W series engine widely used for the ship and yacht more than 85m such as fishing boat, cargo ship etc.
K series engine widely used for the cargo ships and transportation ships no more than 75m etc.
G series engine widely used for the patrol yacht and fishing boats about 60m etc.
E series engine widely used for the inner river cargo ship and industrial ship etc.
D series engine widely used for the smaller fishing boats etc.
H series engine widely used for the high speed boat and passenger boat etc.