... engines and crosshead engines respectively. Last of all, all diesel engines may be separated into three groups in accordance with their speed, low-speed, medium-speed and highspeed diesel engines. ... high-speed diesel engines generally to be adopted for warships while low-speed diesel engines for merchant ships. In nature a marine diesel engine is one of the internal combustion engines. Anyone ... construction of diesel engine parts, we should first know something about the several classes into which diesel engines may be divided. It's quite O. K. for us to classify diesel engines in...