Japan introduced the world's first hydrogen engine for large ships, Japan. Osaka introduced the world's first hydrogen engine for large commercial vessels. According to the developers, it reduces CO2 emissions by more than 95% compared to conventional heavy fuel engines. The engine will be installed on a multipurpose vessel built by Onomichi Dockyard. Delivery company Mitsui O.S.K. Lines will begin panel trials in April 2028, based on a high-pressure direct lighting system that ensures stable hydrogen combustion. For safety, hydrogen supply lines were made double. The development comes from the goal of the International Maritime Organization to achieve zero greenhouse gas emissions by 2050. Hydrogen and ammonia are seen as the next generation fuel, despite high cost, complexity and safety concerns. @WarPeace And You.