Confirmation regarding appointment of Directors

Gulf Marine Services PLC

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

Confirmation under Listing Rule 9.6.13R regarding appointment of Directors

Gulf Marine Services (LSE: GMS), further to the announcement made by the Company on 10 November 2020, confirms that, in connection with the appointments of Rashed Saif Al Jarwan, Mansour Al Alami and Saeed Mer Abdulla Khoory as Directors effective 10 November 2020, the Company confirms that for the purposes of paragraph 9.6.13 (1) of the Listing Rules of the UK Listing Authority (the "Listing Rules") Rashed Saif Al Jarwan is currently a director of the following publicly quoted companies:

· Dana Gas (Vice Chairman);

· Oman Insurance Company (Non-Executive Director); and

· Mashreq Bank PSC (Non-Executive Director).

There are no additional matters requiring disclosure under Rule 9.6.13R of the Listing Rules.

Enquiries:

GMS

Mansour Al Alami (Chairman) +44 (0) 20 7603 1515

Brunswick (PR Adviser to GMS)

Patrick Handley - UK +44 (0) 20 7404 5959

Will Medvei - UK

Jade Mamarbachi - UAE +971 (0) 50 600 3829

ABOUT GMS

GMS, a company listed on the London Stock Exchange, was founded in Abu Dhabi in 1977 and has become a world-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 and Saudi Arabia. The Group's assets are capable of serving clients' requirements across the globe, including those in the Middle East, South East Asia, West Africa, North America, the Gulf of Mexico and Europe.

The GMS fleet of 13 SESVs is amongst the youngest in the industry, with an average age of eight years. The vessels support GMS's 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 - K-Class (Small), S-Class (Mid) and E-Class (Large) - with these capable of operating in water depths of 45m to 80m depending on leg length. 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.

The Company's Legal Entity Identifier is 213800IGS2QE89SAJF77.