PROBLEM TO BE SOLVED: To provide an inwardly inclined upper bow shape, a vessel provided with an inwardly inclined upper bow shape, and a design method for the inwardly inclined upper bow shape further increasing reduction effect of in-wave resistance increase by the inwardly inclined bow shape which reduces in-wave resistance increase without spoiling smooth underwater travelling performance.SOLUTION: A bow shape of a hull 10 of a vessel is provided, in which: a frame line of a bow unit of the hull 10 has an inwardly inclined bow shape 20 which inclines inward above a static water level rising position where water surface rises, the position occurring when travelling smoothly underwater where there is no wave, by a sea speed set at the time of design as a representative speed for every vessel occurring at the bow unit in navigation of the vessel; and a water plane shape WL2 of a frame line further above the inwardly inclined bow shape 20 is a linear shape spreading backward from the bow unit when the hull 10 is viewed from above.SELECTED DRAWING: Figure 1

    【課題】平水中走行性能を損なうことなく波浪中抵抗増加を減少させるという内方傾斜船首形状による波浪中抵抗増加低減効果をさらに大きくする内方傾斜上方船首形状、内方傾斜上方船首形状を備えた船舶、及び内方傾斜上方船首形状の設計方法を提供する。【解決手段】船舶の船体10の船首形状であって、船体10の船首部のフレームラインの形状が、船舶の航行時に船首部に生じる船舶毎の代表的な速度として設計時に設定されている航海速力によって、波のない状態である平水中を走行する時に生じる、水面の盛り上がり位置である静的水位上昇位置から上方で内方に傾斜した内方傾斜船首形状20を有し、内方傾斜船首形状20のさらに上方のフレームラインの水線面形状WL2が、船体10を平面視した場合に船首部から後方に広がる直線的形状とした。【選択図】図1


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    Title :

    INWARDLY INCLINED UPPER BOW SHAPE, VESSEL PROVIDED WITH INWARDLY INCLINED UPPER BOW SHAPE, AND DESIGN METHOD FOR INWARDLY INCLINED UPPER BOW SHAPE


    Additional title:

    内方傾斜上方船首形状、内方傾斜上方船首形状を備えた船舶、及び内方傾斜上方船首形状の設計方法


    Contributors:

    Publication date :

    2018-10-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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





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