Retractable or storable thruster using a trapezodidal deformably

Rotational electric bow thruster for a marine propulsion system

Rotational jet-drive bow thruster for a marine propulsion...

Rotationally retractable propeller

Screen system for marine thrusters

Shaftless radial vane rotary device and a marine propulsion...

Ships steering gear

Side thruster for small boats

Side thruster of a boat

Side thruster performance improvement with power...

Side thruster performance improvement with speed control

Small boat bow thruster

Small boat thruster kit

Small watercraft automatic steering apparatus and method

Spool valve

Steering control system for ships

Steering cylinder with integral servo and valve

Steering device

Steering gear for ships

Steering mechanism