components of marine auto pilots, namely, mechanical drive units, hydraulic pumps, sprockets, chains, shafts, flex shafts, and electric motors

marine auto pilots; electronic apparatus for coupling electronic geographic position indicators to marine auto pilots; electronic apparatus for connecting marine guidance equipment to computer networks; rudder angle indicators; speed logs; components of marine auto pilots, namely, magnetic and hall-effect compasses, compass enclosures, compensating magnets and ferrites for compasses, heeling tubes, junction boxes, remote controls, rudder angle indicators, rudder angle encoders, limit switches, rectifier units, solenoids, relays, [ electric motors, ] and controllers; wind vanes and wind direction indicators