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Contact Details

Ben Bradley-Watson
T: 01590647416

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Gemini Marine

Established in 1979 and based in Cape Town, South Africa, Gemini Marine has designed and manufactured the most comprehensive range of cabin and open RIBs for many of the world’s Military, Rescue and Commercial entities for over 30 years – as well as supplying RIBs into the Expeditionary, Leisure and Adventure sectors.

These markets recognise the resilience, reliability and durability of Gemini RIBs through even the most extreme and dangerous conditions.

A proven pedigree, together with the benefit of being supported by the Berthon Boat Company – one of the UK’s most established and well-recognised marine sales, service and support brands – means Gemini customers can be assured they will receive the highest quality and most reliable after-sales and in-service support.

Gemini Waverider Range

Gemini manufacture open and cabined RIBs from 5m to 10.65 metres, with options to be powered by single or twin inboard or outboard engines. Each RIB is configured, powered and equipped to meet the customer’s individual requirements.

Custom Built RIBs

As an experienced supplier to Defence, Rescue, Leisure and Commercial sector, Gemini understand our clients has their unique sets of technical and operational requirements.

With every boat built to order, we can offer a host of options, electronic configurations, seating, and engine choices as well as being able to facilitate bespoke modifications.

Ex-demonstration RIBs

Our range of ex-demo boats have been used solely for demonstration purposes or at local boat-shows. They are available with a discount from the list price.

All Gemini RIBs are built to internationally recognised standards and can be easily re-equipped and coded to meet local authority regulatory compliance.

Technical Information

Since 1983, Gemini has been designing and building RIBs to take on challenging and responsible roles in some of the harshest environments in the world for many of the world’s Military, Rescue and Commercial entities.

But why have so many chosen a Gemini?

Design & Quality

Gemini’s in-house design department models each project using 3D Computer Aided Design (CAD) to enable our clients to visualise the final product.

The rounded deep ‘V’ shaped Gemini hull offers excellent performance, comfort and responsive handling at top speeds, especially in heavy seas. The boats are built using the latest technology and techniques, ensuring quality and reliability.

Gemini RIB s are arduously tested around some of the most treacherous coastlines and in the most extreme sea conditions in the world.


Gemini Marine holds the ISO 9001:2008 Quality Management System certification issued by DNV, assuring our worldwide client base of continuous quality management throughout the entire production process.

The fit-out process is completed at Berthon, who hold ISO 9001:2015, ISO 14001:2015 and OHSAS18001:2007.

When ordering a Gemini, you are guaranteed quality, adhering and exceeding the most exacting international standards. Our clients can have total confidence in every Gemini product.

Engines Selection

We provide both petrol and diesel solutions in both outboard and inboard configurations. Outboard engine brands include Mercury, Suzuki, Yamaha, Honda, Cox Powertrain, Steyr and Volvo Penta.

Services & Support

Berthon are the sole UK & Ireland distributors for sales and support of Gemini RIBS from our UK base in Lymington. Our clients include various Military, Rescue, Commercial, Leisure and Adventure sectors.

Gemini at Berthon hold a stock of new RIBs and spare parts at their 14 acre (46,000sqm) modern boatyard in Lymington. Berthon’s skills and experience in supporting multiple maritime sectors will guarantee that an outstanding and proven service and technical support package is provided to meet a client’s unique requirements.

Complete Package

The Gemini Technical, Development and Quality Team work in close partnership with clients across a wide variety of Rescue, Commercial, Adventure, Military and Law enforcement projects. This expertise is supported by the skilled boat builders at Berthon. We are able to offer our clients a complete design, build and support solution.

Adventure and Leisure RIBs

Where is your next Adventure going to take you?

Gemini boats have been carrying adventurers to some of the most remote and difficult to access corners of the globe for years.

To travel to these places, you need a RIB that has been proven itself dependable in some of the most testing waters in the world, by a clientele demanding only the best.

Commercial and Rescue RIBs

Gemini has an outstanding reputation as a proven rescue craft supplier to the Commercial and Rescue sectors, with the South Africa’s National Sea Rescue Institution (NSRI) having chosen Gemini as their predominant provider of rescue craft. Operating along the rugged South African coastline since 1984, the NSRI trust the Gemini name to get the job done.

Patrol and Protection RIBs

For many years, Gemini RIBs have been in operation with many prestigious organisations including the United Nations, UK Police Force, Royal Australian Navy, Royal New Zealand Navy and many more.

The Geminis provided to these institutions have all been equipped, adapted and modified to undertake a wide variety of roles. Some notable examples of boats requiring bespoke fit-outs have included those destined for Bomb Disposal, Anti-Piracy and Policing and Law Enforcement.


For many years, Gemini RIBs have been taking extreme adventurers to some of the furthest, most isolated and hard to reach parts of the world.

Here, you’ll find a selection of Gemini adventures from across the globe: from explorers taking on the Nile, to teams recovering astronauts as they land back to earth. Join Gemini in a circumnavigation of Australia, or on a mission distributing Mosquitos nest to the remotest corners of Africa.


Cape Town To Cairo

Gemini provided customised expeditionary boats that were required for a humanitarian team. Gemini did so with pride in the knowledge that they were supporting the excellent philanthropic contributions that the Holgate family and their crew were making to people in need.


National Sea Rescue Institution

Some of the world’s best designs are run in the NSRI rescue fleet, and so it is with great pride that an amazing 63 out of 80 boats in the South Africa’s National Sea Rescue fleet are Geminis.

Contact Details

Ben Bradley-Watson
Tel: 01590647416