June 30, 2011 and December 31, 2010, respectively	(92,770)	(85,735)
Accumulated other comprehensive loss	(129,369)	(163,717)
Stockholders' Equity-McDermott International, Inc.	1,626,704	1,449,028
Noncontrolling Interests	70,364	63,239
Total Equity	1,697,068	1,512,267
Total Liabilities and Equity	$ 2,707,297	$ 2,598,688

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PENSION PLANS (Tables)

6 Months Ended

Jun. 30, 2011

Net Periodic Benefit Cost for the Domestic Plan and the TCN Plan

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

	Domestic Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Service cost	$	—		$	180		$	—		$	348
Interest cost		7,155			10,142			14,230			19,643
Expected return on plan assets		(7,550	)		(10,205	)		(14,075	)		(19,765	)
Recognized net actuarial loss and other		4,482			5,500			8,730			10,653
Curtailments		(8	)		—			(8	)		—
Net periodic benefit cost	$	4,079		$	5,617		$	8,877		$	10,879
	TCN Plan
	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Service cost	$	686		$	576		$	1,371		$	1,152
Interest cost		595			546			1,190			1,092
Expected return on plan assets		(613	)		(457	)		(1,226	)		(914	)
Amortization of prior service cost		4			546			8			1,092
Recognized net actuarial loss		684			—			1,368			—
Net periodic benefit cost	$	1,356		$	1,211		$	2,711		$	2,422

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Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, Carrying Value	$ 81,862	$ 55,295
Forward contracts, Carrying Value	1,460	1,352
Debt, Fair Value	82,283	56,180
Forward contracts, Fair Value	$ 1,460	$ 1,352

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Available-for-Sale Securities Measured at Fair Value

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

	6/30/11		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds(1)	$	2,081	$	—	$	2,081	$	—
Commercial paper		142,862		—		142,862		—
U.S. Government and agency securities(2)		84,242		78,494		5,748		—
Asset-backed securities and collateralized mortgage obligations(3)		9,435		—		2,363		7,072
Total	$	238,620	$	78,494	$	153,054	$	7,072

	12/31/10		Level 1		Level 2		Level 3
	(Unaudited) (In thousands)
Mutual funds	$	2,007	$	—	$	2,007	$	—
U.S. Government and agency securities		269,161		269,161		—		—
Asset-backed securities and collateralized mortgage obligations		9,869		—		2,497		7,372
Corporate notes and bonds		4,168		—		4,168		—
Total	$	285,205	$	269,161	$	8,672	$	7,372

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

⁽²⁾ Investments in U.S. Treasury securities with maturities of two years or less.

⁽³⁾ Asset-backed and mortgage-backed securities with maturities of up to 26 years.

Changes in Level 3 Instrument Measured on a 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, 2011 and 2010:

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(Unaudited) (In thousands)
Balance at beginning of period	$	7,503		$	7,723		$	7,372		$	7,494
Total realized and unrealized gains (losses)		(39	)		397			465			1,277
Purchases, issuances and settlements		—			—			—			(111	)
Principal repayments		(392	)		(465	)		(765	)		(1,005	)
Balance at end of period	$	7,072		$	7,655		$	7,072		$	7,655

Estimated Fair Values of Financial Instruments

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

	June 30, 2011				December 31, 2010
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(Unaudited)
	(In thousands)
Balance Sheet Instruments
Debt	$	81,862	$	82,283	$	55,295	$	56,180
Forward contracts, net	$	1,460	$	1,460	$	1,352	$	1,352

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010
Cash Flows From Operating Activities:
Net income	$ 145,863		$ 149,725
Less: Income from discontinued operations, net of tax	5,272		5,722
Income from continuing operations	140,591		144,003
Non-cash items included in net income:
Depreciation and amortization	40,099		37,823
Equity in (income) loss of unconsolidated affiliates	(1,551)		4,146
Gain on asset disposals and impairments - net	(296)		(2,306)
Provision (benefit) from deferred taxes	(11,648)		29,667
Pension costs	11,588		13,301
Other non-cash items	10,369		26,379
Changes in assets and liabilities:
Accounts receivable	(54,481)		69,764
Net contracts in progress and advance billings on contracts	(257,381)		88,602
Accounts payable	27,589		(25,870)
Accrued and other current liabilities	40,505		9,265
Pension liability and accrued postretirement and employee benefits	(42,067)		(146,916)
Other	24,907		(108,250)
Net Cash Provided By (Used In) Operating Activities-Continuing Operations	(71,776)		139,608
Cash Flows From Investing Activities:
Purchases of property, plant and equipment	(141,682)	[1]	(97,616)	[1]
(Increase) decrease in restricted cash and cash equivalents	39,950		(76,504)
Net decrease in available-for-sale securities	47,434		60,671
Other investing activities, net	303		2,985
Net Cash Used In Investing Activities-Continuing Operations	(53,995)		(110,464)
Cash Flows From Financing Activities:
Payment of debt	(4,288)		(4,317)
Debt issuance costs	(261)		(12,851)
Increase in debt	30,745
Dividend received from B&W			100,000
Other financing activities, net	(2,100)		290
Net Cash Provided By Financing Activities-Continuing Operations	24,096		83,122
Effects of exchange rate changes on cash and cash equivalents	107		20
Net increase (decrease) in cash and cash equivalents	(101,568)		112,286
Cash and cash equivalents at beginning of period	403,463		428,298
Cash and cash equivalents at end of period-Continuing Operations	301,895		540,584
Cash paid during the period for:
Income taxes (net of refunds)	25,534		33,037
Cash Flows From Discontinued Operations:
Net Cash Provided By (Used In) Operating Activities	604		(68,030)
Net Cash Used In Investing Activities			(62,126)
Net Cash Used In Financing Activities			(102,094)
Effects of exchange rate changes on cash	(62)		(1,752)
Net increase (decrease) in cash and cash equivalents	542		(234,002)
Cash and cash equivalents at beginning of period	1,426		470,972
Cash and cash equivalents at end of period-Discontinued Operations	$ 1,968		$ 236,970

[1] Total capital expenditures excludes $6.9 million and $10.5 million in accrued capital expenditures for the six months ended June 30, 2011 and 2010, respectively.

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2011

EARNINGS PER SHARE

NOTE 8 – EARNINGS PER SHARE

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

	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011		2010
	(Unaudited)
	(In thousands, except share and per share amounts)
Basic:
Income from continuing operations less noncontrolling interests	$	63,718	$	78,691		$	132,476	$	130,253
Income (loss) from discontinued operations, net of tax		3,610		(2,657	)		5,272		5,722
Net income attributable to McDermott International, Inc.	$	67,328	$	76,034		$	137,748	$	135,975
Weighted average common shares		234,573,031		231,847,145			234,207,053		231,335,723
Income from continuing operations less noncontrolling interests		0.27		0.34			0.57		0.56
Income (loss) from discontinued operations, net of tax		0.02		(0.01	)		0.02		0.02
Net income attributable to McDermott International, Inc.		0.29		0.33			0.59		0.59
Diluted:
Income from continuing operations less noncontrolling interests	$	63,718	$	78,691		$	132,476	$	130,253
Income (loss) from discontinued operations, net of tax		3,610		(2,657	)		5,272		5,722
Net income attributable to McDermott International, Inc.	$	67,328	$	76,034		$	137,748	$	135,975
Weighted average common shares (basic)		234,573,031		231,847,145			234,207,053		231,335,723
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units(1)		2,971,643		2,576,401			2,938,073		3,252,568
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards		237,544,674		234,423,546			237,145,126		234,588,291
Income from continuing operations less noncontrolling interests		0.27		0.34			0.56		0.56
Income (loss) from discontinued operations, net of tax		0.02		(0.01	)		0.02		0.02
Net income attributable to McDermott International, Inc.		0.28		0.32			0.58		0.58

⁽¹⁾  Approximately 422,000 and 417,000 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, 2011.

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Carrying Values of the Major Classes of Assets Held for Sale Included in Condensed Consolidated Balance Sheets (Detail) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets held for sale	$ 13,875	$ 10,161
Total long-term assets held for sale	78,110	77,150
Total assets held for sale	91,985	87,311
Charter Fleet Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	1,968	1,426
Accounts receivable - net	8,357	5,253
Other assets	3,550	3,482
Total current assets held for sale	13,875	10,161
Property, plant and equipment - net	69,401	68,595
Other assets	8,709	8,555
Total long-term assets held for sale	78,110	77,150
Total assets held for sale	91,985	87,311
Accounts payable and accrued liabilities	8,372	8,748
Other liabilities	14,540	12,154
Total liabilities associated with assets held for sale	$ 22,912	$ 20,902

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2011

Contracts Receivables

A summary of contract receivables is as follows:

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Contract receivables:
Contracts in progress	$	227,816		$	191,216
Completed contracts		121,787			85,587
Retainages		38,286			63,558
Unbilled		250			12,697
Less allowances		(30,897	)		(29,561	)
Accounts receivable—trade, net	$	357,242		$	323,497

Retainages on Contracts

The following amounts represent retainages on contracts:

	June 30, 2011		December 31, 2010
	(Unaudited)
	(In thousands)
Retainages expected to be collected within one year	$	38,286	$	63,558
Retainages expected to be collected after one year		95,305		83,143
Total retainages	$	133,591	$	146,701

Components of Accumulated Other Comprehensive Loss Included in Stockholders' Equity

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

	June 30, 2011			December 31, 2010
	(Unaudited)
	(In thousands)
Foreign currency translation adjustments	$	(2,857	)	$	(6,888	)
Net loss on investments		(3,674	)		(4,330	)
Net gain (loss) on derivative financial instruments		8,867			(855	)
Unrecognized losses on benefit obligations		(131,705	)		(151,644	)
Accumulated other comprehensive loss	$	(129,369	)	$	(163,717	)

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues	$ 849,801	$ 627,144	$ 1,749,041	$ 1,132,026
Costs and Expenses:
Cost of operations	703,805	475,839	1,451,030	855,045
Gain on asset disposals and impairments - net	(71)	(226)	(296)	(2,306)
Selling, general and administrative expenses	60,412	52,674	115,781	103,812
Total costs and expenses	764,146	528,287	1,566,515	956,551
Equity in Income (Loss) of Unconsolidated Affiliates	(1,876)	(715)	1,551	(4,146)
Operating Income	83,779	98,142	184,077	171,329
Other Income (Expense):
Interest income	292	335	741	825
Interest expense	(263)	(2,117)	(263)	(2,279)
Other income (expense) - net	1,255	722	(4,148)	(728)
Total other income (expense)	1,284	(1,060)	(3,670)	(2,182)
Income from continuing operations before provision for income taxes and noncontrolling interests	85,063	97,082	180,407	169,147
Provision for Income Taxes	17,237	12,905	39,816	25,144
Income from continuing operations before noncontrolling interests	67,826	84,177	140,591	144,003
Loss on disposal of discontinued operations		(66,218)		(90,420)
Income from discontinued operations, net of tax	3,610	63,561	5,272	96,142
Total Income (loss) from discontinued operations, net of tax	3,610	(2,657)	5,272	5,722
Net Income	71,436	81,520	145,863	149,725
Less: Net Income Attributable to Noncontrolling Interests	4,108	5,486	8,115	13,750
Net income attributable to McDermott International, Inc.	$ 67,328	$ 76,034	$ 137,748	$ 135,975
Basic:
Income from continuing operations, less noncontrolling interests	$ 0.27	$ 0.34	$ 0.57	$ 0.56
Income (loss) from discontinued operations, net of tax	$ 0.02	$ (0.01)	$ 0.02	$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.29	$ 0.33	$ 0.59	$ 0.59
Diluted:
Income from continuing operations, less noncontrolling interests	$ 0.27	$ 0.34	$ 0.56	$ 0.56
Income (loss) from discontinued operations, net of tax	$ 0.02	$ (0.01)	$ 0.02	$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.28	$ 0.32	$ 0.58	$ 0.58
Shares used in the computation of earnings per share (Note 8):
Basic	234,573,031	231,847,145	234,207,053	231,335,723
Diluted	237,544,674	234,423,546	237,145,126	234,588,291

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PENSION PLANS - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Investment strategy, fixed income percentage	85.00%
Investment strategy, equities percentage	15.00%
Expected rate of return on plan assets	6.50%	5.75%
Discount rate assumption	5.40%	5.30%

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Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Share data	3 Months Ended			6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010	Jun. 30, 2011		Jun. 30, 2010
Basic:
Income from continuing operations less noncontrolling interests	$ 63,718		$ 78,691	$ 132,476		$ 130,253
Income (loss) from discontinued operations, net of tax	3,610		(2,657)	5,272		5,722
Net income attributable to McDermott International, Inc.	67,328		76,034	137,748		135,975
Weighted average common shares	234,573,031		231,847,145	234,207,053		231,335,723
Income from continuing operations less noncontrolling interests	$ 0.27		$ 0.34	$ 0.57		$ 0.56
Income (loss) from discontinued operations, net of tax	$ 0.02		$ (0.01)	$ 0.02		$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.29		$ 0.33	$ 0.59		$ 0.59
Diluted:
Income from continuing operations less noncontrolling interests	63,718		78,691	132,476		130,253
Income (loss) from discontinued operations, net of tax	3,610		(2,657)	5,272		5,722
Net income attributable to McDermott International, Inc.	$ 67,328		$ 76,034	$ 137,748		$ 135,975
Weighted average common shares (basic)	234,573,031		231,847,145	234,207,053		231,335,723
Effect of dilutive securities:
Stock options, restricted stock and restricted stock units	2,971,643	[1]	2,576,401	2,938,073	[1]	3,252,568
Adjusted weighted average common shares and assumed exercises of stock options and vesting of stock awards	237,544,674		234,423,546	237,145,126		234,588,291
Income from continuing operations less noncontrolling interests	$ 0.27		$ 0.34	$ 0.56		$ 0.56
Income (loss) from discontinued operations, net of tax	$ 0.02		$ (0.01)	$ 0.02		$ 0.02
Net income attributable to McDermott International, Inc.	$ 0.28		$ 0.32	$ 0.58		$ 0.58

[1] Approximately 422,000 and 417,000 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, 2011.

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Total Stock-Based Compensation Expense (Detail) (USD $) In Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Jun. 30, 2011	Jun. 30, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation expense, net for tax	$ 4,909	$ 3,109	[1]	$ 10,524	$ 6,219	[1]
Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation expense, net for tax	1,062	439	[1]	1,870	745	[1]
Restricted Stock and Restricted Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation expense, net for tax	3,466	1,811	[1]	8,151	3,632	[1]
Performance Shares and Deferred Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation expense, net for tax	$ 381	$ 859	[1]	$ 503	$ 1,842	[1]

[1] Unrealized tax benefits for the three-month and six-month periods ended June 30, 2010 was $1.2 million and $2.6 million, respectively.

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Total Stock-Based Compensation Expense (Parenthetical) (Detail) (USD $) In Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2010	Jun. 30, 2010
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrealized tax benefits	$ 1.2	$ 2.6

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Components of Net Periodic Benefit Cost (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Domestic Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 180		$ 348
Interest cost	7,155	10,142	14,230	19,643
Expected return on plan assets	(7,550)	(10,205)	(14,075)	(19,765)
Recognized net actuarial loss and other	4,482	5,500	8,730	10,653
Curtailments	(8)		(8)
Net periodic benefit cost	4,079	5,617	8,877	10,879
Third Country National Employees Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	686	576	1,371	1,152
Interest cost	595	546	1,190	1,092
Expected return on plan assets	(613)	(457)	(1,226)	(914)
Amortization of prior service cost	4	546	8	1,092
Recognized net actuarial loss and other	684		1,368
Net periodic benefit cost	$ 1,356	$ 1,211	$ 2,711	$ 2,422