Subsea 7 — Capital/Financing Update 2017

Sep 6, 2017

Subsea 7 awards letter of intent for new reel-lay vessel

Luxembourg – 06 September 2017 - Subsea 7 S.A. (Oslo Børs: SUBC, ADR: SUBCY) today announced that it has signed a letter of intent with Royal IHC in the Netherlands for the construction of a new reel-lay vessel and associated pipe lay equipment. The cost, excluding capitalised interest, is expected to be below USD 300 million with an early 2020 delivery. The firm contract with Royal IHC is expected to be awarded before the end of 2017, subject to certain conditions and final Board approval.

When delivered, the vessel will be Subsea 7's highest specification reel-lay vessel, capable of installing complex rigid flowlines including pipe-in-pipe systems and electrical trace heating. This capability will address the market trend towards longer tie-back developments. The new vessel will replace Seven Navica, which is expected to be retired from reel-lay operations in due course.

Jean Cahuzac, CEO, said: "We are committed to having the right fleet size and specification to meet the needs of our clients. We achieve this through a combination of owned high-specification vessels and leased vessels having strict regard to capital discipline. We have removed three owned vessels from our fleet during the last two years and will continue to actively manage our fleet composition. The expected gradual recovery of market activity and application of new cost-effective technology supports this investment decision, which will enable Subsea 7 to participate in new prospects that are already visible in the market."

******************************************************************************* Subsea 7 S.A. is a leading global contractor in seabed-to-surface engineering, construction and services to the offshore energy industry. We provide technical solutions to enable the delivery of complex projects in all water depths and challenging environments. Subsea 7 is listed on the Oslo Bors (SUBC), ISIN LU0075646355. *******************************************************************************

Contact for investment community enquiries: Isabel Green Investor Relations Director Tel +44 (0)20 8210 5568 isabel.green@subsea7.com www.subsea7.com

Contact for media enquiries: Julie Taylor Communications Manager Tel +44 (0)1224 526270 julie.taylor@subsea7.com www.subsea7.com

Forward-Looking Statements: Certain statements made in this announcement may include 'forward-looking statements'. These statements may be identified by the use of words like 'anticipate', 'believe', 'could', 'estimate', 'expect', 'forecast', 'intend', 'may', 'might', 'plan', 'predict', 'project', 'scheduled', 'seek', 'should', 'will', and similar expressions. The forward-looking statements reflect our current views and are subject to risks, uncertainties and assumptions. The principal risks and uncertainties which could impact the Group and the factors which could affect the actual results are described but not limited to those in the 'Risk Management' section in the Group's Annual Report and Consolidated Financial Statements2016. These factors, and others which are discussed in our public announcements, are among those that may cause actual and future results and trends to differ materially from our forward-looking statements: actions by regulatory authorities or other third parties; our ability to recover costs on significant projects; the general economic conditions and competition in the markets and businesses in which we operate; our relationship with significant clients; the outcome of legal and administrative proceedings or governmental enquiries; uncertainties inherent in operating internationally; the timely delivery of vessels on order; the impact of laws and regulations; and operating hazards, including spills and environmental damage. Many of these factors are beyond our ability to control or predict. Other unknown or unpredictable factors could also have material adverse effects on our future results. Given these factors, you should not place undue reliance on the forwardlooking statements.