A Japanese coastal tanker has completed a two-hour demonstration voyage powered by a hydrogen-fuelled engine, marking what the Nippon Foundation has described as the world’s first carbon-neutral demonstration sailing using the technology.
The 4,500-gt Kikou Maru travelled approximately 33 kilometres through Osaka Bay on 25 September, operating its hydrogen-fired engine throughout the voyage. The demonstration was carried out under the Nippon Foundation’s Zero-Emission Ship Project, an initiative aimed at accelerating the development and adoption of zero-emission technologies for Japan’s domestic shipping sector as the country works towards carbon neutrality by 2050.
The voyage represents a test of hydrogen as a potential marine fuel for coastal vessels, particularly in a sector where operators are seeking alternatives to conventional fossil fuels while maintaining the range, reliability and safety required for commercial operations.
The engine employs a pilot-ignition system, allowing hydrogen to be used as the primary fuel for propulsion.
According to the Nippon Foundation, the demonstration reduced carbon dioxide emissions by approximately 1.2 tonnes compared with operating the tanker on conventional fossil fuels.
The result provides an early indication of the potential emissions benefits of hydrogen propulsion in domestic shipping, although wider commercial deployment will depend on factors including fuel availability, bunkering infrastructure, vessel conversion costs and operational safety.
The Kikou Maru demonstration is part of a broader effort by Japan to develop commercially viable zero-emission vessels for domestic trade.
The Nippon Foundation said further demonstration voyages involving the other two consortia participating in the Zero-Emission Ship Project are planned by the end of fiscal 2026.
AloJapan.com