TSUNEISHI SHIPBUILDING has successfully launched Japan’s first tugboat equipped with a hydrogen-powered internal combustion engine (ICE) on March 28, 2025, at the TSUNEISHI Factory. This pioneering vessel marks a significant step toward decarbonizing the maritime industry by integrating hydrogen dual-fuel ICE technology and high-pressure hydrogen gas storage.
Furthermore, the tugboat incorporates “JGreeX” green steel, produced by JFE Steel Corporation, for all its steel plates, significantly reducing CO₂ emissions during production and reinforcing the vessel’s environmental sustainability.
Hydrogen as a Clean Energy Source
Hydrogen fuel is a carbon-neutral energy source that produces no CO₂ emissions when burned. This tugboat is part of The Nippon Foundation’s “Zero Emission Ships Project,” which aims to develop next-generation zero-emission vessels.
Tugboats play a crucial role in assisting large vessels during low-speed maneuvers at ports. Due to their high power requirements, they must be highly maneuverable and equipped with powerful engines. This tugboat features twin 12-cylinder hydrogen-blended engines with a 4,400-horsepower output, using a combination of hydrogen and traditional marine fuels. This technology is expected to reduce CO₂ emissions by approximately 60% compared to conventional tugboats.
The vessel’s high-pressure hydrogen storage facility, capable of holding 250 kg of hydrogen gas, ensures that it maintains the same operational performance as traditional fuel-powered vessels. Additionally, in the unlikely event of a hydrogen fuel system failure, the tugboat can switch to traditional fuels, maintaining the same level of operational safety as conventional tugboats.
Green Steel for Sustainability
The tugboat is entirely constructed using JGreeX green steel, which offsets CO₂ emissions during steel production through a carbon credit system. This results in a 100% reduction in CO₂ emissions from steel plates, further contributing to the vessel’s environmental benefits.
Commitment to a Decarbonized Maritime Future
TSUNEISHI SHIPBUILDING continues to focus on reducing greenhouse gas emissions through various initiatives, including:
-
Developing and constructing vessels powered by alternative fuels such as methanol, LNG, and hydrogen.
-
Procuring and utilizing green steel materials for shipbuilding.
-
Enhancing ship designs to optimize fuel efficiency and reduce emissions.
Future Outlook
-
The successful launch of this hydrogen-powered tugboat represents a milestone for Japan’s maritime industry in reducing carbon emissions.
-
The adoption of hydrogen fuel and green steel aligns with global sustainability goals and Japan’s commitment to maritime decarbonization.
-
TSUNEISHI SHIPBUILDING is set to expand its innovation in alternative fuel vessels, shaping the future of eco-friendly shipping.
Did you subscribe to our daily Newsletter?
It’s Free Click here to Subscribe!
Source: TSUNEISHI SHIPBUILDING Co., Ltd
