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Wärtsilä to convert Stena Line vessels to methanol

Wartsila A Wartsila-branded engine casing marked methanol
Stena Line has contracted Wärtsilä to convert some of its ferries to operate on methanol

Wärtsilä said the conversion will include fuel supply systems, engine modifications, and integration of new with existing onboard systems.

The retrofits are scheduled for 2025, but neither Wärtsilä nor Stena Line said which vessels and routes would be affected.

"As we continue to implement our strategy to decarbonise all our operations, we see methanol as a viable alternative fuel that will help us achieve this ambition. Wärtsilä has proven its capabilities to carry out the necessary conversions. This was shown eight years ago when they converted the Stena Germanica to operate with methanol, and our experience from this ground-breaking innovation has been very positive," said Ian Hampton of Stena Line.

Wärtsilä said the retrofitted vessels will be able to be compliant with various existing and upcoming regulations, including the Carbon Intensity Indicator (CII), FuelEU Maritime, and IMO 2050 GHG reduction target. Compliance will depend on the fuel used, from zero emission green methanol through to fuel oil.

The full scope of the retrofit package will include: fuel tank instrumentation and valves, transfer pumps, low pressure pump skid, fuel valve trains, Methanol Fuel Pump Units, automation of the system, engine conversions, and automation upgrades for the engine control room.

"We have had close co-operation with Stena Line for many years and we are pleased to be supporting them again in this important conversion project. Like Stena Line, Wärtsilä is committed to making decarbonised shipping operations a reality, and we have invested heavily in developing our engine portfolio to be capable of utilising carbon neutral and zero carbon fuels," said Roger Holm, President of Wärtsilä’s Marine Power business.