McDermott Awarded Lump Sum Contract by Saudi Aramco

• Combined package is the largest single award in the history of McDermott’s Middle East Area

• Brownfield award follows signing of Long Term Agreement in June 2015

HOUSTON -- McDermott International, Inc. (MDR) announced today it has been awarded a lump sum contract by Saudi Aramco for brownfield work in various fields offshore Saudi Arabia.

Work on the contract is expected to be executed through the second quarter of 2018. The award follows the June 2015 signing of a second Long Term Agreement (LTA) between McDermott and Saudi Aramco for engineering, procurement, construction and installation (EPCI) opportunities in various fields offshore Saudi Arabia.

The package of various EPCI projects that make up the lump sum award represent the largest single award for McDermott’s Middle East Area operations in company history. Revenue from the fixed-price award will be included in McDermott’s third quarter 2015 backlog.

“Winning this important award and signing the new LTA sends a clear signal that our increased engagement with key clients is generating concrete results,” said David Dickson, McDermott’s President and CEO. “Our detailed knowledge and understanding of Saudi Aramco’s objectives, as well as our proven excellence in the Kingdom and the region continue to set us apart. Delivering on strong project execution and integrating McDermott’s local knowledge are critical to future success as we execute these and other projects for Saudi Aramco.”

Tom Mackie, McDermott’s Vice President, Middle East, said, “As one of the original two contractors for Saudi Aramco’s first LTA in 2007, we understand Saudi Aramco’s offshore fields, standards and specifications – and the value that Saudi Aramco places in McDermott’s fully integrated EPCI solutions.”

During the execution of the projects under the fixed price contract, McDermott plans to maximize in-Kingdom execution activities with a significant portion of the engineering and fabrication scope expected to be carried out by its engineering office in Al Khobar and fabrication facility in Dammam, respectively.

Additional services are expected to be provided by McDermott engineering teams in Dubai, United Arab Emirates and Chennai, India. Procurement is expected to be managed by McDermott’s Global Procurement Office based in Dubai and vessels from the McDermott global fleet, including specialized shallow-water installation vessels, are scheduled to undertake offshore installation.

McDermott provides its investors with information relating to estimated contract value in its quarterly supplemental financial information slides which can be found on the Investor Relations section of McDermott’s web site. This award would fall into the largest descriptor range included in these slides.

ABOUT McDERMOTT

McDermott (MDR) is a leading provider of integrated engineering, procurement, construction and installation (EPCI) services for upstream field developments worldwide. McDermott delivers fixed and floating production facilities, pipelines and subsea systems from concept to commissioning for complex offshore and subsea oil and gas projects to help oil companies safely produce and transport hydrocarbons. Our clients include national and major energy companies. Operating in more than 20 countries across the world, our locally focused and globally integrated resources include approximately 11,700 employees and contractors, a diversified fleet of specialty marine construction vessels, fabrication facilities and engineering offices. We are renowned for our extensive knowledge and experience, technological advancements, performance records, superior safety and commitment to deliver. McDermott has served the energy industry since 1923 and is listed on the New York Stock Exchange. As used in this press release, McDermott includes McDermott International, Inc. and its subsidiaries and affiliates. To learn more, visit www.mcdermott.com.

FORWARD-LOOKING STATEMENTS

In accordance with the Safe Harbor provisions of the Private Securities Litigation Reform Act of 1995, McDermott cautions that statements in this press release which are forward-looking, and provide other than historical information, involve risks, contingencies and uncertainties that may impact McDermott's actual results of operations. These forward-looking statements include, among other things, statements about backlog, to the extent backlog may be viewed as an indicator of future revenues, and the expected value, scope, execution and timing associated with the project discussed in this press release. Although we believe that the expectations reflected in those forward-looking statements are reasonable, we can give no assurance that those expectations will prove to have been correct. Those statements are made by using various underlying assumptions and are subject to numerous risks, contingencies and uncertainties, including, among others: our inability to successfully execute on contracts in backlog, changes in project design or schedules, the availability of qualified personnel, changes in the terms, scope or timing of contracts, contract cancellations, change orders and other modifications and actions by our customers and business partners, difficulties executing on the project and changes in industry norms. If one or more of these risks materialize, or if underlying assumptions prove incorrect, actual results may vary materially from those expected. For a more complete discussion of these and other risk factors, please see McDermott's annual and quarterly filings with the Securities and Exchange Commission, including its annual report on Form 10-K for the year ended December 31, 2014 and subsequent quarterly reports on Form 10-Q. This press release reflects management's views as of the date hereof. Except to the extent required by applicable law, McDermott undertakes no obligation to update or revise any forward-looking statement.

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