MAN Energy Solutions has signed a Memorandum of Understanding (MoU) with Mitsui E&S Machinery Co., Ltd. (MES-M) and Mitsui O.S.K. Lines (MOL) regarding the low-speed, ammonia-fueled main engine that MAN Energy Solutions is currently developing. The MoU provides for keeping MOL and MES-M updated on MAN Energy Solutions’ progress in this regard, with the ultimate .