Japan, April 22 -- On April 21, 2025, Japan Engine Corporation (J-ENG) announced the start of ammonia co-firing operation for the first Japanese-developed and manufactured commercial large, low-speed, two-stroke engine, model 7UEC50LSJA-HPSCR, intended for installation in an actual vessel, according to the company's release.The development is part of the "Green Innovation Fund Project: Next-generation Ship Development" by the New Energy and Industrial Technology Development Organization (NEDO). Since May 2023, J-ENG has conducted ammonia co-firing tests on a test engine, achieving stable operation at high ammonia co-firing rates and safe ammonia handling over approximately 18 months.The full-scale engine will undergo verification operations...