| 摘要 |
PURPOSE: A rigid inflatable boat having a tube for keeping a stable position is provided to efficiently restrict excessive trim, called jumping, on a hull during high-speed running. CONSTITUTION: A rigid inflatable boat comprises a hull(10), a tube(30) which is provided on the upper side of the hull in order to generate additional buoyancy, and protrusions(50) which are projected from the underside of both rear sides of the tube.
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