Danish operator Scandlines is working with engineering giant Caterpillar to assess methanol as a fuel for its ferries.
If tests prove positive, it could retrofit engines on two ferries running between Germany and Denmark on the Rostock-Gedser route in 2027.
These vessels, the 22,300-gt Berlin and Copenhagen (both built 2016) already have marine batteries and Flettner rotors installed.
Caterpillar announced in 2022 that it was working on developing a methanol-diesel dual-fuel version of its 3500E engines and recently secured approval in principle for a methanol-ready design from DNV.
