Electro mechanical and electro hydraulic steering systems for ships consisting of electric motors, electric pumps, cylinders, valves, hoses, electrical amplifiers, potentiometers, compasses and microprocessors, sold as a unit; Manual and power steering systems comprised of follow-up lever controllers, follow-up wheel controllers, rudder order indicators, steering failure alarms, starter panels, local control and bridge disconnect panels, radial carrier bearings and packing glands, steering gear tillers, rotary vane steering gears, all relating to marine vessels; dynamic positioning systems, comprised of computer hardware, computer software control systems, feed forward control systems, flat panel touch-screens, wind sensors, hydro acoustic sensors, control stations, vertical reference sensors, housing units, uninterruptible power supply, alarm printers, global positioning systems, rudders, propellers, thrusters, input-output boxes, all used to monitor, control, and maintain, the position of floating or stationary offshore vessels; automation systems and autopilot systems comprised of compasses, electronic control circuits, control panels and hydraulic or electrical drive to the ship's steering system, all relating to marine vessels