VESSEL WITH LITTLE WIND RESISTANCE

• Main Authors: ASANUMA NORIMICHI, IKEDA TAKEHIRO, TANAKA YOSHIKAZU, TANIGUCHI GO, KIMURA KOYU
• Format: Patent
• Language: English; Japanese
• Published: 12.12.2019
• Subjects: EQUIPMENT FOR SHIPPING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; TRANSPORTING

To provide a vessel with little wind resistance reducing influence from oblique head wind, generating lift force on a water surface construction formed by the hull or a top structure and freight, obtaining propulsion force from components in front to back direction of the hull of this lifting force, and thereby improving the propulsion performance of the vessel.SOLUTION: A vessel is composed so that a virtual point P2(z) is in a position so that a counter line Ls(Z) which is a length 50% of a counter line Ls (Z) of a horizontal section Sh(z) or more and less than 100% is within a fan-shaped area (Rα) when the virtual point P2(z) which is pivot of this fan-shaped area Rα is moved from front to back along a hull center line Lc, when the fan-shaped area Rα is in between a first inclining line L1 extending at a first angle α1 which is 50 degrees to bow direction Lc in the front to back direction X and a second inclining line L2 extending at a second angle α2 which is 80 degrees, in each horizontal surface Sh(z) in a first range Rx1 on stern side of water surface structures 2, 20 as well as on top and bottom first ranges Rz1.SELECTED DRAWING: Figure 1 【課題】斜め向かい風の影響を低減するとともに、船体又は上部構造物と積載貨物で形成する水面上構成物で揚力を発生し、この揚力の船体の前後方向の成分から推力を得ることできて、船舶の推進性能を向上できる風圧抵抗の少ない船舶を提供する。【解決手段】水面上構造物２、２０の船尾側第１範囲Ｒｘ１かつ上下第１範囲Ｒｚ１における各水平断面Ｓｈ（ｚ）で、前後方向Ｘの船首方向Ｌｃに対して５０度の第１角度α１で延びる第１傾斜線Ｌ１と、８０度の第２角度α２で延びる第２傾斜線Ｌ２との間を扇形領域Ｒαとして、この扇形領域Ｒαの要の仮想点Ｐ２（ｚ）を船体中心線Ｌｃに沿って前後移動させたときに、水平断面Ｓｈ（ｚ）の外形線Ｌｓ（Ｚ）の長さの５０％以上１００％以下の長さの外形線Ｌｓ（Ｚ）が扇形領域（Ｒα）に入るような仮想点Ｐ２（ｚ）の位置があるように構成する。【選択図】図１