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Wartsila has been selected to supply an engine for a new Allseas Group semi-submersible heavy transport vessel under construction at Guangzhou Shipyard International, China. The engine order was booked in Q4 2025, with delivery of the vessel expected in Q1 2028.

The Wärtsilä 31 engine was chosen for its modular design, which reduces maintenance costs and requirements, and its capability to use alternative sustainable fuels. The engine will also include an NOx reducer for nitrogen oxide reduction. This selection provides the shipowner with flexibility to convert to fuels like methanol or ammonia as they become available.