Yanmar Power Technology, a subsidiary of Yanmar Holdings Co., has successfully carried out a significant land-based demonstration test of a pilot-ignition hydrogen engine for coastal vessels. This milestone achievement, reaching a rated output of 500kW, is a part of the Nippon Foundation's zero emission ship demonstration experiment. The engine operates by combining a small amount of diesel oil as pilot fuel with a premixture of hydrogen and air, leading to the world's highest hydrogen fuel ratio in operation. The company plans to continue trials with biofuel as pilot fuel and aims for class certification by 2026. The broader project focuses on developing hydrogen-powered, zero-emission ships and includes a hydrogen engine-compatible hybrid electric propulsion vessel. Yanmar is also working on a pilot-ignition 6-cylinder hydrogen engine and a spark-ignition engine for vessels. The initiative is part of Yanmar's efforts towards achieving zero emissions for coastal vessels by 2030, contributing to the global shift towards sustainable shipping and hydrogen energy.