Japan recently launched its first hydrogen dual-fuel tug as part of the “Zero Emission Ships Project” sponsored by The Nippon Foundation. The vessel, equipped with a high-power output hydrogen dual-fuel internal combustion engine and a large-capacity high-pressure hydrogen gas storage system, aims to maintain operational performance while using hydrogen fuel. In case of system failure, the tug can operate on traditional marine fuels, ensuring safety similar to conventional vessels. Tsuneishi Shipbuilding, responsible for the launch, plans to utilize its expertise in constructing high-power hydrogen-fueled tugboats for future projects.
The tugboat, less than 300 gross tons in weight and 38 meters in length, is designed to be highly maneuverable and possess high engine output to assist in berthing and operational activities of large vessels. It is equipped with twin 12-cylinder hydrogen-blended engines, providing the necessary power for its functions. Operating with a combination of hydrogen and traditional marine fuels, the vessel aims to reduce carbon dioxide emissions by approximately 60% compared to conventional tugboats using only traditional fuels.
In a move towards sustainability, Tsuneishi is incorporating “JGreeX” green steel from JFE Steel Corporation into the construction of the tugboat. While many projects are exploring hydrogen fuel cells, Japan’s focus on internal combustion engines for hydrogen propulsion stands out. The Port of Antwerp-Bruges and CMB.TECH also launched a hydrogen-fueled tug, Hydrotug 1, in 2023, which is currently the largest vessel capable of operating solely on hydrogen. Demonstrations are underway in the port of Antwerp, showcasing the potential of hydrogen as a marine fuel.
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