1. The main engine of the ship is the main propulsion device of the ship. At present, most ships use diesel engines, whose function is to output a shaft with a propeller to propel the ship, just like a gasoline engine in a car drives a car.

2. The function of the generator on the ship is to provide the electric energy on the ship, and all the electricity is generated by the generator.

3. The motor is driven by electricity to drive the equipment on board, such as water pump. . . . . . .