A kit is provided which can be installed on a sailboat and used to selectively control the position of the tiller of the sailboat to allow the helmsman to leave the tiller unattended for a limited period of time. The kit is to be mounted on the transom of the sailboat and comprises: a mounting receiver adapted to be attached to the transom; an arm having a rearward end adapted to be attached to said mounting receiver and to extend forwardly therefrom and a forward end; and a saddle mount adapted to be attached to the forward end of said arm and having a u-shape adapted to receive a said tiller.

The present invention provides a tail rudder control system for a kayak which includes a tail rudder assembly, having a tail rudder, a swing mechanism for driving the tail rudder to rotate in the horizontal direction, a traction mechanism for driving the tail rudder to flip longitudinally for storage, and a guide wheel box for driving the swing mechanism and reset the tail rudder. Two pedal assemblies are in transmission connection with the swing mechanism through a steering traction line for driving the swing mechanism to act. A transmission assembly includes a first transmission wheel wound with a transmission traction line, a second transmission wheel wound with a reverse traction line. The second transmission wheel is driven by the first transmission wheel, and the reverse traction line is in transmission connection with the traction mechanism for driving the traction mechanism to act.

The present invention provides a tail rudder control system for a kayak which includes a tail rudder assembly, having a tail rudder, a swing mechanism for driving the tail rudder to rotate in the horizontal direction, a traction mechanism for driving the tail rudder to flip longitudinally for storage, and a guide wheel box for driving the swing mechanism and reset the tail rudder. Two pedal assemblies are in transmission connection with the swing mechanism through a steering traction line for driving the swing mechanism to act. A transmission assembly includes a first transmission wheel wound with a transmission traction line, a second transmission wheel wound with a reverse traction line. The second transmission wheel is driven by the first transmission wheel, and the reverse traction line is in transmission connection with the traction mechanism for driving the traction mechanism to act.

A stability control system configured for total vessel pitch axis control by fast symmetric deployment of devices, coupled with engine trim adjustments and total roll and heading control by differentially deploying devices to counter rolling motions while simultaneously adjusting engine steering position to counter the steering moment associated with device delta position. The system includes a software control strategy comprising (1) a command looping saturation strategy to reduce drag and/or maximize roll performance and provide real-time ride stability to deliver a consistent device delta position even when one or more devices is at their minimum possible bias; and (2) an autopilot heading strategy comprising a feedback loop with means of actuation provided by the engine steering/rudder position and at least one pair of devices capable of producing a yaw moment.

The invention is an air propelled boat that has a triangular shaped hydroplaning monohull which has surface adhesion characteristics by means of a concave bottom hull. The invention also has aircraft-like control surfaces (5,6) for safety and control at high speeds. The invention is the only monohull marine craft which produces aerodynamic lift without wings and has air based propulsion (4), air based control surfaces and a unique concave planing hull.

A kit is provided which can be installed on a sailboat and used to selectively control the position of the tiller of the sailboat to allow the helmsman to leave the tiller unattended for a limited period of time. The kit is to be mounted on the transom of the sailboat and comprises:

a mounting receiver adapted to be attached to the transom;

an arm having a rearward end adapted to be attached to said mounting receiver and to extend forwardly therefrom and a forward end; and

a saddle mount adapted to be attached to the forward end of said arm and having a u-shape adapted to receive a said tiller;

The invention is an air propelled boat that has a triangular shaped hydroplaning monohull which has surface adhesion characteristics by means of a concave bottom hull. The invention also has aircraft-like control surfaces (5,6) for safety and control at high speeds. The invention is the only monohull marine craft which produces aerodynamic lift without wings and has air based propulsion (4), air based control surfaces and a unique concave planing hull.