| 摘要 |
The present invention relates to propelling means for motor boats and especially auxiliary sailing yachts. More specifically, the invention relates to improved propelling means comprising a combustion engine driving a hydraulic oil pump, the pressurized oil from the said hydraulic pump being fed over a valve mechanism to a hydraulic motor, the shaft of which is bearing a conventional boat propeller. The thrust of the propeller is taken up by bearings arranged inherently in the hydraulic motor unit; thrust and torque are transferred to the boat hull via the hydraulic motor housing or a positively leak-proof propeller shaft casing which is fixedly attached thereto.
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