A ship has a main propeller 2 which can move the ship forward and reverse by normal rotation, reverse rotation or by changing the pitch angle. A drive unit drives the main propeller 2. A rudder 3 changes the course of the ship. At least one pod propulsion unit 10A, 10B is provided. As a result, the support mechanism and the turning mechanism of the pod propulsion unit, arranged separate from the main propeller, can be simplified and cost can be reduced.