33m Supa-SWATH Crew Transport Vessel Launched

Wednesday, 18th March 2026

Walker Marine Design and Mainprize Offshore Launch Next-Generation 33m Supa-SWATH Crew Transport Vessel

Walker Marine Design and Mainprize Offshore have announced the launch of their latest crew transport vessel (CTV) innovation: a next-generation 33-metre Supa-SWATH design engineered for superior offshore performance.

Building on a proven platform first developed in 2015 and validated through extensive testing at the Haslar Ocean Basin, the Supa-SWATH hull form has established itself as a leader in the global crew transfer vessel market. With multiple 26-metre vessels already in operation and additional units under construction at Strategic Marine, the design continues to evolve through ongoing research and development.

The new 33m Supa-SWATH crew transport vessel represents the second-generation iteration of this platform, incorporating refined hull lines to reduce resistance while maintaining exceptional seakeeping performance. The result is a highly efficient CTV capable of safe, reliable personnel transfer in challenging offshore conditions.

Designed with offshore wind and energy sector demands in mind, the vessel delivers significantly enhanced onboard capacity and comfort. It accommodates up to 36 industrial personnel in premium seating, alongside six cabins, a dedicated crew mess, and a purpose-built changing room—ensuring optimal welfare for both passengers and crew during extended operations.

With an overall length of 33 metres and a beam of 13 metres, the vessel also offers substantial increases in fuel, water, and cargo capacity. This enables extended range and operational flexibility, making it a versatile solution for modern offshore logistics and crew transfer requirements.

James Walker, Principal Naval Architect at Walker Marine Design, said:
“The Supa-SWATH crew transport vessel has evolved significantly since the first vessel entered service in 2018. With 14 vessels delivered and more than £3 million invested in research and development, this larger 33-metre design expands operational capability and sets a new benchmark for CTV performance.”

Bob Mainprize, Managing Director at Mainprize Offshore, added:
“This 33m crew transport vessel complements our existing fleet by offering a true multi-role offshore platform. Clients benefit from enhanced seakeeping, improved transfer efficiency, increased cargo capacity, and upgraded onboard facilities. Each vessel can also be customised to meet specific operational requirements, from layout to storage and cargo handling.”