Marsun Shipyard in Thailand has announced the contract of two Inertia M3 high-speed trimaran crew transfer vessels with U-Ming Marine Offshore Co. Ltd. (UMO), a joint venture between U-Ming Marine Transport Corp. and World Marine Offshore (WMO).

The shipyard has worked diligently to win the contract in strong competition with numerous international shipyards, and with this contract Marsun is securing a strong position as a high-quality builder for the international offshore windfarm Crew Transfer Vessel (CTV) market.

The vessels are designed by WI-ND Naval Architects based on the proven Inertia trimaran hull form, and in close collaboration with Sydney based high-speed craft experts One2three Naval Architects. The experienced design team provides Marsun Shipyard with a complete engineering package to build efficient, weight and cost optimised vessels. The vessels will be built to Danish Flag requirements and classed as passenger vessels in Bureau Veritas in compliance with IMO high-speed code.

The aluminium hull features three independent and identical drivelines in three separate hulls, giving the vessel unparalleled redundancy, maneuverability, and flexibility to optimise engine running hours. Optimised hull features give the vessel high inertia and soft motions to provide a comfortable platform for extended periods offshore, and together with the hydraulic Softbow fender, the latest generation of Inertia trimaran hulls have proven to transfer service personnel in up to 3m significant wave height. The hull design is also prepared for hybrid installation.

The accommodations feature 24 passenger seats with 180° visibility, two single officer cabins and two double crew cabins along with a generous crew mess and TV lounge area. The entire superstructure is installed on resilient mounts and together with the low vibrations from the waterjet propulsion, the noise levels in the superstructure will be well below 60 dBA at all speeds.

The forward deck area features a large cargo deck for containers and toolboxes as well as an impressive 50 cubic metre climate-controlled storage facility under deck only made possible by the form of the trimaran hull shape.

Marsun Shipyard was established in 1980 and has delivered over 319 various types of vessels, such as fast patrol craft, fast attack missile craft, crew and supply vessels, ferries, motor yachts, oil spill recovery vessels, multi-purpose craft and more.