To provide a ship propulsion system and a control method of a ship propeller, capable of effectively laterally moving a ship on the basis of an operation instruction by an operation part, in the ship mounted with propellers of at least four machines.
A control part individually controls the propulsion direction, propulsive power and a steering angle of a forward-backward advance of a plurality if ship propellers 3a-3d so that a point of application P1 of first resultant force F1 is positioned backward more than a point of application P2 of second resultant force F2 when instructing operation in the lateral direction from the operation part. The first resultant force is resultant force of the propulsive power generated by a first port side propeller 3a and a first starboard propeller 3c. The second resultant force is resultant force of the propulsive power generated by a second port side propeller 3b and a second starboard propeller 3d.
| WO/2019/059965 | PERSONAL WATERCRAFT AUTO-RETURN SYSTEM |
Yukio Ono
Yamashita