Welcome to the marine group

Passionate about people, communities & customer service

The Marine Group is a Comprehensive Marine Service Business

Our boatyard premises provide some of the largest and most comprehensive facilities in Wales and cover the full range of services from boat repairs to engine servicing and replacement.

The service team are friendly and passionate in their quest to provide genuine and exemplary customer service whether for a small job or a large insurance contract repair. Please feel free to contact us if you would like to discuss any work.

Our Harbour Management team provides contracted dredging services including water injection and cutter sucker dredging delivered by one of our four dredgers. In support of dredging works we are able to provide licencing, environmental assessments, and surveying. In addition, we provide consulting services for the development of commercial marinas and harbours on behalf of third-party customers.


Trusted Marine Services Led by Experienced Professionals

The Marine Group Services is a passionate and highly experienced team. The team is led by Craig Deans, Head of Marine Services who would be delighted to speak with you.

Our Range of Marine Services

Offering you a full range of boat servicing, repaires and refits from our state-of-the-art facilities.

Harbour Management & Dredging

With a wealth of expertise in harbour and marina management, our team can support multiple areas of your operations.

Marine Engineering Services

Offering leisure and commercial marine customers a complete power solution covering hire, sales, servicing and parts.

Industrial Engineering Services

Ensuring your power systems are reliable, providing efficient servcing, maintenance packages and 24-hour emergency call out.

Property Development & Operation

We’re waterside place-makers, passionate about developing, owning and operating prime waterfront environments.

Business Structure

The Maine Group Services Ltd is newly capitalised and is ultimately owned by COS Investments Sàrl, a specialist marine business investment fund with investments in a number of marinas, service businesses and property.