Pontoon hulls for providing lower friction surfaces on the hulls to increase the efficiency of pontoon boats moving through the water. The inner side walls between the pontoons can be provided with a plurality of longitudinal vents. The vents can have open ends facing the stern and opposite closed ends facing the bow. As the water craft moves forward, a bubbling effect can occur in low pressure zones about the stern facing open ends of the vents to reduce the water surfaces in contact with the pontoon hull surfaces. A plurality of open rear ends of the vents can be arranged in series and in parallel on left inner sides of the left pontoon, and on right inner sides of the right pontoon.


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    Title :

    Tunnel vent venturi for water craft


    Contributors:

    Publication date :

    2019-12-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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