Abstract: The invention discloses a retractable rudder device attached to the water jet nozzle of a watercraft. In a non-deployed condition, the rudders are latched in position and completely out of the water stream underneath the craft. When deployed, two rudders aligned with the axis of the steering nozzle, are rotated into position via springs and cables. The rudders pivot independently of each other, and will retract if contact with an underwater object is made or the craft is beached. A cable system connected to a control unit lowers the rudders into the deploy position. The cable system is actuated by a hydraulic cylinder using fluid pressure from the jet pump. The deployment rate can be varied by altering the fluid pressure in the hydraulic cylinder, and is a function of boat speed. Deployment of the retractable rudder system is determined by an electronic control system.

Abstract: The invention discloses a retractable rudder device attached to the water jet nozzle of a watercraft. In a non-deployed condition, the rudders are latched in position and completely out of the water stream underneath the craft. When deployed, two rudders aligned with the axis of the steering nozzle, are rotated into position via springs and cables. The rudders pivot independently of each other, and will retract if contact with an underwater object is made or the craft is beached. A cable system connected to a control unit lowers the rudders into the deploy position. The cable system is actuated by a hydraulic cylinder using fluid pressure from the jet pump. The deployment rate can be varied by altering the fluid pressure in the hydraulic cylinder, and is a function of boat speed.

Abstract: An improved ride plate apparatus for attachment to the lower aft portion of a personal watercraft, in place of the normal ride plate, and including a rudder mechanism pivotally connected to the ride plate together with steering linkage for coupling the rudder mechanism to the jet outlet nozzle so that, when the nozzle is rotated, with or without driving thrust applied, the rudder follows to effect a positive steering of the watercraft.