Allseas’ newbuild heavy transport vessel to sport Wärtsilä’s ‘future-proof’ engines
Finnish technology group Wärtsilä has been hired to equip a new purpose-built semi-submersible heavy transport vessel (HTV), which will expand the fleet of Switzerland-based offshore contractor Allseas Group upon completion, with engines, featuring readiness to use alternative sustainable fuels and a modular design, said to enable a significant reduction in maintenance requirements and costs.

The Finnish firm will supply the engines, described as “future-proof,” for Allseas’ new purpose-built semi-submersible HTV, which is being built at the Guangzhou Shipyard International (GSI) facilities in China. The Wärtsilä 31 engine order for the vessel, designed to minimize exhaust emissions and maximize fuel efficiency, was booked in Q4 2025.
Sytske de Groot, Manager of Naval Architecture – Allseas, commented: “This new HTV strengthens the
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