Abstract: A watercraft includes a jet propulsion system having a venturi unit and an impeller. The impeller is rotatable in a forward direction for propelling water rearward out of the venturi unit, and a reverse direction for propelling water forward through the venturi unit. A bailer-siphon system of the watercraft includes a fluid conduit defined in part by a valve, the fluid conduit having a fluid inlet in the motor compartment and a fluid outlet at the venturi unit. The valve is operable between an open position in which the valve fluidly connects the fluid inlet to the fluid outlet, and a closed position in which the valve fluidly disconnects the fluid inlet from the fluid outlet. The valve is in the open position when the impeller rotates in the forward direction. The valve is in the closed position when the impeller rotates in the reverse direction.

Abstract: A jet propulsion system for a watercraft includes a duct defining an inlet, a venturi unit, an impeller housing disposed between the inlet and the venturi unit, and an impeller disposed within the impeller housing. The impeller is rotatable in a forward direction and a reverse direction. The venturi unit includes a venturi conduit and at least one door connected thereto. The venturi conduit has a peripheral wall defining at least one aperture. The at least one door is movable between a closed position when the impeller rotates in the forward direction, and an open position when the impeller rotates in the reverse direction. In the closed position, the at least one door closes the at least one aperture. In the open position, the at least one door opens the at least one aperture such that water flows into the venturi conduit via the at least one aperture.

Abstract: A trim system for a watercraft has a nozzle pivotable about a trim axis, a trim actuator operatively connected to the nozzle, at least one sensor for sensing at least one operating condition of the watercraft, a control unit electronically connected to the at least one sensor for receiving a sensor input signal indicative of the at least one operating condition. In a first trim control mode, the control unit controls the trim actuator to pivot the nozzle about the trim axis within a first range of trim angles. In a second trim control mode, the control unit controls the trim actuator to pivot the nozzle about the trim axis within a second range of trim angles. The first range of trim angles is greater than the second range of trim angles. A watercraft having a trim system and a method of controlling the trim are also disclosed.

Abstract: A trim system for a watercraft has a nozzle pivotable about a trim axis, a trim actuator operatively connected to the nozzle, at least one sensor for sensing at least one operating condition of the watercraft, a control unit electronically connected to the at least one sensor for receiving a sensor input signal indicative of the at least one operating condition. In a first trim control mode, the control unit controls the trim actuator to pivot the nozzle about the trim axis within a first range of trim angles. In a second trim control mode, the control unit controls the trim actuator to pivot the nozzle about the trim axis within a second range of trim angles. The first range of trim angles is greater than the second range of trim angles. A watercraft having a trim system and a method of controlling the trim are also disclosed.