Ship propulsion plant with a main and an auxiliary propeller

摘要

The invention deals with a ship propulsion plant which has a main propeller driven by a main engine and a tandem propeller. The overall propulsion efficiency and the rudder action are thereby improved. A portion of the total mechanical power of the main engine or a shaft-driven generator is fed via an electric wave to the three-phase motor of the tandem propeller so that, during starting or reversing as a function of the signal from the cruise control-signal generator, the shaft-driven generator is given a shock excitation until the three-phase motor is started or reversed and the excitation is regulated to U/f = constant. <IMAGE>