© Fincantieri
Italian shipbuilder Fincantieri has floated out the Viking Libra, described as the world’s first hydrogen-powered cruise ship, at its Ancona yard, with delivery to cruise operator Viking expected later this year.
Hybrid hydrogen design reflects wider fuel uncertainty
The vessel enters service as shipping groups assess competing decarbonisation pathways, with hydrogen fuel cells competing against hydrogen-derived fuels such as ammonia and e-methanol. Regulatory pressure has increased in Europe since the extension of the EU emissions trading system to ships above 5,000 gross tonnes in 2024, raising costs for carbon-intensive fuels.
Fuel cell system and onboard hydrogen storage
The 239-metre ship, with a gross tonnage of about 54,300–54,500 tonnes according to company disclosures, will use a hybrid propulsion system combining liquefied hydrogen and diesel generators running on marine gas oil. The system can operate on hydrogen alone and is designed to deliver up to 6MW of power.
Fuel cells are supplied by Fincantieri subsidiary Isotta Fraschini Motori, which manufactures proton exchange membrane (PEM) systems from a facility in Bari opened with EU support in 2025. Hydrogen will be stored onboard in a containerised liquid form, though Viking has not disclosed its fuel supply arrangements.
Capacity, deployment and follow-on orders
The ship will accommodate up to 998 passengers across 499 staterooms and is scheduled to operate in the Mediterranean and northern Europe following delivery, expected around November or by year-end depending on final outfitting timelines.
Fincantieri is also building a second hydrogen-powered vessel, the Viking Astrea, for delivery in 2027, indicating a continued commitment by Viking to the technology.
Industry implications hinge on fuel supply and safety
Viking’s chief executive Torstein Hagen said the vessel represents its “most environmentally friendly” design and described hydrogen as a “true zero-emission solution”, although lifecycle emissions depend on how the hydrogen is produced.
The project highlights both the potential and constraints of hydrogen in maritime transport. While fuel cells offer zero emissions at the point of use and could allow access to environmentally sensitive areas, uncertainties over fuel availability, cost and safety — particularly compared with ammonia, which poses toxicity risks in passenger settings — continue to shape investment decisions across the sector.
