Ships of 500 gross tons or more constructed on or after September 1st, 1984 and ships of 1,600 gross tons or more constructed before September 1st, 1984 shall be fitted with a gyro compass. The gyroscope is mounted, ballasted and fitted so that it’s north south line always remains within the meridian through the influence of the earth’s diurnal revolution. Can be used as a sensor for the following types of navigation devices : Autopilots, Radar, Collision avoidance systems, Satellite navigation systems, Direction finders, etc. Here are some specifications as a reference when ordering.