A steering gear for a boat includes a steering mechanism that moves a rudder, and a driving source. The steering mechanism has: a housing that is fixed to a hull; an output shaft that is rotatably supported by the housing; a first conversion mechanism that is provided inside the housing and converts power from the driving source into rotation of the output shaft; and a second conversion mechanism that is provided outside the housing and converts rotation of the output shaft into motion of the rudder.

A steering gear for a boat includes a steering mechanism that moves a rudder, and a driving source. The steering mechanism has: a housing that is fixed to a hull; an output shaft that is rotatably supported by the housing; a first conversion mechanism that is provided inside the housing and converts power from the driving source into rotation of the output shaft; and a second conversion mechanism that is provided outside the housing and converts rotation of the output shaft into motion of the rudder.

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 helm for controlling a marine vessel with instruments and a steering device. The marine vessel has forward and aft ends defining a longitudinal center line therebetween. The helm includes a base that extends upwardly from a floor of the marine vessel to a top of the base. The base supports the steering device. A cover is pivotally coupled to the top of the base, where the cover is pivotable away from the longitudinal center line between an open position and a closed position. Wiring for the instruments is accessible from the top of the base only when the cover is in the open position.

A method to fill hydraulic oil in hydraulic steering systems for boats. The method uses a closed system to reduce mess and waste, but does not require power and can be performed by a single operator. A bleed lock is secured to a ram's bleeders and hydraulic oil fed to a helm. By rotating a boat's steering wheel and moving the motor, air will flow out of the system into the bottle and hydraulic oil will flow into the system.

The propulsion unit comprises an electric actuator and a tiller coupled the electric actuator. The electric actuator includes a housing having a first end and second end. There is an output shaft fully received within the housing. The output shaft includes a coupling portion and a tiller is coupled the coupling portion of the output shaft such that such that a line of action of the actuator is in the same plane as the tiller.

The propulsion unit comprises an electric actuator and a tiller coupled the electric actuator. The electric actuator includes a housing having a first end and second end. There is an output shaft fully received within the housing. The output shaft includes a coupling portion and a tiller is coupled the coupling portion of the output shaft such that such that a line of action of the actuator is in the same plane as the tiller.

A boat includes a planing hull, a propeller, a main rudder, and a pair of flanking rudders. The planing hull has port and starboard sides, a transom, a hull bottom, and a centerline running down the middle of the boat, halfway between the port and starboard sides. The propeller is positioned forward of the transom and beneath the hull bottom. The main rudder is positioned aft of the propeller. The main rudder has a rotation axis about which the main rudder rotates. The flanking rudders are positioned forward of the propeller. One of the flanking rudders is positioned on the port side of the centerline, and the other flanking rudder is positioned on the starboard side of the centerline.

A boat includes a planing hull, a propeller, a main rudder, and a pair of flanking rudders. The planing hull has port and starboard sides, a transom, a hull bottom, and a centerline running down the middle of the boat, halfway between the port and starboard sides. The propeller is positioned forward of the transom and beneath the hull bottom. The main rudder is positioned aft of the propeller. The main rudder has a rotation axis about which the main rudder rotates. The flanking rudders are positioned forward of the propeller. One of the flanking rudders is positioned on the port side of the centerline, and the other flanking rudder is positioned on the starboard side of the centerline.