Viking’s new cruise ship, measuring approximately 239 meters and weighing about 54,300 gross tons, is the first vessel built to run partially on liquid hydrogen. It features 499 staterooms and accommodates 998 guests. The ship’s propulsion includes fuel cells powered by liquefied hydrogen alongside conventional engines.
The propulsion system includes proton exchange membrane fuel cells manufactured by Isotta Fraschini Motori, a Fincantieri subsidiary. Rated at six megawatts, or roughly 8,000 horsepower, these fuel cells contribute about one-third of the total propulsion power. The rest is provided by traditional engines, marking the vessel’s capability to operate with partial zero emissions during
selected periods.
Containerized Refueling Due to Lack of Port Infrastructure
The ship will be refueled through an innovative first-of-its-kind logistics solution involving crane-loaded containers of liquid hydrogen at ports. No cruise ports globally currently possess the infrastructure to pump liquid hydrogen fuel directly to vessels. This containerized approach enables refueling during port calls without requiring dockside pipelines or dedicated bunkering facilities.
Fincantieri developed this workaround as a supply chain solution, akin to bringing the fueling terminal aboard. However, this method limits the ship’s zero-emission operating range because the number of containers and frequency of replenishment constrain how long the ship can run on hydrogen fuel.
Regulatory Environment and Operational Planning
The ship’s initial
deployment is scheduled for November 2026, focusing on Mediterranean and Northern European routes, including Norway’s fjords. Norway’s zero-emission regulation targeting ships of 10,000 gross tons and above will become effective on January 1, 2032. Currently, the rule applies only to smaller vessels under 10,000 gross tons, enforced since January 1, 2026.
This timeline means the ship will operate before the regulatory mandate for large ships takes effect. Norway’s rules require zero direct CO2 or methane emissions in five UNESCO World Heritage fjords: Geirangerfjord, Nærøyfjord, Aurlandsfjord, Sunnylvsfjord, and Tafjord. The ship’s partial hydrogen propulsion offers compliance potential during these calls.
Hydrogen Fuel Sourcing and Environmental Impact
The
ship emits only water vapor from its hydrogen fuel cells. However, its overall environmental footprint depends on the hydrogen’s production method. Viking has not disclosed the source or “color” of the hydrogen fuel, leaving the vessel’s lifecycle emissions uncertain.
Most commercially available hydrogen derives from steam methane reforming, generating CO2 emissions. Green hydrogen produced via electrolysis from renewable power is currently limited in scale and more expensive, challenging large-scale maritime supply. Viking’s executives acknowledge hydrogen fuel as costly and difficult to obtain.
Statements from Viking and Industry Context
Torstein Hagen, Viking’s chairman, stated on May 14 that the fuel cells cover roughly one-third of the ship’s
propulsion and described the ship as “setting a direction of travel for the future of shipping.” Viking’s official communications describe the propulsion system as “based partially on liquefied hydrogen and fuel cells,” highlighting partial zero-emission capability.
Leah Talactac, Viking’s president and CEO, noted that the existing Viking fleet employs closed-loop scrubbers enabling heavy fuel oil use. Fincantieri continues developing hydrogen combustion engines and gas turbines as alternative solutions. Meanwhile, MSC Cruises operates the World Europa, a ship featuring a smaller, 150-kilowatt fuel cell running on LNG rather than hydrogen.
The hydrogen-powered Viking ship was floated out at Fincantieri’s Ancona shipyard
on March 19, 2026. Despite pioneering onboard fuel cell technology, the ship’s reliance on containerized hydrogen refueling and partial use of conventional propulsion indicates an incremental step toward maritime decarbonization rather than a wholesale shift.
Operational Range and Traveler Implications
The ship’s ability to operate with zero emissions is limited by the quantity of liquid hydrogen container capacity and refueling frequency at ports. Refueling occurs only during port calls using cranes, as no hydrogen fueling infrastructure exists at docks.
This operational model restricts sustained zero-emission travel duration, especially on longer voyages. However, it enables zero-emission operation in ecologically sensitive zones and UNESCO-protected fjord routes, providing
environmental benefits on critical segments of itineraries.
