Gulf Marine Services : Contract Award for a Large Class Vessel in Europe

Gulf Marine Services PLC

('Gulf Marine Services', 'GMS', 'the Company' or 'the Group')

New Contract Award for a Large Class Vessel in Europe

Gulf Marine Services (LSE: GMS), the leading provider of advanced self-propelled self-elevating support vessels serving the offshore oil, gas and renewable energy sectors, is pleased to announce it has been awarded a new contract to support a wind farm project in Europe for an international energy company.

The new contract is for a Large Class SESV with a charter period of eight months (including options). The vessel will proceed directly onto the new charter towards the end of Q3 2018 following the completion of its current long-term contract in the oil and gas sector in the region.

Duncan Anderson, Chief Executive Officer of GMS, said:

'We have a successful track record in the renewables energy sector in Europe. Currently two of our Large Class vessels are supporting wind farm projects in the region and we are delighted to have gained a new client in the sector with this latest contract win. We look forward to deploying a third Large Class SESV onto the new charter, with our ability to transfer from oil and gas operations to wind farm development testament to our vessel flexibility and operational experience in both sectors.'

- Ends -

This announcement contains inside information.

John Brown

Company Secretary (responsible for arranging the release of this announcement)

Gulf Marine Services PLC

25 June 2018

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Notes to Editors:

Gulf Marine Services PLC, a company listed on the London Stock Exchange, was founded in Abu Dhabi in 1977 and has become the world's leading provider of advanced self-propelled self-elevating support vessels (SESVs). The fleet serves the oil, gas and renewable energy industries from its offices in the United Arab Emirates, Saudi Arabia and the United Kingdom. The Group's assets are capable of serving clients' requirements across the globe, including those in the Middle East, South East Asia, West Africa and Europe.

The GMS core fleet of 13 SESVs is amongst the youngest in the industry, with an average age of seven years. The vessels support GMS' clients in a broad range of offshore oil and gas platform refurbishment and maintenance activities, well intervention work and offshore wind turbine maintenance work (which are opex-led activities), as well as offshore oil and gas platform installation and decommissioning and offshore wind turbine installation (which are capex-led activities).

The SESVs are categorised by size - Large, Mid-Size and Small Class - with these operating in water depths of 80m, 55m and 45m respectively. The vessels are four-legged and are self-propelled, which means they do not require tugs or similar support vessels for moves between locations in the field; this makes them significantly more cost-effective and time-efficient than conventional offshore support vessels without self-propulsion. They have a large deck space, crane capacity and accommodation facilities (for up to 300 people) that can be adapted to the requirements of the Group's clients. In addition, an innovative well workover cantilever system commissioned on a Large Class SESV in 2017 allows GMS to increase the well intervention activities carried out from the vessel and to supplant higher cost non-propelled drilling rigs.

Gulf Marine Services PLC's Legal Entity Identifier is 213800IGS2QE89SAJF77

www.gmsuae.com

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The content of the Gulf Marine Services PLC website should not be considered to form a part of or be incorporated into this announcement.

Cautionary Statement

This announcement includes statements that are forward-looking in nature. All statements other than statements of historical fact are capable of interpretation as forward-looking statements. These statements may generally, but not always, be identified by the use of words such as 'will', 'should', 'could', 'estimate', 'goals', 'outlook', 'probably', 'project', 'risks', 'schedule', 'seek', 'target', 'expects', 'is expected to', 'aims', 'may', 'objective', 'is likely to', 'intends', 'believes', 'anticipates', 'plans', 'we see' or similar expressions. By their nature these forward-looking statements involve numerous assumptions, risks and uncertainties, both general and specific, as they relate to events and depend on circumstances that might occur in the future.

Accordingly, the actual results, operations, performance or achievements of the Company and its subsidiaries may be materially different from any future results, operations, performance or achievements expressed or implied by such forward-looking statements, due to known and unknown risks, uncertainties and other factors. Neither Gulf Marine Services PLC nor any of its subsidiaries undertake any obligation to publicly update or revise any forward-looking statement as a result of new information, future events or other information. No part of this announcement constitutes, or shall be taken to constitute, an invitation or inducement to invest the Company or any other entity, and must not be relied upon in any way in connection with any investment decision. All written and oral forward-looking statements attributable to the Company or to persons acting on the Company's behalf are expressly qualified in their entirety by the cautionary statements referred to above.