To provide a hydraulic power transmission for a vessel capable of securing a good vessel operating condition and navigating force at the time of navigation.
A pump shaft 53 of a hydraulic pump 13 is connected to a flywheel 17 and a cylinder block 55 is provided integrally or relatively rotatably in relation to a rotating cam 54 which integrally rotates with the pump shaft 53 through each plunger 56. The cylinder block 55 is integrally rotatably connected to a main torque transmitting shaft 23 through which the engine torque is transmitted to a propeller rotating shaft. On the basis of a discharge pressure of the hydraulic pump 13, a hydraulic motor 14 is rotatably driven, whereby a sub-torque transmitting shaft 41 connected to a motor shaft 72 is also rotatably driven. Therefore, the engine torque is also transmitted from the sub-torque transmitting shaft 41 to the propeller rotating shaft.
OUCHIDA TAKASHI
HITACHI JUNICHI
