Patent ID: 6960105
Filing Date: 2005-11-01
Classification: B63B,B63H,F02B

Abstract:
1. A jet propulsion boat, comprising: a hull, said hull being advanced by generating a jet water stream by a jet propulsion unit driven by an engine and discharging the jet water stream through a nozzle, said hull being turnable to the left and the right by changing a direction of the nozzle by a steering handle; and a control unit, said control unit controlling a number of engine revolutions per minute when a throttle of the engine is closed and when said control unit determines that the engine has been rotating at more than a prescribed number of revolutions per minute and the throttle has been open at more than a prescribed opening for a prescribed time period, wherein a delay time for delaying a time for starting the controlling of the number of engine revolutions per minute is provided by the control unit.