| 摘要 |
PROBLEM TO BE SOLVED: To provide an air exhaust device of a small planing vessel capable of protecting an engine by avoiding intrusion of water to the engine even at the time of rolling of either of the left and the right of the small planing vessel. SOLUTION: A front part of a water lock 8 is bulged to the side of an impeller shaft, an exhaust air inlet 8b of an exhaust air hose 9 is opened to a bulged part 8a and an exhaust air outlet 7a to the inside of the water lock 8 of an exhaust pipe 7 is offset to the outside of the exhaust air inlet 8b on an exhaust air device of a small planing vessel 1 constituted by having an engine 3 arranged in an engine room and a jet propeller 4 to be driven by the engine 3 through the impeller shaft 10, storing a part of the jet propeller 4 in a pump chamber 11 formed by recessing a part of a hull 2, arranging the exhaust pipe 7 derived from the engine 3 either of left and right against a center of the impeller shaft, connecting at least its rear part to the water lock 8 arranged on the side of the pump chamber 11, extending the exhaust air hose 9 derived from the water lock 8 to the opposite side of the water lock 8 over the center of the impeller shaft and opening it to the outside of the engine room.
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