Sperry Marine NAVITWIN IV 4994 Heading Management System (Gyro Compass Switchover Unit)
The Sperry Marine NAVITWIN IV 4994 Heading Management System is an advanced gyro compass switchover and heading management unit designed to monitor, control, and distribute heading information from multiple gyro compasses and magnetic compass sensors. It automatically selects the optimal heading source and provides reliable heading data to radar, ECDIS, autopilot, AIS, VDR, compass repeaters, and integrated bridge systems. Professionally tested and reconditioned units are available from WAVETECH MARITIME.
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