Hydraulic steering systems for boats, consisting of helm pumps, linear cylinders, rotary cylinders, engine powered pump units, AC and DC powered pump units, tank units in the nature of oil tanks, twin cylinders, control amplifiers, helm transmitters in the nature of electronic transmitters and power assist units in the nature of power steering; helm pumps, linear cylinders, rotary cylinders, engine powered pump units, AC and DC powered pump units, twin cylinders, all for use with boat hydraulic systems; DC boat motor units for use with boat auto pilot systems in the nature of electric navigational instruments

Auto pilot systems in the nature of electric navigational instruments for boats, consisting of control amplifiers, fluxgate compasses, heading sensors, DC boat motor units, feed back units in the nature of rudders, remote controllers, ethernet repeater units, all sold as a system; engine remote control systems for boats, consisting of electric valve actuator units, remote controller timer control unit, select switches in the nature of electric switches, foot switches in the nature of electric switches, sending units in the nature of transmitters, charging units in the nature of hydraulic accumulators, shift slave units in the nature of control valves, all sold as a system; control amplifiers, helm transmitters in the nature of electronic transmitters, and remote controllers, all for use with boat hydraulic systems; control amplifiers, fluxgate compasses, heading sensors, remote controllers, and ethernet repeater units, all for use with auto pilot systems in the nature of electric navigational instruments for boats; electric valve actuator units, remote controller timer control units, select switches in the nature of electric switches, sending units in the nature of control valves, charging units in the nature of hydraulic accumulators, all for use with boat engine remote control systems