PURPOSE: To discharge bilge-water in a boat without any deterioration in steering stability by arranging a bilge-water suction pump communicating to a bilge part in the boat and hitting a surface facing to a space outside the boat with the jet stream of the bilge-water discharged from that pump.
CONSTITUTION: A bilge-water suction pump 29 is fixed on the upper surface of a boat bottom plate 24 fixed to a water jet unit 13 and on one side part of that water jet unit 13. The entrace port part of a water passage of the bilge- water suction pump 29 is communicated to the inner surface of a fixed blade dust part 19C through a communicating pipe 33. The suction pump 29 sucks the bilge-water in the bilge part 38 in the boat through a communicating pipe 37 and discharges it from the water passage through a discharge pipe 34. Thus, the bilge-water in the boat can be discharged without any deterioration of steering stability.
OKUZAWA KAZUHIRO
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