Autopilot System · Autopilot & Bridge Systems
The Sperry Marine NAVIPILOT 4000 Series is a self-tuning adaptive heading control system, so the following statements apply to the series. It comes in four configurations: BASIC per ISO 11674, TRACK adding track control per IEC 62065, HSC per ISO 16329 for high-speed craft, and TRACK HSC combining the last two. Track control needs a connection to VisionMaster FT ECDIS or a Sperry Marine integrated bridge system. The HSC versions add jet dead band compensation and a configurable hysteresis setting. The self-tuning function adjusts the control settings plus the gain and counter action of the rudder when load, trim or sea conditions change. Course changes are set by turn rate or turn radius, with a rudder limit as an alternative, and the steering strategy can be selected manually to suit the weather. The sheet states EC type approval by Germanischer Lloyd to MED 96/98/EC (Wheelmark).
Rudder feedback is plus/minus 10 V for plus/minus 120 degrees with a 2 kOhm potentiometer. Heading comes from two IEC 61162-1 inputs, a sine/cosine flux gate input is available, and the speed input is 200 p/nm or IEC 61162-1. Steering output can be DC solenoid valves at 12 VDC to 110 VDC and 2 A, AC solenoid valves at 24 VAC to 230 VAC and 1 A, or isolated proportional analogue outputs of plus/minus 10 V DC at up to 20 mA. CAN per IEC 61162-3 links remote units and the NAVIGUIDE 4000 manual steering system, and the VDR link is RS 422 at 9600 bps. Status and alarm outputs are potential-free contacts rated 2 A and 250 V.
Supply is 24 VDC (18 V to 36 V) at a maximum of 10 W. Operating temperature is -15 to +55 degrees C, installed protection is IP 32 to DIN 40050, and testing follows EN 60945. The steering control unit measures 151 x 392 x 425 mm (H x W x D) and weighs 3 kg.
Sources: Sperry Marine brochure NaviPilot 4000, checked 05.10.2026
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Verify heading inputs, rudder feedback, steering modes, changeover/interlocks, alarms, controller health and power supplies; conduct steering and autopilot functional tests under safe operating conditions.
Carry critical power supplies, control modules, feedback sensors, interface relays and operator-control components according to the installed system.
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