SIMRAD NAC-3 COURSE COMPUTER 000-13250-001 Black Box Autopilot f/ AP44 ControlSIMRAD NAC 3 COURSE COMPUTER 000 13250 001 Black Box Autopilot f AP44 Control Brand new with full warranty. You will receive what you can see in the photos. The NAC 3 Autopilot Computer is the brains behind your B&G autopilot system. It contains the electronics needed to operate a hydraulic steering pump or mechanical drive unit, while also interfacing with other components including heading sensors and rudder feedback units. The NAC 3 was designed