An underwater propulsive device of a watercraft including a flotation unit on which a user rides. The propulsion device includes: a hollow body coupled to the flotation unit through a strut and extending in a propulsive direction of the watercraft, the inside of the hollow body being divided into a first compartment and a second compartment; a motor in the first compartment; a propeller in the second compartment; and a power transfer shaft extending in the propulsive direction and connecting the motor and the propeller to each other. The first compartment has a waterproof structure. The second compartment has a water inlet disposed closer to the bow than the propeller is and extending along a circumference of the power transfer shaft and a water jet outlet disposed at a stern-side end of the second compartment. The propeller is smaller than the first compartment in diameter.


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    Title :

    Underwater propulsive device of watercraft


    Contributors:

    Publication date :

    2021-08-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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