This ship with a small duct is characterized in having a propeller (10) attached to a stern of a hull (1), and a duct (20) attached to the front of the propeller (10), the hull (1) being a small duct having a propeller load condition in actual sea areas of 1.0 or greater and an eddy resistance of 10% or greater, and the diameter of the duct (20) being between 20% and 50% inclusive of the diameter of the propeller (10). Therefore, a hull (1) that yields a horsepower-reducing effect is specified from the relationship between eddy resistance and the propeller load condition, and the shape of the propeller (10) is contrived and a small duct (20) is placed near the front of the propeller (10) as an energy-saving device that has the characteristics of both a large duct and a small duct, whereby cavitation is suppressed and interference with the small duct (20) is utilized to optimize the radial load distribution of the efficiency-governing propeller (10) in actual sea areas where the load rate increases.


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    Title :

    SHIP WITH SMALL DUCT AND METHOD FOR ASSESSING APPLICATION OF SMALL DUCT ON SHIP


    Contributors:

    Publication date :

    2015-10-21


    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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