Japan launches hydrogen engine for large ships

Japan has successfully tested a hydrogen-fuelled engine for large commercial vessels, achieving over 95% hydrogen co-firing. This breakthrough moves hydrogen from small ferries and short-sea vessels toward scalable, long-distance deep-sea shipping. (MarineInsight.com)

The low-speed, two-stroke engine - 6UEC35LSGH - ran stably at full load with high hydrogen co-firing. The engine is set for installation on a 17,500 DWT multi-purpose vessel, which will begin a three-year demonstration phase in 2028. A dedicated hydrogen fuel supply system is being developed to ensure safe and reliable operation.

At PBT, we monitor these developments closely. While hydrogen is not yet commercially viable at scale, the breakthrough underscores the importance of fuel flexibility and staying ahead of market trends.

PBT helps clients with flexible bunkering solutions, insights on alternative fuels, and guidance on evolving regulations.

Hydrogen adoption still depends on:

• Availability and cost of green hydrogen
• Safe onboard storage and handling
• Development of global bunkering infrastructure

Although hydrogen remains a future fuel, momentum is building. Staying informed ensures clients are ready for the next generation of marine fuels.