Gotland Shipping's Hydrogen-Ready Ferry Horizon X Begins Construction, Siemens Combined Cycle Efficiency Nears 50%

en.Wedoany.com Reported - Gotland Shipping has started construction of the hydrogen-ready ferry Horizon X at Austal shipyard. The ship is 130 meters long with a gross tonnage of 18,300 tons, capable of carrying 1,500 passengers and 400 vehicles at a speed of 30 knots. It is expected to be delivered in the summer of 2028.

Horizon X will initially use liquefied natural gas and diesel fuel, with a design that allows for a future transition to 100% hydrogen power. Jonas Moberg, head of newbuilding at Gotland Shipping, stated that maintaining a speed of nearly 30 knots on the route makes battery solutions unfeasible, leading the team to choose a fuel path with hydrogen as the long-term goal.

The propulsion system utilizes a Siemens Energy combined cycle unit with a total shaft power of 36.4 megawatts and an efficiency approaching 50%. Moberg noted that the combined cycle is a necessary condition for commercial viability. Michael Welch from Siemens Energy pointed out that the part-load efficiency of the SGT-400 platform plays a crucial role in ferry operations.

The hydrogen-ready design outlines a clear transition path. Moberg emphasized that hydrogen refueling requires supporting port storage and transmission facilities. The capital cost of Horizon X is approximately 25% higher than that of conventional vessels.

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