| 摘要 |
PROBLEM TO BE SOLVED: To provide a hull frictional resistance reduction device capable of efficiently making a bubble flow for reducing hull frictional resistance flow rearward along an outer face of a bottom shell by synergistic action of gas which is pressed into water from bottom part openings without bottom plates of gas chambers in a bow bottom part and relatively flows rearward and gas holding plates along bottom both side parts, without providing a bubble generation part, such as a conventionally used bottom plate having a large number of small holes and a mesh, as a means for making a bubble flow flow rearward along a bottom lower face during sailing. SOLUTION: In the bow bottom part, the gas chambers 2a capable of emitting gas downward are aligned in the beam direction, and a high-pressure gas supply source 8 connected to the gas chambers 2a via gas flow rate control parts D and piping 3 is provided. Inside of the gas chambers 2a is opened into water via the bottom part openings without bottom plates, and baffle plates 16 receiving jets from the piping 3 are provided inside the gas chambers 2a. COPYRIGHT: (C)2008,JPO&INPIT
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