A stern shape having a stern duct 30, including a propeller 20 provided on a stern portion 15 of a ship's hull 10, and the stern duct 30 mounted in front of the propeller 20, wherein the ship's hull 10 has a V stern shape, a duct body 31 of the stern duct 30 is semicylindrical in shape, a rear edge of the duct body 31 has a shape including a parallel part 33 at a central position of its upper portion from which a semicircle substantially centering on an axis 21 of the propeller 20 is offset toward both left and right sides when the ship's hull 10 is forwardly viewed from a rear portion thereof, an inner radius of the semicircle is set in a range of 40% or more and 80% or less of a radius of the propeller 20, and a width of the parallel part 33 in a lateral horizontal direction of the parallel part 33 is set to 5% or more and 25% or less of a diameter of the propeller 20, and according to this configuration, a maximum transport efficiency can be obtained by an interference effect between the shape of the ship's hull and the propeller.


    Access

    Download


    Export, share and cite



    Title :

    SHIP AND STERN SHAPE HAVING STERN DUCT


    Additional title:

    SCHIFF- UND HECKFORM MIT ZUSTROMDÜSE
    NAVIRE ET FORME DE POUPE AYANT UN CARÉNAGE DE POUPE


    Contributors:

    Publication date :

    2020-03-18


    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



    SHIP AND STERN SHAPE HAVING STERN DUCT

    ICHINOSE YASUO / KASAHARA YOSHIKAZU / KANEKO AZUMI et al. | European Patent Office | 2017

    Free access

    STERN DUCT STERN ATTACHMENT METHOD OF DESIGNING STERN DUCT AND SHIP EQUIPPED WITH STERN DUCT

    KAWASHIMA HIDEKI / SAKAMOTO NOBUAKI / KUME KENICHI et al. | European Patent Office | 2021

    Free access


    STERN DUCT, STERN ATTACHMENT, METHOD OF DESIGNING STERN DUCT, AND SHIP EQUIPPED WITH STERN DUCT

    KAWASHIMA HIDEKI / SAKAMOTO NOBUAKI / KUME KENICHI et al. | European Patent Office | 2016

    Free access

    STERN DUCT, STERN ADDITIVE, STERN DUCT DESIGN METHOD, AND SHIP EQUIPPED WITH THE STERN DUCT

    KAWASHIMA HIDEMIKI / SAKAMOTO NOBUAKI / KUME KENICHI et al. | European Patent Office | 2015

    Free access