Japanese Partners Complete Land-based Operation of Marine Hydrogen Engines

Kawasaki Heavy Industries, Yanmar Power Solution, and Japan Engine Corporation have successfully conducted the world’s first land-based operation of marine hydrogen engines. The demonstration took place at Japan Engine’s headquarters factory, where a newly installed liquefied hydrogen fuel supply system was utilized.

Kawasaki Heavy Industries manufactured the new liquefied hydrogen fuel supply system, that stores and gasifies liquid hydrogen, supplying it at both high and low pressure to engines developed by the three companies. This enables testing across a range of applications, including low-speed two-stroke main propulsion engines, four-stroke auxiliary engines, and four-stroke main generator engines for electric propulsion ships.

Kawasaki Heavy Industries and Yanmar Power Solutions successfully demonstrated hydrogen combustion in medium-speed four-stroke engines, confirming stable operation at rated output, with the aim of reaching zero emissions. Development will continue to further refine engine performance.

Japan Engine is progressing with the development of a low-speed two-stroke hydrogen engine, scheduled to begin operation in Spring 2026.

A shared feature of all three engines is the ability to significantly reduce greenhouse gas emissions while maintaining redundancy through a dual-fuel system that can switch between hydrogen and diesel fuel as needed.

Following land-based demonstrations, the three companies plan to work with shipowners