10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

þ	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended September 30, 2013

OR

¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from                      to

Commission File Number: 1-10945

____________________________________________

OCEANEERING INTERNATIONAL, INC.

(Exact name of registrant as specified in its charter)

Delaware	95-2628227
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
11911 FM 529 Houston, Texas	77041
(Address of principal executive offices)	(Zip Code)

(713) 329-4500

(Registrant's telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed from last report)

____________________________________________

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.   þ Yes   ¨  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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    þ  Yes   ¨  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 definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	þ	Accelerated filer	¨
Non-accelerated filer	¨	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    þ No

Number of shares of Common Stock outstanding as of October 18, 2013: 108,197,444

Oceaneering International, Inc.

Form 10-Q

Table of Contents

Part I	Financial Information
Item 1.	Financial Statements.
		Consolidated Balance Sheets
		Consolidated Statements of Income
		Consolidated Statements of Comprehensive Income
		Consolidated Statements of Cash Flows
		Notes to Consolidated Financial Statements
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations.
Item 3.	Quantitative and Qualitative Disclosures About Market Risk.
Item 4.	Controls and Procedures.
Part II	Other Information
Item 1.	Legal Proceedings.
Item 6.	Exhibits.
Signatures
Index to Exhibits

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PART I – FINANCIAL INFORMATION

Item 1. Financial Statements.

OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

	Sep 30, 2013			Dec 31, 2012
(in thousands, except share data)
	(unaudited)
ASSETS
Current Assets:
Cash and cash equivalents	$	102,349		$	120,549
Accounts receivable, net of allowances for doubtful accounts of $894 and $2,298	747,667			666,930
Inventory	446,017			331,280
Other current assets	95,371			84,231
Total Current Assets	1,391,404			1,202,990
Property and Equipment, at cost	2,277,772			2,069,119
Less accumulated depreciation	1,150,278			1,043,987
Net Property and Equipment	1,127,494			1,025,132
Other Assets:
Goodwill	347,127			363,193
Investments in unconsolidated affiliates	38,669			42,619
Other non-current assets	123,832			134,184
Total Other Assets	509,628			539,996
Total Assets	$	3,028,526		$	2,768,118
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
Accounts payable	$	152,297		$	130,489
Accrued liabilities	471,666			408,303
Income taxes payable	79,292			78,393
Total Current Liabilities	703,255			617,185
Long-term Debt	40,000			94,000
Other Long-term Liabilities	307,714			241,473
Commitments and Contingencies
Shareholders’ Equity:
Common Stock, par value $0.25 per share; 180,000,000 shares authorized; 110,834,088 shares issued	27,709			27,709
Additional paid-in capital	216,413			212,940
Treasury stock; 2,636,644 and 2,926,514 shares, at cost	(75,736		)	(84,062		)
Retained earnings	1,852,012			1,641,027
Accumulated other comprehensive income	(42,841		)	17,846
Total Shareholders' Equity	1,977,557			1,815,460
Total Liabilities and Shareholders' Equity	$	3,028,526		$	2,768,118

The accompanying Notes are an integral part of these Consolidated Financial Statements.

2

OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME

(unaudited)

		Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except per share data)		2013			2012			2013			2012
Revenue		$	853,297		$	734,217		$	2,392,221		$	2,001,655
Cost of services and products		647,805			563,348			1,824,490			1,546,325
	Gross Profit	205,492			170,869			567,731			455,330
Selling, general and administrative expense		51,756			47,056			159,368			145,483
Income from Operations		153,736			123,813			408,363			309,847
Interest income		39			824			472			1,362
Interest expense		(851		)	(1,282		)	(2,167		)	(3,083		)
Equity earnings (losses) of unconsolidated affiliates		134			418			109			1,341
Other income (expense), net		(639		)	(553		)	(840		)	(5,212		)
	Income before Income Taxes	152,419			123,220			405,937			304,255
Provision for income taxes		48,012			38,814			127,870			95,840
	Net Income	$	104,407		$	84,406		$	278,067		$	208,415
Cash Dividends declared per Share		$	0.22		$	0.18		$	0.62		$	0.51
Basic Earnings per Share		$	0.97		$	0.78		$	2.57		$	1.93
Diluted Earnings per Share		$	0.96		$	0.78		$	2.56		$	1.92

The accompanying Notes are an integral part of these Consolidated Financial Statements.

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OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(unaudited)
		Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)		2013		2012		2013			2012
Net Income		$	104,407	$	84,406	$	278,067		$	208,415
Other comprehensive income, net of tax:
	Foreign currency translation adjustments	17,506		40,417		(60,687		)	26,973
Total other comprehensive income		17,506		40,417		(60,687		)	26,973
Total Comprehensive Income		$	121,913	$	124,823	$	217,380		$	235,388

The accompanying Notes are an integral part of these Consolidated Financial Statements.

4

OCEANEERING INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

	Nine Months Ended September 30,
(in thousands)	2013			2012
Cash Flows from Operating Activities:
Net income	$	278,067		$	208,415
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	150,973			127,073
Deferred income tax provision	41,524			9,474
Net loss (gain) on sales of property and equipment	106			(597		)
Noncash compensation	14,546			12,414
Distributions from unconsolidated affiliates in excess of earnings	348			5,772
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	(80,736		)	(97,150		)
Inventory	(114,736		)	(71,735		)
Other operating assets	(18,380		)	(13,950		)
Currency translation effect on working capital	(11,028		)	2,957
Current liabilities	102,497			109,180
Other operating liabilities	1,743			(1,383		)
Total adjustments to net income	86,857			82,055
Net Cash Provided by Operating Activities	364,924			290,470
Cash Flows from Investing Activities:
Purchases of property and equipment	(268,579		)	(216,548		)
Business acquisitions, net of cash acquired	(11,855		)	(9,260		)
Distributions of capital from unconsolidated affiliates	3,602			—
Dispositions of property and equipment	11,470			3,806
Net Cash Used in Investing Activities	(265,362		)	(222,002		)
Cash Flows from Financing Activities:
Net payments of revolving credit facility, including loan costs	(53,804		)	(1,045		)
Excess tax benefits from stock-based compensation	3,124			4,523
Cash dividends	(67,082		)	(55,092		)
Purchases of treasury stock	—			(19,358		)
Net Cash Used in Financing Activities	(117,762		)	(70,972		)
Net Decrease in Cash and Cash Equivalents	(18,200		)	(2,504		)
Cash and Cash Equivalents—Beginning of Period	120,549			106,142
Cash and Cash Equivalents—End of Period	$	102,349		$	103,638

The accompanying Notes are an integral part of these Consolidated Financial Statements.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.    SUMMARY OF MAJOR ACCOUNTING POLICIES

Basis of Presentation. We have prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the Securities and Exchange Commission. These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position at September 30, 2013 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2012. The results for interim periods are not necessarily indicative of annual results.

Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering International, Inc. and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of the investment.

Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We do not generally require collateral from our customers.

Inventory. Inventory is valued at lower of cost or market. We determine cost using the weighted-average method.

Property and Equipment. We provide for depreciation of property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products.

We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized no interest in the nine-month periods endedSeptember 30, 2013 and 2012. We do not allocate general administrative costs to capital projects.

Business Acquisitions. We account for business combinations using the acquisition method of accounting, and we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values at the date of acquisition.

Goodwill and Intangible Assets. In our annual evaluation of goodwill for impairment, we first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, we determine it is more likely than not that the fair value of a reporting unit is no less than its carrying amount, performing the two-step impairment test is unnecessary. However, if we conclude otherwise, then we are required to perform the first step of the two-step impairment test. We tested the goodwill attributable to each of our reporting units for impairment as of December 31, 2012 and concluded that there was no impairment. The only changes in our reporting units' goodwill during the periods presented are from business acquisitions and currency exchange rate changes.

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Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives.

New Accounting Standards. In February 2013, the Financial Accounting Standards Board (FASB) issued an update to improve the reporting of amounts reclassified out of accumulated other comprehensive income. The update amends the presentation of changes in accumulated other comprehensive income and requires an entity to report the change of each component of other comprehensive income, including amounts reclassified out of accumulated comprehensive income into operating income, either on the face of the income statement or as a separate disclosure in the notes. We adopted this update on January 1, 2013, as required.

2.    SELECTED BALANCE SHEET INFORMATION

The following is information regarding selected balance sheet accounts:

(in thousands)		Sep 30, 2013		Dec 31, 2012
Inventory:
	Remotely operated vehicle parts and components	$	188,197	$	174,612
	Other, primarily raw materials	257,820		156,668
	Total	$	446,017	$	331,280
Investments in unconsolidated affiliates:
	Medusa Spar LLC	$	38,581	$	42,540
	Other	88		79
	Total	$	38,669	$	42,619

3.    DEBT

Long-term Debt consisted of the following:

(in thousands)	Sep 30, 2013		Dec 31, 2012
Revolving credit facility	$	40,000	$	94,000
Long-term Debt	$	40,000	$	94,000

We have a credit agreement with a group of banks (the "Credit Agreement"). The Credit Agreement provides for a five-year, $300 million revolving credit facility. Subject to certain conditions, the aggregate commitments under the facility may be increased by up to $200 million by obtaining additional commitments from existing and/or new lenders. Borrowings under the facility may be used for working capital and general corporate purposes. The facility is scheduled to expire on January 6, 2017. Revolving borrowings under the facility bear interest at an adjusted base rate or the Eurodollar Rate (as defined in the agreement), at our option, plus an applicable margin. Depending on our debt to capitalization ratio, the applicable margin varies: (1) in the case of adjusted base rate advances, from 0.125% to 0.750%; and (2) in the case of eurodollar advances, from 1.125% to 1.750%. The adjusted base rate is the greater of (1) the per annum rate established by the administrative agent as its prime rate, (2) the federal funds rate plus 0.50% and (3) the one-month Eurodollar Rate plus 1%.

The Credit Agreement contains various covenants that we believe are customary for agreements of this nature, including, but not limited to, restrictions on the ability of each of our restricted subsidiaries to incur unsecured debt, as well as restrictions on our ability and the ability of each of our restricted subsidiaries to incur secured debt, grant liens, make certain investments, make distributions, merge or consolidate, sell assets, enter into transactions with affiliates and enter into certain restrictive agreements. We are also subject to an interest coverage ratio and a debt to capitalization ratio. The Credit Agreement includes customary events and consequences of default.

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4.    COMMITMENTS AND CONTINGENCIES

Litigation. Various actions and claims are pending against us, most of which are covered by insurance. Although we cannot predict the ultimate outcome of these matters, we believe the ultimate liability, if any, that may result from these actions and claims will not materially affect our results of operations, cash flow or financial position.

Financial Instruments and Risk Concentration. In the normal course of business, we manage risks associated with foreign exchange rates and interest rates through a variety of strategies, including the use of hedging transactions. As a matter of policy, we do not use derivative instruments unless we have an underlying exposure. Other financial instruments that potentially subject us to concentrations of credit risk are principally cash and cash equivalents and accounts receivable.

In recent months, we have experienced delays in payment from OGX Petróleo e Gás S.A. ("OGX"), which is a customer in Brazil. The parent company of OGX recently missed making an interest payment on its bonds and, on October 30, 2013, OGX and its parent filed for a restructuring process under Brazilian law, which grants the filer judicial protection from creditors while a restructuring plan is developed for approval. As of September 30, 2013, we had accounts receivable due from OGX, which had not been paid by October 30, 2013, of approximately $4.5 million. At this time, we cannot predict the ultimate outcome of this situation and whether or to what extent we will collect our accounts receivable from OGX.

The carrying values of cash and cash equivalents approximate their fair values due to the short-term maturity of those instruments. Accounts receivable are generated from a broad group of customers, primarily from within the energy industry, which is our major source of revenue. Due to their short-term nature, carrying values of our accounts receivable and accounts payable approximate fair market values. We had $40 million and $94 million of borrowings at September 30, 2013 and December 31, 2012, respectively, under the Credit Agreement. Due to the short-term nature of the associated interest rate periods, the carrying value of our debt under the Credit Agreement approximates its fair value. Our debt is classified as Level 2 in the fair value hierarchy under U.S. GAAP (inputs other than quoted prices in active markets for similar assets and liabilities that are observable or can be corroborated by observable market data for substantially the full term for the assets or liabilities).

5.    EARNINGS PER SHARE, SHARE-BASED COMPENSATION AND SHARE REPURCHASE PLAN

Earnings Per Share. The table that follows presents our computation of weighted average basic and diluted shares outstanding, which we use in our earnings per share calculations. For each period presented, our net income allocable to both common shareholders and diluted common shareholders is the same as our net income in our consolidated statements of income.

	Three Months Ended September 30,		Nine Months Ended September 30,
(in thousands)	2013	2012	2013	2012
Basic shares outstanding	108,197	107,905	108,144	108,052
Effect of restricted stock units	586	595	559	585
Diluted shares outstanding	108,783	108,500	108,703	108,637

We had been paying a quarterly cash dividend of $0.18 per share to our common shareholders since the second quarter of 2012. In April 2013, our Board of Directors increased our dividend to $0.22 per share, commencing with the dividend we paid in June 2013. Our latest $0.22 per share quarterly dividend was declared in October 2013 and is payable in December 2013.

Share-Based Compensation. We have no outstanding stock options and no future share-based compensation to be recognized pursuant to stock option grants.

We grant restricted units of our common stock to certain of our key executives, key employees and Chairman of the Board. We also grant shares of restricted stock to our other non-employee directors. The restricted units granted to our key executives and key employees generally vest in full on the third anniversary of the award date, conditional on continued employment. The restricted unit grants, including those granted to our Chairman, can vest pro rata over three years, provided the individual meets certain age and years-of-service requirements. The shares of restricted common stock we grant to our other non-employee directors vest in full on the first anniversary of the

8

award date, conditional upon continued service as a director. Each grantee of shares of restricted stock is deemed to be the record owner of those shares during the restriction period, with the right to vote and receive any dividends on those shares. The restricted stock units outstanding have no voting or dividend rights.

For each of the restricted stock units granted in 2011 through 2013, at the earlier of three years after grant or at termination of employment or service, the grantee will be issued a share of our common stock for each common stock unit vested. As of September 30, 2013 and December 31, 2012, totals of 969,000 and 1,031,572 shares of restricted stock or restricted stock units were outstanding.

We estimate that stock-based compensation cost not yet recognized related to shares of restricted stock or restricted stock units, based on their grant-date fair values, was $19 million at September 30, 2013. This expense is being recognized on a staged-vesting basis over three years for awards attributable to individuals meeting certain age and years-of-service requirements, and on a straight-line basis over the applicable vesting period of one or three years for the other awards.

Share Repurchase Plan. In February 2010, our Board of Directors approved a plan to repurchase up to 12 million shares of our common stock. Under this plan, we had repurchased 3.1 million shares of our common stock for $86 million through December 31, 2012. We made no share repurchases during the nine months endedSeptember 30, 2013. We account for the shares we hold in treasury under the cost method, at average cost.

6.    INCOME TAXES

During interim periods, we provide for income taxes based on our current estimated annual effective tax rate using assumptions as to (1) earnings and other factors that would affect the tax provision for the remainder of the year and (2) the operations of foreign branches and subsidiaries that are subject to local income and withholding taxes. We conduct business through several foreign subsidiaries and, although we expect our consolidated operations to be profitable, there is no assurance that profits will be earned in entities or jurisdictions that have net operating loss carryforwards available. The primary difference between our effective tax rate of 31.5%in the nine-month periods endedSeptember 30, 2013 and 2012 and the federal statutory rate of 35% reflects our intention to indefinitely reinvest in certain of our international operations. Therefore, we do not provide for U.S. taxes on a portion of our foreign earnings.

We conduct our international operations in a number of locations that have varying laws and regulations with regard to income and other taxes, some of which are subject to interpretation. We recognize the benefit for a tax position if the benefit is more likely than not to be sustainable upon audit by the applicable taxing authority. If this threshold is met, the tax benefit is then measured and recognized at the largest amount that we believe is greater than 50% likely of being realized upon ultimate settlement. We do not believe that the total of unrecognized tax benefits will significantly increase or decrease in the next 12 months.

We account for any applicable interest and penalties on uncertain tax positions as a component of our provision for income taxes on our financial statements. Including associated foreign tax credits and penalties and interest, we have accrued a net total of $5.2 million in the caption "other long-term liabilities" on our balance sheet for unrecognized tax benefits at September 30, 2013. All additions or reductions to those liabilities would affect our effective income tax rate in the periods of change.

9

Our tax returns are subject to audit by taxing authorities in multiple jurisdictions. These audits often take years to complete and settle. The following lists the earliest tax years open to examination by tax authorities where we have significant operations:

Jurisdiction	Periods
United States	2010
United Kingdom	2009
Norway	2003
Angola	2007
Nigeria	2006
Brazil	2007
Australia	2009
Canada	2009

7.    BUSINESS SEGMENT INFORMATION

We are a global oilfield provider of engineered services and products, primarily to the offshore oil and gas industry, with a focus on deepwater applications. Through the use of our applied technology expertise, we also serve the defense and aerospace industries. Our Oil and Gas business consists of Remotely Operated Vehicles ("ROVs"), Subsea Products, Subsea Projects and Asset Integrity. Our ROV segment provides submersible vehicles operated from the surface to support offshore oil and gas exploration, development and production activities. Our Subsea Products segment supplies a variety of hardware and related services. Our Subsea Projects segment provides multiservice vessels, oilfield diving and support vessel operations, which are used primarily in inspection, maintenance and repair and installation activities. We also operate and maintain offshore and onshore oil and gas production facilities, provide subsea engineering services, and operate an offshore logistics supply base in Australia. Our Asset Integrity segment provides asset integrity management and assessment services and nondestructive testing and inspection. Our Advanced Technologies business provides project management, engineering services and equipment for applications in non-oilfield markets. Unallocated Expenses are those not associated with a specific business segment. These consist of expenses related to our incentive and deferred compensation plans, including restricted stock and bonuses, as well as other general expenses, including corporate administrative expenses.

There are no differences in the basis of segmentation or in the basis of measurement of segment profit or loss from those used in our consolidated financial statements for the year ended December 31, 2012.

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The table that follows presents Revenue and Income from Operations by business segment for each of the periods indicated.

	Three Months Ended									Nine Months Ended
(in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Revenue
Oil and Gas
Remotely Operated Vehicles	$	254,979		$	224,649		$	242,163		726,770			627,422
Subsea Products	263,671			215,617			258,016			735,692			579,481
Subsea Projects	143,132			101,719			118,195			349,782			264,843
Asset Integrity	118,657			113,588			124,740			358,246			320,704
Total Oil and Gas	780,439			655,573			743,114			2,170,490			1,792,450
Advanced Technologies	72,858			78,644			77,258			221,731			209,205
Total	$	853,297		$	734,217		$	820,372		$	2,392,221		$	2,001,655
Income from Operations
Oil and Gas
Remotely Operated Vehicles	$	74,710		$	66,724		$	69,219		$	209,764		$	187,825
Subsea Products	61,737			50,841			62,060			166,576			117,093
Subsea Projects	30,700			17,765			23,990			66,310			41,301
Asset Integrity	16,373			14,556			16,639			45,351			37,538
Total Oil and Gas	183,520			149,886			171,908			488,001			383,757
Advanced Technologies	6,400			5,393			10,165			25,241			15,547
Unallocated Expenses	(36,184		)	(31,466		)	(35,736		)	(104,879		)	(89,457		)
Total	$	153,736		$	123,813		$	146,337		$	408,363		$	309,847

We determine income from operations for each business segment before interest income or expense, other income (expense) and provision for income taxes. We do not consider an allocation of these items to be practical.

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

Certain forward-looking statements we make in this quarterly report on Form 10-Q are forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements include, without limitation, statements regarding our expectations about:

• fourth quarter of 2013 and the full years of 2013 and 2014 operating results and earnings per share, and the contributions from our segments to those results (including anticipated margin and utilization information);

• demand growth and business activity levels;

• our plans for future operations (including planned additions to our remotely operated vehicle ("ROV") fleet, our intent regarding the subsea support vessel scheduled for delivery in 2016, and other capital expenditures);

• our cash flows;

• the adequacy of our liquidity and capital resources;

• our expectations regarding shares repurchased under our share repurchase plan;

• our anticipated tax rates and underlying assumptions;

• seasonality; and

• industry conditions.

These forward-looking statements are subject to various risks, uncertainties and assumptions, including those we have referred to under the headings "Risk Factors" and "Cautionary Statement Concerning Forward-Looking Statements" in Part I of our annual report on Form 10-K for the year ended December 31, 2012. Although we believe that the expectations reflected in such forward-looking statements are reasonable, because of the inherent limitations in the forecasting process, as well as the relatively volatile nature of the industries in which we operate, we can give no assurance that those expectations will prove to have been correct. Accordingly, evaluation of our future prospects must be made with caution when relying on forward-looking information.

The following discussion should be read in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations" included in our annual report on Form 10-K for the year ended

December 31, 2012.

Executive Overview

We expect 2013 diluted earnings per share to be in the range of $3.35 to $3.40, as compared to our 2012 diluted earnings per share of $2.66, with continued global demand growth for our services and products to support deepwater drilling, field development, and inspection, maintenance and repair activities. We expect our 2014 diluted earnings per share to be in the range of $3.90 to $4.10. We believe our operating income will be higher in 2014 than 2013 for each of our Oil and Gas business operating segments, notably:

• ROVs on greater service demand to support drilling and vessel-based projects, led by increased activity offshore Africa;

• Subsea Products on higher demand for all our major product lines; and

• Subsea Projects on a growth in deepwater intervention service activity in the U.S. Gulf of Mexico and additional work offshore Angola.

We expect to place approximately 30 new ROVs into service in 2013, including the 17 we placed into service through September 30, 2013.

We forecast fourth quarter 2013 diluted earnings per share in the range of $0.80 to $0.85. For the fourth quarter in ROVs, we anticipate an operating income increase over that of the third quarter as we put new vehicles into service and a slight overall margin improvement. We expect lower operating income and margins than that of the third quarter from the rest of our operating segments.

We generate approximately 90% of our revenue and substantially all of our operating income before Unallocated Expenses from our services and products provided to the oil and gas industry, particularly in the deepwater sector of the offshore market. Consequently, the level of our customers' capital spending on deepwater exploration and development has a significant impact on the demand for many of our services and products.

12

Critical Accounting Policies and Estimates

For information about our Critical Accounting Policies and Estimates, please refer to the discussion in our annual report on Form 10-K for the year ended December 31, 2012 under the heading "Critical Accounting Policies and Estimates" in Item 7 - Management's Discussion and Analysis of Financial Condition and Results of Operation.

New Accounting Standards

For a discussion of new accounting standards applicable to us, see the discussion in Note 1 to the Consolidated Financial Statements contained in Item 1 of this quarterly report on Form 10-Q.

Liquidity and Capital Resources

We consider our liquidity and capital resources to be adequate to support our existing operations and capital commitments. At September 30, 2013, we had working capital of $688 million, including $102 million of cash and cash equivalents. Additionally, we had $260 million of borrowing capacity available under our revolving credit facility. We believe our cash provided from operating activities will exceed our capital expenditures and dividend payments in 2013.

Our capital expenditures were $280 million during the first nine months of 2013, as compared to $226 million during the corresponding period of last year. Of the $280 million, $178 million was invested in our ROV segment and $68 million was invested in our Subsea Products segment. We added 17 new ROVs to our fleet during the nine months ended September 30, 2013, retired three, and transferred one ROV to our Advanced Technologies segment, resulting in a total of 302 ROVs in our ROV segment fleet. We plan to add approximately 13 more new ROVs during the rest of 2013. Our capital expenditures in the nine months endedSeptember 30, 2012 included $149 million invested in our ROV segment. We estimate our capital expenditures for 2013 will be in the range of $400 million to $425 million, with approximately $225 million for upgrading and adding vehicles to our ROV fleet and $125 million for enhancing our Subsea Products capabilities.

We have chartered a deepwater vessel, the Ocean Intervention III, for a term that extends to February 2014, with annual extension options for up to three additional years. We expect to exercise our next option to extend the charter to February 2015. The Ocean Intervention III is working under our contract for field support vessel services offshore Angola. We have chartered the Bourbon Oceanteam 101 to February 2015, with annual extension options for up to two additional years, to work on the same contract. Each of these vessels has been outfitted with two of our high specification work-class ROVs.

We also chartered an additional deepwater vessel, the Olympic Intervention IV, for an initial five-year term to end in July 2013, with one two-year and three one-year extension options. We have exercised a one-year option to July 2014, and expect to exercise an option to extend to July 2015. We have outfitted this vessel with two of our high specification work-class ROVs, and we are using this vessel to perform subsea hardware installation and inspection, maintenance and repair projects in the U.S. Gulf of Mexico.

In October 2012, we entered into a five-year charter for the use of the Cade Candies, a Jones Act-compliant multiservice subsea support vessel. The charter commenced during March 2013. We have renamed the vessel Ocean Alliance and have outfitted the vessel with two of our high specification work-class ROVs. We are using this vessel in the U.S. Gulf of Mexico to perform subsea hardware installation and inspection, maintenance and repair projects.

During the third quarter of 2013, we signed an agreement with a shipyard for the construction of a subsea support vessel. We expect delivery of that vessel by the end of the first quarter of 2016. Our cash payments for the vessel will be spread over the construction period. We intend for the vessel to be U.S.- flagged and documented with a coastwise endorsement by the U.S. Coast Guard. It is expected to have an overall length of 353 feet, a Class 2 dynamic positioning system, accommodations for 110 personnel, a helideck, a 250 ton active heave-compensated crane, and a working moonpool. We expect to outfit the vessel with two of our high specification work-class ROVs. The vessel will also be equipped with a satellite communications system capable of transmitting streaming video for real-time work observation by shore personnel. We anticipate the vessel will be used to augment our ability to provide subsea intervention services in the ultra-deep waters of the U.S. Gulf of Mexico. These services are required to perform inspection, maintenance, and repair projects and hardware installations.

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At September 30, 2013, we had $40 million of long-term debt outstanding and $260 million available on our revolving credit facility provided under a credit agreement with a group of banks (the "Credit Agreement"). The Credit Agreement provides for a five-year, $300 million revolving credit facility, which is scheduled to expire in January 2017. Subject to certain conditions, the aggregate commitments under the facility may be increased by up to $200 million by obtaining additional commitments from existing and/or new lenders. Borrowings under the facility may be used for working capital and general corporate purposes. Revolving borrowings under the facility bear interest at an adjusted base rate or the Eurodollar Rate (as defined in the agreement), at our option, plus an applicable margin. Depending on our debt to capitalization ratio, the applicable margin varies: (1) in the case of adjusted base rate advances, from 0.125% to 0.750%; and (2) in the case of eurodollar advances, from 1.125% to 1.750%. The adjusted base rate is the greater of (1) the per annum rate established by the administrative agent as its prime rate, (2) the federal funds rate plus 0.50% and (3) the one-month Eurodollar Rate plus 1%.

The Credit Agreement contains various covenants that we believe are customary for agreements of this nature, including, but not limited to, restrictions on the ability of each of our restricted subsidiaries to incur unsecured debt, as well as restrictions on our ability and the ability of each of our restricted subsidiaries to incur secured debt, grant liens, make certain investments, make distributions, merge or consolidate, sell assets, enter into transactions with affiliates and enter into certain restrictive agreements. We are also subject to an interest coverage ratio and a debt to capitalization ratio. The Credit Agreement includes customary events and consequences of default.

Our principal source of cash from operating activities is our net income, adjusted for the non-cash effects of depreciation and amortization, deferred income taxes and noncash compensation under our share-based compensation plans. Our $365 million and $290 million of cash provided from operating activities in the nine-month periods endedSeptember 30, 2013 and 2012, respectively, were principally affected by cash increases (decreases) of:

• $(81) million and $(97) million, respectively, from changes in accounts receivable;

• $(115) million and $(72) million, respectively, from changes in inventory; and

• $102 million and $109 million, respectively, from changes in current liabilities.

The increases in accounts receivable and current liabilities reflect generally increasing business levels. The increases in inventory reflect our preparations to meet the requirements of our higher Subsea Products backlog and our increasing ROV fleet.

In the nine-month period endedSeptember 30, 2013, we used $265 million of cash in investing activities. The cash used in investing activities related to the capital expenditures described above. We also used $118 million in financing activities, which included the payment of cash dividends of $67 million and net payments of indebtedness under our revolving credit facility of $54 million. In the nine-month period endedSeptember 30, 2012, we used $222 million of cash in investing activities. The cash used in investing activities was used for the capital expenditures described above. In the nine-month period endedSeptember 30, 2012, we used $71 million of cash in financing activities, which included share repurchases of $19 million, net payments and new loan costs of $1 million related to our revolving credit facility and the payment of cash dividends of $55 million.

We have not guaranteed any debt not reflected on our consolidated balance sheet, and we do not have any off-balance sheet arrangements, as defined by SEC rules.

In February 2010, our Board of Directors approved a plan to repurchase up to 12 million shares of our common stock. Under this plan, we had repurchased 3.1 million shares of our common stock for $86 million through December 31, 2012. We made no share repurchases during the nine months endedSeptember 30, 2013. We account for the shares we hold in treasury under the cost method, at average cost. The timing and amount of any future repurchases will be determined by our management. We expect that any additional shares repurchased under the plan will be held as treasury stock for future use. The plan does not obligate us to repurchase any particular number of shares.

We had been paying a quarterly cash dividend of $0.18 per share to our common shareholders since the second quarter of 2012. In April 2013, our Board of Directors increased our dividend to $0.22 per share, commencing with the dividend we paid in June 2013. Our latest $0.22 per share quarterly dividend was declared in October 2013 and is payable in December 2013.

14

Results of Operations

We operate in five business segments. The segments are contained within two businesses — services and products provided to the oil and gas industry ("Oil and Gas") and all other services and products ("Advanced Technologies"). Our Unallocated Expenses are those not associated with a specific business segment.

Consolidated revenue and profitability information is as follows:

	Three Months Ended									Nine Months Ended
(dollars in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Jun 30, 2013			Jun 30, 2012
Revenue	$	853,297		$	734,217		$	820,372		$	2,392,221		$	2,001,655
Gross Profit	205,492			170,869			201,864			567,731			455,330
Gross Margin	24		%	23		%	25		%	24		%	23		%
Operating Income	153,736			123,813			146,337			408,363			309,847
Operating Margin	18		%	17		%	18		%	17		%	15		%

We generate a material amount of our consolidated revenue from contracts for services in the U.S. Gulf of Mexico in our Subsea Projects segment, which is usually more active from April through October, as compared to the rest of the year. The European operations of our Asset Integrity segment are also seasonally more active in the second and third quarters. Revenue in our ROV segment is subject to seasonal variations in demand, with our first quarter generally being the low quarter of the year. The level of our ROV seasonality primarily depends on the number of ROVs we have engaged in vessel-based subsea infrastructure inspection, maintenance, repair and installation, which is more seasonal than drilling support. Revenue in each of our Subsea Products and Advanced Technologies segments has generally not been seasonal.

15

Oil and Gas

The following table sets forth the revenues and margins for our Oil and Gas business segments for the periods indicated. In the ROV section of the table that follows, "Days available" includes all days from the first day that an ROV is placed into service until the ROV is retired. All days during this period are considered available days, including periods when an ROV is undergoing maintenance or repairs. Our ROVs do not have scheduled maintenance or repair that requires significant time when the ROVs are not available for utilization.

		Three Months Ended									Nine Months Ended
(dollars in thousands)		Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Remotely Operated Vehicles
	Revenue	$	254,979		$	224,649		$	242,163		$	726,770		$	627,422
	Gross Profit	85,193			76,524			80,180			241,527			217,093
	Operating Income	74,710			66,724			69,219			209,764			187,825
	Operating Margin	29		%	30		%	29		%	29		%	30		%
	Days available	27,567			26,198			26,884			80,666			75,626
	Days utilized	23,684			21,344			22,362			67,750			61,022
	Utilization	86		%	81		%	83		%	84		%	81		%
Subsea Products
	Revenue	263,671			215,617			258,016			735,692			579,481
	Gross Profit	80,896			67,651			82,389			225,630			169,044
	Operating Income	61,737			50,841			62,060			166,576			117,093
	Operating Margin	23		%	24		%	24		%	23		%	20		%
	Backlog at end of period	857,000			619,000			902,000			857,000			619,000
Subsea Projects
	Revenue	143,132			101,719			118,195			349,782			264,843
	Gross Profit	33,992			22,202			27,991			76,904			54,262
	Operating Income	30,700			17,765			23,990			66,310			41,301
	Operating Margin	21		%	17		%	20		%	19		%	16		%
Asset Integrity
	Revenue	118,657			113,588			124,740			358,246			320,704
	Gross Profit	22,094			20,457			23,529			64,662			56,635
	Operating Income	16,373			14,556			16,639			45,351			37,538
	Operating Margin	14		%	13		%	13		%	13		%	12		%
Total Oil and Gas
	Revenue	$	780,439		$	655,573		$	743,114		$	2,170,490		$	1,792,450
	Gross Profit	222,175			186,834			214,089			608,723			497,034
	Operating Income	183,520			149,886			171,908			488,001			383,757
	Operating Margin	24		%	23		%	23		%	22		%	21		%

In general, our Oil and Gas business focuses on supplying services and products to the deepwater sector of the offshore market. We are the world's largest provider of ROV services, and this business segment typically is the largest contributor to our Oil and Gas business operating income.

Our ROV segment revenue reflects the utilization percentages, fleet sizes and average pricing of the respective periods. Our operating income increased in the three-month period ended September 30, 2013 compared to the

16

corresponding period of the prior year from higher demand in most of our operating areas, most notably in the U.S. Gulf of Mexico and offshore Africa. Our ROV operating income increase over the immediately preceding quarter was principally attributable to increased demand for both drilling and vessel-based services, particularly in the U.S. Gulf of Mexico and offshore Africa. Our operating income increase for the nine months endedSeptember 30, 2013 compared to the corresponding period of the prior year was primarily due to higher demand, particularly in the U.S. Gulf of Mexico, Africa and Asia. We expect our full-year 2013 ROV operating income to exceed that of 2012, due to increases in fleet size and days on hire, led by higher demand in the U.S. Gulf of Mexico and offshore Africa. We expect to add approximately 30 ROVs in 2013, including the 17 we added in the first nine months. We retired three ROVs in the nine-month period endedSeptember 30, 2013, and we currently expect to retire, on average, 4% to 5% of our fleet on an annual basis. We also transferred one ROV to our Advanced Technologies segment. We anticipate our ROV operating margin percentage for the fourth quarter of 2013 will improve slightly over that of the third quarter. Compared to 2013, in 2014 we expect ROV operating income to increase on greater demand for both drilling and vessel-based services. In 2014, we anticipate adding 30 to 35 new ROVs to the fleet, having total fleet utilization of approximately 85%, and having a segment operating margin in the range of 29% to 30%.

Compared to the corresponding quarter of 2012, our Subsea Products operating income in the third quarter of 2013 improved on increased demand for tooling and subsea hardware. For the nine months ended September 30, 2013, our Subsea Products sales and operating income were higher than the corresponding period of 2012 from higher demand across our major product lines. Our Subsea Products backlog was $857 million at September 30, 2013 compared to $681 million at December 31, 2012, with the increase primarily from umbilical orders. We believe Subsea Products operating income will be higher in 2013 compared to 2012, and also in 2014 compared to 2013, from improved results in all our major product lines. We expect our 2014 operating margin for Subsea Products to be in the range of 19% to 21% .

In our Subsea Projects segment, a full period of activity under our field support vessel services contract offshore Angola, which began in the first quarter of 2012, was the primary source of the revenue and operating income increases for the nine-month period endedSeptember 30, 2013 over the corresponding period of 2012. Our revenue and operating income was higher in the quarter ended September 30, 2013 than both the immediately preceding quarter and the corresponding quarter of the prior year due to increased demand for deepwater intervention and shallow-water diving services in the U.S. Gulf of Mexico and additional vessel activity offshore Angola. We expect our Subsea Projects operating income in 2013 to be higher than that of 2012 largely due to a full year of operations under the field support vessel services contract offshore Angola. We expect higher Subsea Projects operating income in 2014 compared to 2013 on growth in deepwater intervention activity in the U.S. Gulf of Mexico and additional work offshore Angola, with a slight improvement in operating margin.

Our Asset Integrity operating income in the three-month period ended September 30, 2013 was comparable to the the immediately preceding quarter. Our Asset Integrity operating income for the third quarter was up slightly from the corresponding period of 2012 from higher service revenue in Africa. For the nine-month period endedSeptember 30, 2013, Asset Integrity revenue and operating income were higher compared to the corresponding period of the prior year from higher service demand in most geographic areas we operate. We expect our Asset Integrity operating income in 2013 to be higher than that of 2012 on increased service revenue and a slightly improved margin. In 2014, we expect Asset Integrity to generate higher operating income than 2013 on increased service revenue in most of the geographic areas in which we operate, with a slight improvement in operating margin.

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Advanced Technologies

Revenue and margin information was as follows:

	Three Months Ended									Nine Months Ended
(dollars in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Revenue	$	72,858		$	78,644		$	77,258		$	221,731		$	209,205
Gross Profit	11,170			9,753			14,945			39,423			28,402
Operating Income	6,400			5,393			10,165			25,241			15,547
Operating Margin	9		%	7		%	13		%	11		%	7		%

Advanced Technologies operating income in the three-month period endedSeptember 30, 2013 decreased from the immediately preceding quarter due to a lower level of activity and lower operating margin on theme park projects. Advanced Technologies operating income for the third quarter of 2013 was higher than that of the corresponding period of 2012 from additional vessel maintenance work for the U.S. Navy. The increase in operating income for the nine-month period endedSeptember 30, 2013 compared to the corresponding period of the prior year was due to increases in work and operational efficiency on entertainment theme park projects and an increase in and better execution of submarine maintenance and surface vessel repair work for the U.S. Navy. We expect our Advanced Technologies operating income in the fourth quarter of 2013 to decline steeply from the level of the third quarter, as work was accelerated on theme park projects during the nine months of 2013, which enabled us to earn completion incentive fees, and there is uncertainty of U.S. government funding for the services we provide to the U.S. Navy. For 2014, we expect Advanced Technologies operating income to approximate that of 2013.

Unallocated Expenses

Our Unallocated Expenses, i.e., those not associated with a specific business segment, within gross profit consist of expenses related to our incentive and deferred compensation plans, including restricted stock units, performance units and bonuses, as well as other general expenses. Our Unallocated Expenses within operating income consist of those expenses within gross profit plus general and administrative expenses related to corporate functions.

The following table sets forth our Unallocated Expenses for the periods indicated.

	Three Months Ended									Nine Months Ended
(dollars in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Gross profit expenses	$	27,853		$	25,718		$	27,170		$	80,415		$	70,106
Operating expenses	36,184			31,466			35,736			104,879			89,457
% of revenue	4		%	4		%	4		%	4		%	4		%

The increases in operating expenses in the three- and nine-month periods endedSeptember 30, 2013 compared to the corresponding period of the prior year were due to higher incentive compensation expenses. For 2014, we expect our unallocated expenses to increase at a slightly lower rate than our revenue growth.

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Other

The following table sets forth our significant financial statement items below the income from operations line.

	Three Months Ended									Nine Months Ended
(in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Interest income	$	39		$	824		$	243		$	472		$	1,362
Interest expense	(851		)	(1,282		)	(553		)	(2,167		)	(3,083		)
Equity earnings (losses) of unconsolidated affiliates	134			418			(186		)	109			1,341
Other income (expense), net	(639		)	(553		)	(1,591		)	(840		)	(5,212		)
Provision for income taxes	48,012			38,814			45,439			127,870			95,840

In addition to interest on borrowings, interest expense includes fees for lender commitments under our revolving credit agreement and fees for standby letters of credit and bank guarantees that banks issue on our behalf for performance bonds, bid bonds and self-insurance requirements.

Our equity earnings (losses) of unconsolidated affiliates consists of earnings (losses) from our 50% equity interest in Medusa Spar LLC, which owns a 75% interest in the Medusa Spar production platform in the U.S. Gulf of Mexico. Medusa Spar LLC earns revenue on a tariff basis on oil and gas production throughput processed by the platform from the Medusa field and other surrounding areas. We expect our equity earnings (losses) of unconsolidated affiliates to decrease in 2013 from that of 2012 due to production declines from the existing connected wells.

Other income (expense), net consisted principally of foreign currency transaction gains and losses for all periods presented. During the three-month period ended September 30, 2013 and the 2012 periods presented, foreign currency losses primarily related to Brazil, as the U.S. dollar strengthened relative to the Brazilian real.

The provisions for income taxes were related to U.S. income taxes that we provided at estimated annual effective rates using assumptions as to earnings and other factors that would affect the tax provision for the remainder of the year, and to the operations of foreign branches and subsidiaries that were subject to local income and withholding taxes. We anticipate our effective tax rate for 2013 will be 31.5%. The primary difference between our current 2013 estimated effective tax rate of 31.5% and the federal statutory tax rate of 35% reflects our intention to indefinitely reinvest in certain of our international operations. Therefore, we do not provide for U.S. taxes on a portion of our foreign earnings.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are currently exposed to certain market risks arising from transactions we have entered into in the normal course of business. These risks relate to interest rate changes and fluctuations in foreign exchange rates. We do not believe these risks are material. We have not entered into any market risk sensitive instruments for speculative or trading purposes. We currently have no outstanding hedges or similar instruments. When we have a significant amount of borrowings, we typically manage our exposure to interest rate changes through the use of a combination of fixed- and floating-rate debt. See Note 3 of Notes to Consolidated Financial Statements included in this report for a description of our revolving credit facility and interest rates on our borrowings. We believe significant interest rate changes would not have a material near-term impact on our future earnings or cash flows.

In recent months, we have experienced delays in payment from OGX Petróleo e Gás S.A. ("OGX"), which is a customer in Brazil. The parent company of OGX recently missed making an interest payment on its bonds and, on October 30, 2013, OGX and its parent filed for a restructuring process under Brazilian law, which grants the filer judicial protection from creditors while a restructuring plan is developed for approval. As of September 30, 2013, we had accounts receivable due from OGX, which had not been paid by October 30, 2013, of approximately $4.5 million. At this time, we cannot predict the ultimate outcome of this situation and whether or to what extent we will collect our accounts receivable from OGX.

Because we operate in various oil and gas exploration and production regions in the world, we conduct a portion of our business in currencies other than the U.S. dollar. The functional currency for several of our international operations is the applicable local currency. A stronger U.S. dollar against the U.K. pound sterling, the Norwegian kroner and the Brazilian real may result in lower operating income. We manage our exposure to changes in foreign exchange rates principally through arranging compensation in U.S. dollars or freely convertible currency and, to the extent possible, by limiting compensation received in other currencies to amounts necessary to meet obligations denominated in those currencies. We use the exchange rates in effect as of the balance sheet date to translate assets and liabilities as to which the functional currency is the local currency, resulting in translation adjustments that we reflect as accumulated other comprehensive income or loss in the shareholders' equity section of our Consolidated Balance Sheets. We recorded adjustments of $(61) million and $27 million to our equity accounts for the nine months ended September 30, 2013, and 2012, respectively. Negative adjustments reflect the net impact of the strengthening of the U.S. dollar against various foreign currencies for locations where the functional currency is not the U.S. dollar. Conversely, positive adjustments reflect the effect of a weakening dollar.

We recorded foreign currency transaction losses of $0.4 million and $0.6 million in the three- and nine-month periods endedSeptember 30, 2013 and $0.7 million and $4.9 million three- and nine-month periods endedSeptember 30, 2012, respectively, that are included in Other income (expense), net in our Consolidated Income Statements.

Item 4. Controls and Procedures.

In accordance with Rules 13a-15 and 15d-15 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we carried out an evaluation, under the supervision and with the participation of management, including our principal executive officer and principal financial officer, of the effectiveness of our disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based on that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of September 30, 2013 to provide reasonable assurance that information required to be disclosed in our reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms.

There has been no change in our internal control over financial reporting that occurred during the three months ended September 30, 2013 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

Various actions and claims are pending against us, most of which are covered by insurance. Although we cannot predict the ultimate outcome of these matters, we believe the ultimate liability, if any, that may result from these actions and claims will not materially affect our results of operations, cash flow or financial position.

Item 6.        Exhibits.

			Registration or File Number	Form of Report	Report Date	Exhibit Number
3.01	*	Restated Certificate of Incorporation	1-10945	10-K	Dec. 2000	3.01
3.02	*	Certificate of Amendment to Restated Certificate of Incorporation	1-10945	8-K	May 2008	3.1
3.03	*	Amended and Restated Bylaws	1-10945	8-K	Dec. 2007	3.1
31.01		Rule 13a – 14(a)/15d – 14(a) certification of principal executive officer
31.02		Rule 13a – 14(a)/15d – 14(a) certification of principal financial officer
32.01		Section 1350 certification of principal executive officer
32.02		Section 1350 certification of principal financial officer
101.INS		XBRL Instance Document
101.SCH		XBRL Taxonomy Extension Schema Document
101.CAL		XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF		XBRL Taxonomy Extension Definition Linkbase Document
101.LAB		XBRL Taxonomy Extension Label Linkbase Document
101.PRE		XBRL Taxonomy Extension Presentation Linkbase Document
*		Exhibit previously filed with the Securities and Exchange Commission, as indicated, and incorporated herein by reference.
+		Management contract or compensatory plan or arrangement.

21

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.

October 31, 2013	/S/    M. KEVIN MCEVOY
Date	M. Kevin McEvoy
	Chief Executive Officer and Director
	(Principal Executive Officer)
October 31, 2013	/S/    MARVIN J. MIGURA
Date	Marvin J. Migura
	Executive Vice President
	(Principal Financial Officer)
October 31, 2013	/S/    W. CARDON GERNER
Date	W. Cardon Gerner
	Senior Vice President and Chief Financial Officer
	(Principal Accounting Officer)

22

Index to Exhibits

			Registration or File Number	Form of Report	Report Date	Exhibit Number
3.01	*	Restated Certificate of Incorporation	1-10945	10-K	Dec. 2000	3.01
3.02	*	Certificate of Amendment to Restated Certificate of Incorporation	1-10945	8-K	May 2008	3.1
3.03	*	Amended and Restated Bylaws	1-10945	8-K	Dec. 2007	3.1
31.01		Rule 13a – 14(a)/15d – 14(a) certification of principal executive officer
31.02		Rule 13a – 14(a)/15d – 14(a) certification of principal financial officer
32.01		Section 1350 certification of principal executive officer
32.02		Section 1350 certification of principal financial officer
101.INS		XBRL Instance Document
101.SCH		XBRL Taxonomy Extension Schema Document
101.CAL		XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF		XBRL Taxonomy Extension Definition Linkbase Document
101.LAB		XBRL Taxonomy Extension Label Linkbase Document
101.PRE		XBRL Taxonomy Extension Presentation Linkbase Document
*		Exhibit previously filed with the Securities and Exchange Commission, as indicated, and incorporated herein by reference.
+		Management contract or compensatory plan or arrangement.

EX-31.01

Exhibit 31.01

CERTIFICATION

I, M. Kevin McEvoy, principal executive officer of Oceaneering International, Inc., certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of Oceaneering International, Inc.;

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 (the registrant's fourth quarter in the case of an annual report) 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.

October 31, 2013	/S/    M. KEVIN MCEVOY
Date	M. Kevin McEvoy
	Chief Executive Officer and Director
	(Principal Executive Officer)

EX-31.02

Exhibit 31.02

CERTIFICATION

I, Marvin J. Migura. principal financial officer of Oceaneering International, Inc., certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of Oceaneering International, Inc.;

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 (the registrant's fourth quarter in the case of an annual report) 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.

October 31, 2013	/S/    MARVIN J. MIGURA
Date	Marvin J. Migura
	Executive Vice President
	(Principal Financial Officer)

EX-32.01

Exhibit 32.01

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Oceaneering International, Inc. ("Oceaneering") on Form 10-Q for the quarter ended September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, M. Kevin McEvoy, principal executive officer, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Oceaneering.

October 31, 2013	/S/    M. KEVIN MCEVOY
Date	M. Kevin McEvoy
	Chief Executive Officer and Director
	(Principal Executive Officer)

EX-32.02

Exhibit 32.02

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Oceaneering International, Inc. ("Oceaneering") on Form 10-Q for the quarter ended September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Marvin J. Migura, principal financial officer, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Oceaneering.

October 31, 2013	/S/    MARVIN J. MIGURA
Date	Marvin J. Migura
	Executive Vice President
	(Principal Financial Officer)

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Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan (Tables)

9 Months Ended

Sep. 30, 2013

Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Abstract]

Schedule of Earnings Per Share

Earnings Per Share. The table that follows presents our computation of weighted average basic and diluted shares outstanding, which we use in our earnings per share calculations. For each period presented, our net income allocable to both common shareholders and diluted common shareholders is the same as our net income in our consolidated statements of income.

	Three Months Ended September 30,		Nine Months Ended September 30,
(in thousands)	2013	2012	2013	2012
Basic shares outstanding	108,197	107,905	108,144	108,052
Effect of restricted stock units	586	595	559	585
Diluted shares outstanding	108,783	108,500	108,703	108,637

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Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue	$ 853,297	$ 734,217	$ 2,392,221	$ 2,001,655
Cost of services and products	647,805	563,348	1,824,490	1,546,325
Gross Profit	205,492	170,869	567,731	455,330
Selling, general and administrative expense	51,756	47,056	159,368	145,483
Income from Operations	153,736	123,813	408,363	309,847
Interest income	39	824	472	1,362
Interest expense	(851)	(1,282)	(2,167)	(3,083)
Equity earnings (losses) of unconsolidated affiliates	134	418	109	1,341
Other income (expense), net	(639)	(553)	(840)	(5,212)
Income before Income Taxes	152,419	123,220	405,937	304,255
Provision for income taxes	48,012	38,814	127,870	95,840
Net Income	$ 104,407	$ 84,406	$ 278,067	$ 208,415
Cash Dividends declared per Share	$ 0.22	$ 0.18	$ 0.62	$ 0.51
Basic Earnings per Share	$ 0.97	$ 0.78	$ 2.57	$ 1.93
Diluted Earnings per Share	$ 0.96	$ 0.78	$ 2.56	$ 1.92

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Commitments And Contingencies

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

COMMITMENTS AND CONTINGENCIES

Litigation. Various actions and claims are pending against us, most of which are covered by insurance. Although we cannot predict the ultimate outcome of these matters, we believe the ultimate liability, if any, that may result from these actions and claims will not materially affect our results of operations, cash flow or financial position.

Financial Instruments and Risk Concentration. In the normal course of business, we manage risks associated with foreign exchange rates and interest rates through a variety of strategies, including the use of hedging transactions. As a matter of policy, we do not use derivative instruments unless we have an underlying exposure. Other financial instruments that potentially subject us to concentrations of credit risk are principally cash and cash equivalents and accounts receivable.

In recent months, we have experienced delays in payment from OGX Petróleo e Gás S.A. ("OGX"), which is a customer in Brazil. The parent company of OGX recently missed making an interest payment on its bonds and, on October 30, 2013, OGX and its parent filed for a restructuring process under Brazilian law, which grants the filer judicial protection from creditors while a restructuring plan is developed for approval. As of September 30, 2013, we had accounts receivable due from OGX, which had not been paid by October 30, 2013, of approximately $4.5 million. At this time, we cannot predict the ultimate outcome of this situation and whether or to what extent we will collect our accounts receivable from OGX.

The carrying values of cash and cash equivalents approximate their fair values due to the short-term maturity of those instruments. Accounts receivable are generated from a broad group of customers, primarily from within the energy industry, which is our major source of revenue. Due to their short-term nature, carrying values of our accounts receivable and accounts payable approximate fair market values. We had $40 million and $94 million of borrowings at September 30, 2013 and December 31, 2012, respectively, under the Credit Agreement. Due to the short-term nature of the associated interest rate periods, the carrying value of our debt under the Credit Agreement approximates its fair value. Our debt is classified as Level 2 in the fair value hierarchy under U.S. GAAP (inputs other than quoted prices in active markets for similar assets and liabilities that are observable or can be corroborated by observable market data for substantially the full term for the assets or liabilities).

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Debt - Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]
Revolving credit facility	$ 40,000	$ 94,000
Long-term Debt		$ 94,000

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Income Taxes (Tables)

9 Months Ended

Sep. 30, 2013

Income Tax Expense (Benefit) [Abstract]

Summary of Income Tax Examinations

The following lists the earliest tax years open to examination by tax authorities where we have significant operations:

Jurisdiction	Periods
United States	2010
United Kingdom	2009
Norway	2003
Angola	2007
Nigeria	2006
Brazil	2007
Australia	2009
Canada	2009

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Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended										6 Months Ended	9 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Feb. 28, 2010
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Cash dividend per share	$ 0.22	$ 0.22	$ 0.22	$ 0.18	$ 0.18	$ 0.18	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.18
Common Stock, Dividends, Per Share, Declared		$ 0.22			$ 0.18							$ 0.62	$ 0.51
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		969,000		1,031,572								969,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased														12,000,000
Stock Repurchase Program, Total Number of Shares Repurchased To Date				3,100,000
Stock Repurchase Program, Total Shares Repurchased To Date, Amount				$ 86
Stock Repurchased During Period, Shares												0
Restricted Stock Units (RSUs) [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options		$ 19										$ 19
Restricted Stock Units (RSUs) [Member] | Minimum [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period												1 year
Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period												3 years

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Commitments And Contingencies - Narrative (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Oct. 30, 2013 Brazil [Member] Collectibility of Receivables [Member]
Loss Contingencies [Line Items]
Accounts Receivable, Gross, Current			$ 4,500,000
Long-term Debt, Excluding Current Maturities	$ 40,000,000	$ 94,000,000

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Business Segment Information - Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Cost of Goods and Services Sold	$ 647,805	$ 563,348	$ 1,824,490	$ 1,546,325

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Debt - Line of Credit (Details) (Credit Agreement 2012 [Member], USD $) In Millions, unless otherwise specified	Jan. 06, 2012
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 300
Line of Credit Facility, Available Additional Borrowing Capacity	$ 200
Adjusted Base Rate Advances [Member] | Adjusted Base Rate [Member] | Federal Funds Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate	0.50%
Adjusted Base Rate Advances [Member] | Adjusted Base Rate [Member] | Eurodollar Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate	1.00%
Adjusted Base Rate Advances [Member] | Applicable Margin [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate	0.125%
Adjusted Base Rate Advances [Member] | Applicable Margin [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate	0.75%
Eurodollar Advances [Member] | Applicable Margin [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate	1.125%
Eurodollar Advances [Member] | Applicable Margin [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Basis Spread on Variable Rate	1.75%

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Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities:
Net Income	$ 278,067	$ 208,415
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	150,973	127,073
Deferred income tax provision (benefit)	41,524	9,474
Gain on sales of property and equipment	106	(597)
Noncash compensation	14,546	12,414
Distributions from unconsolidated affiliates in excess of earnings	348	5,772
Excluding the effects of acquisitions, increase (decrease) in cash from:
Accounts receivable	(80,736)	(97,150)
Inventory	(114,736)	(71,735)
Other operating assets	(18,380)	(13,950)
Currency translation effect on working capital	(11,028)	2,957
Current liabilities	102,497	109,180
Other operating liabilities	1,743	(1,383)
Total adjustments to net income	86,857	82,055
Net Cash Provided by Operating Activities	364,924	290,470
Cash Flows from Investing Activities:
Purchases of property and equipment	(268,579)	(216,548)
Business acquisitions, net of cash acquired	(11,855)	(9,260)
Distributions of capital from unconsolidated affiliates	3,602	0
Dispositions of property and equipment	11,470	3,806
Net Cash Used in Investing Activities	(265,362)	(222,002)
Cash Flows from Financing Activities:
Net payments of revolving credit facility, including loan costs	(53,804)	(1,045)
Excess tax benefits from stock-based compensation	3,124	4,523
Cash dividends	(67,082)	(55,092)
Purchases of treasury stock	0	(19,358)
Net Cash Used in Financing Activities	(117,762)	(70,972)
Net Decrease in Cash and Cash Equivalents	(18,200)	(2,504)
Cash and Cash Equivalents-Beginning of Period	120,549	106,142
Cash and Cash Equivalents-End of Period	$ 102,349	$ 103,638

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Selected Balance Sheet Information

9 Months Ended

Sep. 30, 2013

Selected Balance Sheet Information [Abstract]

Selected Balance Sheet Information

SELECTED BALANCE SHEET INFORMATION

The following is information regarding selected balance sheet accounts:

(in thousands)		Sep 30, 2013		Dec 31, 2012
Inventory:
	Remotely operated vehicle parts and components	$	188,197	$	174,612
	Other, primarily raw materials	257,820		156,668
	Total	$	446,017	$	331,280
Investments in unconsolidated affiliates:
	Medusa Spar LLC	$	38,581	$	42,540
	Other	88		79
	Total	$	38,669	$	42,619

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Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan

9 Months Ended

Sep. 30, 2013

Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Abstract]

Shareholders' Equity, Earnings Per Share And Stock-Based Compensation

Earnings Per Share. The table that follows presents our computation of weighted average basic and diluted shares outstanding, which we use in our earnings per share calculations. For each period presented, our net income allocable to both common shareholders and diluted common shareholders is the same as our net income in our consolidated statements of income.

	Three Months Ended September 30,		Nine Months Ended September 30,
(in thousands)	2013	2012	2013	2012
Basic shares outstanding	108,197	107,905	108,144	108,052
Effect of restricted stock units	586	595	559	585
Diluted shares outstanding	108,783	108,500	108,703	108,637

We had been paying a quarterly cash dividend of $0.18 per share to our common shareholders since the second quarter of 2012. In April 2013, our Board of Directors increased our dividend to $0.22 per share, commencing with the dividend we paid in June 2013. Our latest $0.22 per share quarterly dividend was declared in October 2013 and is payable in December 2013.

Share-Based Compensation. We have no outstanding stock options and no future share-based compensation to be recognized pursuant to stock option grants.

We grant restricted units of our common stock to certain of our key executives, key employees and Chairman of the Board. We also grant shares of restricted stock to our other non-employee directors. The restricted units granted to our key executives and key employees generally vest in full on the third anniversary of the award date, conditional on continued employment. The restricted unit grants, including those granted to our Chairman, can vest pro rata over three years, provided the individual meets certain age and years-of-service requirements. The shares of restricted common stock we grant to our other non-employee directors vest in full on the first anniversary of the award date, conditional upon continued service as a director. Each grantee of shares of restricted stock is deemed to be the record owner of those shares during the restriction period, with the right to vote and receive any dividends on those shares. The restricted stock units outstanding have no voting or dividend rights.

For each of the restricted stock units granted in 2011 through 2013, at the earlier of three years after grant or at termination of employment or service, the grantee will be issued a share of our common stock for each common stock unit vested. As of September 30, 2013 and December 31, 2012, totals of 969,000 and 1,031,572 shares of restricted stock or restricted stock units were outstanding.

We estimate that stock-based compensation cost not yet recognized related to shares of restricted stock or restricted stock units, based on their grant-date fair values, was $19 million at September 30, 2013. This expense is being recognized on a staged-vesting basis over three years for awards attributable to individuals meeting certain age and years-of-service requirements, and on a straight-line basis over the applicable vesting period of one or three years for the other awards.

Share Repurchase Plan. In February 2010, our Board of Directors approved a plan to repurchase up to 12 million shares of our common stock. Under this plan, we had repurchased 3.1 million shares of our common stock for $86 million through December 31, 2012. We made no share repurchases during the nine months endedSeptember 30, 2013. We account for the shares we hold in treasury under the cost method, at average cost.

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Debt

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Debt

DEBT

Long-term Debt consisted of the following:

(in thousands)	Sep 30, 2013		Dec 31, 2012
Revolving credit facility	$	40,000	$	94,000
Long-term Debt	$	40,000	$	94,000

We have a credit agreement with a group of banks (the "Credit Agreement"). The Credit Agreement provides for a five-year, $300 million revolving credit facility. Subject to certain conditions, the aggregate commitments under the facility may be increased by up to $200 million by obtaining additional commitments from existing and/or new lenders. Borrowings under the facility may be used for working capital and general corporate purposes. The facility is scheduled to expire on January 6, 2017. Revolving borrowings under the facility bear interest at an adjusted base rate or the Eurodollar Rate (as defined in the agreement), at our option, plus an applicable margin. Depending on our debt to capitalization ratio, the applicable margin varies: (1) in the case of adjusted base rate advances, from 0.125% to 0.750%; and (2) in the case of eurodollar advances, from 1.125% to 1.750%. The adjusted base rate is the greater of (1) the per annum rate established by the administrative agent as its prime rate, (2) the federal funds rate plus 0.50% and (3) the one-month Eurodollar Rate plus 1%.

The Credit Agreement contains various covenants that we believe are customary for agreements of this nature, including, but not limited to, restrictions on the ability of each of our restricted subsidiaries to incur unsecured debt, as well as restrictions on our ability and the ability of each of our restricted subsidiaries to incur secured debt, grant liens, make certain investments, make distributions, merge or consolidate, sell assets, enter into transactions with affiliates and enter into certain restrictive agreements. We are also subject to an interest coverage ratio and a debt to capitalization ratio. The Credit Agreement includes customary events and consequences of default.

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Earnings Per Share, Stock-Based Compensation and Share Repurchase Plan (Earnings Per Share) (Details) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Shareholders' Equity, Earnings Per Share And Stock-Based Compensation [Abstract]
Basic shares outstanding	108,197	107,905	108,144	108,052
Effect of restricted stock units	586	595	559	585
Diluted shares outstanding	108,783	108,500	108,703	108,637

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Business Segment Information - Financial Data By Business Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Revenue	$ 853,297	$ 820,372	$ 734,217	$ 2,392,221	$ 2,001,655
Income from Operations	153,736	146,337	123,813	408,363	309,847
Oil And Gas [Member]
Segment Reporting Information [Line Items]
Revenue	780,439	743,114	655,573	2,170,490	1,792,450
Income from Operations	183,520	171,908	149,886	488,001	383,757
ROVs [Member]
Segment Reporting Information [Line Items]
Revenue	254,979	242,163	224,649	726,770	627,422
Income from Operations	74,710	69,219	66,724	209,764	187,825
Subsea Products [Member]
Segment Reporting Information [Line Items]
Revenue	263,671	258,016	215,617	735,692	579,481
Income from Operations	61,737	62,060	50,841	166,576	117,093
Subsea Projects [Member]
Segment Reporting Information [Line Items]
Revenue	143,132	118,195	101,719	349,782	264,843
Income from Operations	30,700	23,990	17,765	66,310	41,301
Asset Integrity [Member]
Segment Reporting Information [Line Items]
Revenue	118,657	124,740	113,588	358,246	320,704
Income from Operations	16,373	16,639	14,556	45,351	37,538
Advanced Technologies [Member]
Segment Reporting Information [Line Items]
Revenue	72,858	77,258	78,644	221,731	209,205
Income from Operations	6,400	10,165	5,393	25,241	15,547
Unallocated Expenses [Member]
Segment Reporting Information [Line Items]
Income from Operations	$ (36,184)	$ (35,736)	$ (31,466)	$ (104,879)	$ (89,457)

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Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts receivable, allowances for doubtful accounts	$ 894	$ 2,298
Common Stock, par value	$ 0.25	$ 0.25
Common Stock, shares authorized	180,000,000	180,000,000
Common Stock, shares issued	110,834,088	110,834,088
Treasury stock, shares	2,636,644	2,926,514

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Summary Of Major Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation. We have prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the Securities and Exchange Commission. These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position at September 30, 2013 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2012. The results for interim periods are not necessarily indicative of annual results.

Principles of Consolidation

Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering International, Inc. and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. All significant intercompany accounts and transactions have been eliminated.

Use Of Estimates

Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of the investment.

Accounts Receivable

Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We do not generally require collateral from our customers.

Inventory

Inventory. Inventory is valued at lower of cost or market. We determine cost using the weighted-average method.

Property and Equipment

Property and Equipment. We provide for depreciation of property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products.

We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized no interest in the nine-month periods endedSeptember 30, 2013 and 2012. We do not allocate general administrative costs to capital projects.

Business Acquisitions

Business Acquisitions. We account for business combinations using the acquisition method of accounting, and we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values at the date of acquisition.

Goodwill and Intangible Assets

Goodwill and Intangible Assets. In our annual evaluation of goodwill for impairment, we first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, we determine it is more likely than not that the fair value of a reporting unit is no less than its carrying amount, performing the two-step impairment test is unnecessary. However, if we conclude otherwise, then we are required to perform the first step of the two-step impairment test. We tested the goodwill attributable to each of our reporting units for impairment as of December 31, 2012 and concluded that there was no impairment. The only changes in our reporting units' goodwill during the periods presented are from business acquisitions and currency exchange rate changes.

Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives.

New Accounting Standards

New Accounting Standards. In February 2013, the Financial Accounting Standards Board (FASB) issued an update to improve the reporting of amounts reclassified out of accumulated other comprehensive income. The update amends the presentation of changes in accumulated other comprehensive income and requires an entity to report the change of each component of other comprehensive income, including amounts reclassified out of accumulated comprehensive income into operating income, either on the face of the income statement or as a separate disclosure in the notes. We adopted this update on January 1, 2013, as required.

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income	$ 104,407	$ 84,406	$ 278,067	$ 208,415
Other comprehensive income, net of tax:
Foreign currency translation adjustments	17,506	40,417	(60,687)	26,973
Total other comprehensive income	17,506	40,417	(60,687)	26,973
Total Comprehensive Income	$ 121,913	$ 124,823	$ 217,380	$ 235,388

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 102,349	$ 120,549
Accounts receivable, net of allowances for doubtful accounts	747,667	666,930
Inventory	446,017	331,280
Other current assets	95,371	84,231
Total Current Assets	1,391,404	1,202,990
Property and Equipment, at cost	2,277,772	2,069,119
Less accumulated depreciation	1,150,278	1,043,987
Net Property and Equipment	1,127,494	1,025,132
Other Assets:
Goodwill	347,127	363,193
Investments in unconsolidated affiliates	38,669	42,619
Other non-current assets	123,832	134,184
Total Other Assets	509,628	539,996
Total Assets	3,028,526	2,768,118
Current Liabilities:
Accounts payable	152,297	130,489
Accrued liabilities	471,666	408,303
Income taxes payable	79,292	78,393
Total Current Liabilities	703,255	617,185
Long-term Debt	40,000	94,000
Other Long-term Liabilities	307,714	241,473
Commitments and Contingencies
Stockholders' Equity:
Common Stock	27,709	27,709
Additional paid-in capital	216,413	212,940
Treasury stock, at cost	(75,736)	(84,062)
Retained earnings	1,852,012	1,641,027
Accumulated other comprehensive income	(42,841)	17,846
Total Shareholders' Equity	1,977,557	1,815,460
Total Liabilities and Sharesholders' Equity	$ 3,028,526	$ 2,768,118

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Income Taxes - Narrative (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Loss Carryforwards [Line Items]
Cost of Goods and Services Sold	$ 647,805,000	$ 563,348,000	$ 1,824,490,000	$ 1,546,325,000
Effective income tax rate continuing operations			31.50%	31.50%
Federal statutory tax rate			35.00%
Unrecognized Tax Benefits, Probability Threshold of Realizing for Tax Benefits Recognition, Minimum Percentage			50.00%
Unrecognized Tax Benefits, Including Foreign Tax Credits and Penalties and Interest	$ 5,200,000		$ 5,200,000

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Selected Balance Sheet Accounts (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Inventory for remotely operated vehicles	$ 188,197	$ 174,612
Other inventory, primarily raw materials	257,820	156,668
Total	446,017	331,280
Investments in unconsolidated affiliates	38,669	42,619
Medusa Spar LLC Investment [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	38,581	42,540
Other Equity Method Investees [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	$ 88	$ 79

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Business Segment Information

9 Months Ended

Sep. 30, 2013

Segment Reporting, Measurement Disclosures [Abstract]

Business Segment Information

BUSINESS SEGMENT INFORMATION

We are a global oilfield provider of engineered services and products, primarily to the offshore oil and gas industry, with a focus on deepwater applications. Through the use of our applied technology expertise, we also serve the defense and aerospace industries. Our Oil and Gas business consists of Remotely Operated Vehicles ("ROVs"), Subsea Products, Subsea Projects and Asset Integrity. Our ROV segment provides submersible vehicles operated from the surface to support offshore oil and gas exploration, development and production activities. Our Subsea Products segment supplies a variety of hardware and related services. Our Subsea Projects segment provides multiservice vessels, oilfield diving and support vessel operations, which are used primarily in inspection, maintenance and repair and installation activities. We also operate and maintain offshore and onshore oil and gas production facilities, provide subsea engineering services, and operate an offshore logistics supply base in Australia. Our Asset Integrity segment provides asset integrity management and assessment services and nondestructive testing and inspection. Our Advanced Technologies business provides project management, engineering services and equipment for applications in non-oilfield markets. Unallocated Expenses are those not associated with a specific business segment. These consist of expenses related to our incentive and deferred compensation plans, including restricted stock and bonuses, as well as other general expenses, including corporate administrative expenses.

There are no differences in the basis of segmentation or in the basis of measurement of segment profit or loss from those used in our consolidated financial statements for the year ended December 31, 2012.

The table that follows presents Revenue and Income from Operations by business segment for each of the periods indicated.

	Three Months Ended									Nine Months Ended
(in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Revenue
Oil and Gas
Remotely Operated Vehicles	$	254,979		$	224,649		$	242,163		726,770			627,422
Subsea Products	263,671			215,617			258,016			735,692			579,481
Subsea Projects	143,132			101,719			118,195			349,782			264,843
Asset Integrity	118,657			113,588			124,740			358,246			320,704
Total Oil and Gas	780,439			655,573			743,114			2,170,490			1,792,450
Advanced Technologies	72,858			78,644			77,258			221,731			209,205
Total	$	853,297		$	734,217		$	820,372		$	2,392,221		$	2,001,655
Income from Operations
Oil and Gas
Remotely Operated Vehicles	$	74,710		$	66,724		$	69,219		$	209,764		$	187,825
Subsea Products	61,737			50,841			62,060			166,576			117,093
Subsea Projects	30,700			17,765			23,990			66,310			41,301
Asset Integrity	16,373			14,556			16,639			45,351			37,538
Total Oil and Gas	183,520			149,886			171,908			488,001			383,757
Advanced Technologies	6,400			5,393			10,165			25,241			15,547
Unallocated Expenses	(36,184		)	(31,466		)	(35,736		)	(104,879		)	(89,457		)
Total	$	153,736		$	123,813		$	146,337		$	408,363		$	309,847

We determine income from operations for each business segment before interest income or expense, other income (expense) and provision for income taxes. We do not consider an allocation of these items to be practical.

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Income Taxes - Summary Of Earliest Tax Years Open To Examination (Details)	9 Months Ended
	Sep. 30, 2013
United States [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2010
United Kingdom [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2009
Norway [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2003
Angola [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2007
Nigeria [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2006
Brazil [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2007
Australia [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2009
Canada [Member]
Income Tax Examination [Line Items]
Earliest tax years open to examination by tax authorities	2009

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Debt (Tables)

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Schedule of Debt

Long-term Debt consisted of the following:

(in thousands)	Sep 30, 2013		Dec 31, 2012
Revolving credit facility	$	40,000	$	94,000
Long-term Debt	$	40,000	$	94,000

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Income Taxes

9 Months Ended

Sep. 30, 2013

Income Tax Expense (Benefit) [Abstract]

Income Taxes

INCOME TAXES

During interim periods, we provide for income taxes based on our current estimated annual effective tax rate using assumptions as to (1) earnings and other factors that would affect the tax provision for the remainder of the year and (2) the operations of foreign branches and subsidiaries that are subject to local income and withholding taxes. We conduct business through several foreign subsidiaries and, although we expect our consolidated operations to be profitable, there is no assurance that profits will be earned in entities or jurisdictions that have net operating loss carryforwards available. The primary difference between our effective tax rate of 31.5%in the nine-month periods endedSeptember 30, 2013 and 2012 and the federal statutory rate of 35% reflects our intention to indefinitely reinvest in certain of our international operations. Therefore, we do not provide for U.S. taxes on a portion of our foreign earnings.

We conduct our international operations in a number of locations that have varying laws and regulations with regard to income and other taxes, some of which are subject to interpretation. We recognize the benefit for a tax position if the benefit is more likely than not to be sustainable upon audit by the applicable taxing authority. If this threshold is met, the tax benefit is then measured and recognized at the largest amount that we believe is greater than 50% likely of being realized upon ultimate settlement. We do not believe that the total of unrecognized tax benefits will significantly increase or decrease in the next 12 months.

We account for any applicable interest and penalties on uncertain tax positions as a component of our provision for income taxes on our financial statements. Including associated foreign tax credits and penalties and interest, we have accrued a net total of $5.2 million in the caption "other long-term liabilities" on our balance sheet for unrecognized tax benefits at September 30, 2013. All additions or reductions to those liabilities would affect our effective income tax rate in the periods of change.

Our tax returns are subject to audit by taxing authorities in multiple jurisdictions. These audits often take years to complete and settle. The following lists the earliest tax years open to examination by tax authorities where we have significant operations:

Jurisdiction	Periods
United States	2010
United Kingdom	2009
Norway	2003
Angola	2007
Nigeria	2006
Brazil	2007
Australia	2009
Canada	2009

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Summary Of Major Accounting Policies

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Summary Of Major Accounting Policies

SUMMARY OF MAJOR ACCOUNTING POLICIES

Basis of Presentation. We have prepared these unaudited consolidated financial statements pursuant to instructions for quarterly reports on Form 10-Q, which we are required to file with the Securities and Exchange Commission. These financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAP"). These financial statements reflect all adjustments that we believe are necessary to present fairly our financial position at September 30, 2013 and our results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, all such adjustments are of a normal and recurring nature. These financial statements should be read in conjunction with the consolidated financial statements and related notes included in our annual report on Form 10-K for the year ended December 31, 2012. The results for interim periods are not necessarily indicative of annual results.

Principles of Consolidation. The consolidated financial statements include the accounts of Oceaneering International, Inc. and our 50% or more owned and controlled subsidiaries. We also consolidate entities that are determined to be variable interest entities if we determine that we are the primary beneficiary; otherwise, we account for those entities using the equity method of accounting. We use the equity method to account for our investments in unconsolidated affiliated companies of which we own an equity interest of between 20% and 50% and as to which we have significant influence, but not control, over operations. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates. The preparation of financial statements in conformity with U.S. GAAP requires that our management make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents. Cash and cash equivalents include demand deposits and highly liquid investments with original maturities of three months or less from the date of the investment.

Accounts Receivable – Allowances for Doubtful Accounts. We determine the need for allowances for doubtful accounts using the specific identification method. We do not generally require collateral from our customers.

Inventory. Inventory is valued at lower of cost or market. We determine cost using the weighted-average method.

Property and Equipment. We provide for depreciation of property and equipment on the straight-line method over their estimated useful lives. We charge the costs of repair and maintenance of property and equipment to operations as incurred, while we capitalize the costs of improvements that extend asset lives or functionality. Upon the disposition of property and equipment, the related cost and accumulated depreciation accounts are relieved and any resulting gain or loss is included as an adjustment to cost of services and products.

We capitalize interest on assets where the construction period is anticipated to be more than three months. We capitalized no interest in the nine-month periods endedSeptember 30, 2013 and 2012. We do not allocate general administrative costs to capital projects.

Business Acquisitions. We account for business combinations using the acquisition method of accounting, and we allocate the acquisition price to the assets acquired and liabilities assumed based on their fair market values at the date of acquisition.

Goodwill and Intangible Assets. In our annual evaluation of goodwill for impairment, we first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, we determine it is more likely than not that the fair value of a reporting unit is no less than its carrying amount, performing the two-step impairment test is unnecessary. However, if we conclude otherwise, then we are required to perform the first step of the two-step impairment test. We tested the goodwill attributable to each of our reporting units for impairment as of December 31, 2012 and concluded that there was no impairment. The only changes in our reporting units' goodwill during the periods presented are from business acquisitions and currency exchange rate changes.

Intangible assets, primarily acquired in connection with business combinations, include trade names, intellectual property and customer relationships and are being amortized over their estimated useful lives.

New Accounting Standards. In February 2013, the Financial Accounting Standards Board (FASB) issued an update to improve the reporting of amounts reclassified out of accumulated other comprehensive income. The update amends the presentation of changes in accumulated other comprehensive income and requires an entity to report the change of each component of other comprehensive income, including amounts reclassified out of accumulated comprehensive income into operating income, either on the face of the income statement or as a separate disclosure in the notes. We adopted this update on January 1, 2013, as required.

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Business Segment Information (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting, Measurement Disclosures [Abstract]

Financial Data By Business Segment

The table that follows presents Revenue and Income from Operations by business segment for each of the periods indicated.

	Three Months Ended									Nine Months Ended
(in thousands)	Sep 30, 2013			Sep 30, 2012			Jun 30, 2013			Sep 30, 2013			Sep 30, 2012
Revenue
Oil and Gas
Remotely Operated Vehicles	$	254,979		$	224,649		$	242,163		726,770			627,422
Subsea Products	263,671			215,617			258,016			735,692			579,481
Subsea Projects	143,132			101,719			118,195			349,782			264,843
Asset Integrity	118,657			113,588			124,740			358,246			320,704
Total Oil and Gas	780,439			655,573			743,114			2,170,490			1,792,450
Advanced Technologies	72,858			78,644			77,258			221,731			209,205
Total	$	853,297		$	734,217		$	820,372		$	2,392,221		$	2,001,655
Income from Operations
Oil and Gas
Remotely Operated Vehicles	$	74,710		$	66,724		$	69,219		$	209,764		$	187,825
Subsea Products	61,737			50,841			62,060			166,576			117,093
Subsea Projects	30,700			17,765			23,990			66,310			41,301
Asset Integrity	16,373			14,556			16,639			45,351			37,538
Total Oil and Gas	183,520			149,886			171,908			488,001			383,757
Advanced Technologies	6,400			5,393			10,165			25,241			15,547
Unallocated Expenses	(36,184		)	(31,466		)	(35,736		)	(104,879		)	(89,457		)
Total	$	153,736		$	123,813		$	146,337		$	408,363		$	309,847

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Selected Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2013

Balance Sheet Related Disclosures [Abstract]

Schedule of Selected Balance Sheet Accounts [Table Text Block]

(in thousands)		Sep 30, 2013		Dec 31, 2012
Inventory:
	Remotely operated vehicle parts and components	$	188,197	$	174,612
	Other, primarily raw materials	257,820		156,668
	Total	$	446,017	$	331,280
Investments in unconsolidated affiliates:
	Medusa Spar LLC	$	38,581	$	42,540
	Other	88		79
	Total	$	38,669	$	42,619

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Summary Of Major Accounting Policies Summary of Major Accounting Policies - Subsequent Event (Details) (USD $)	3 Months Ended										6 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Jun. 30, 2013
Accounting Policies [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.22	$ 0.22	$ 0.22	$ 0.18	$ 0.18	$ 0.18	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.18

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Summary Of Major Accounting Policies - Principles of Consolidation And Repurchases (Details)	Sep. 30, 2013
Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Percentage	50.00%
Equity Method Investment, Ownership Interest Threshold For Consolidation, Percentage	20.00%
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Interest Threshold For Consolidation, Percentage	50.00%

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Document and Entity Information Document	9 Months Ended
	Sep. 30, 2013	Oct. 18, 2013
Document Information [Line Items]
Entity Registrant Name	OCEANEERING INTERNATIONAL INC
Entity Central Index Key	0000073756
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		108,197,444

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Summary Of Major Accounting Policies - Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Accounting Policies [Abstract]
Interest Costs, Capitalized, Minimum Construction Period	9 months	9 months
Interest Costs, Capitalized During Period	$ 0	$ 0