Dalian Marine Diesel

Dalian Marine Diesel Co., Ltd. (DMD) is a Chinese builder of low-speed two-stroke marine main engines located in Dalian, Liaoning province. Established on 1 July 1977, it was formerly part of China Shipbuilding Industry Corporation (CSIC) and, following the merger of CSIC and CSSC, now belongs to the CSSC group through CSSC Engine Co., Ltd.

DMD builds low-speed diesel and dual-fuel engines under licence and describes itself as producing the whole series of MAN (now Everllence) B&W and WinGD engines. Its output goes mainly to Chinese shipyards for deep-sea merchant tonnage such as container ships, tankers and bulk carriers.

In March 2024 DMD delivered the world's first WinGD 6X62-S2.0 main engine with high-pressure SCR (HPSCR), meeting IMO Tier III, a shorter-stroke design aimed at a wide range of ship types.