![Wärtsilä will supply the engines for Allseas’ new semi-submersible heavy transport vessel Grand Tour. [Image © Allseas]](https://www.marinelog.com/wp-content/uploads/2026/01/allseas_grand_tour-300x225.jpg)
Allseas new heavy transport vessel Grand Tour will feature future-ready Wärtsilä 31 engines
Wärtsilä will supply the engines for the Grand Tour, a new purpose-built semi-submersible heavy transport vessel (HTV) on order for Switzerland-based offshore contractor Allseas Group at Guangzhou Shipyard International (GSI) in China.
