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The SPERRY Marine Autopilot 4000 uses advanced ship steering control network technology to steer a ship safely and efficiently. The innovative NAVIPILOT 4000 can tune itself to adapt automatically to the ship’s load characteristics and weather conditions.
The highly reliable NAVIPILOT 4000 ensures continuous self-tuning adaptation for accurate steering and efficient fuel consumption, which is unique to all other autopilots in the marine industry.
Each single rudder activity increases fuel consumption and cost. For this purpose, the NAVIPILOT 4000 can adapt automatically to the current weather and sea conditions.
| Component | Part Number | Operating Voltage | Power Consumption |
| Control Unit | 056580-0000-000 |
$18\text{V DC}$ to $36\text{V DC}$ (Dual 24V inputs) | Approx. $15\text{W}$ |
| Interface Unit (APU) | 056581-0000-000 |
$18\text{V DC}$ to $36\text{V DC}$ (Dual 24V inputs) | Approx. $25\text{W}$ (nominal) |
| Steering Outputs | — |
• Proportional voltage: $\pm 10\text{V DC}$ • Proportional current: $4\text{–}20\text{ mA}$ • Solid-state solenoid drives (24V DC, max 5A) • Potential-free relay contacts |
— |
| Interface Category | Specifications & Supported Sentences |
| Heading Inputs (x4) | Up to 4 independent heading inputs via IEC 61162-1 (NMEA 0183) or CAN bus ($xxHDT, $xxTHS, $xxHDG, $xxHDM) |
| Supported Sensors | Sperry NAVIGAT Gyrocompass series (NAVIGAT X MK 1, 100/200/300), magnetic compass via fluxgate/sensor coil, satellite compass |
| Speed Inputs (x2) | Speed Over Ground (SOG) & Speed Through Water (STW) via NMEA 0183 ($xxVBW, $xxVHW, $xxVTG) or pulse log |
| Track Steering Interface | IEC 62065 Category C Track Control via VisionMaster / ECDIS ($xxHTC, $xxHSC, $xxAPB) |
| VDR / Output Data | Isolated RS-422 NMEA 0183 ($APHTD, $APRSA, $HEHDT) at $1\text{Hz}$, $10\text{Hz}$, or $20\text{Hz}$ |
| Parameter | Specification |
| Adaptive Control Algorithm | Self-tuning continuous adaptation to changing vessel displacement, draft, speed, trim, and weather/sea state conditions |
| Steering Control Modes | AUTO (Heading Control), STBY (Manual Helm), TRACK (Category C Track Control via ECDIS), DODGE, TILLER |
| High-Speed Craft (HSC) | Certified for high-speed vessels up to 70 knots (includes jet-drive dead-band compensation) |
| Safety Features | Dynamic speed-dependent rudder limits, Rate of Turn (ROT) limit control, heading difference monitoring between sensors, off-course alarm |
| Rudder Feedback Unit | Potentiometric feedback unit (053531 series) |
| Parameter | Control Unit (056580) | Interface Unit (056581) |
| Dimensions (H x W x D) | $144 \times 288 \times 96\text{ mm}$ | $360 \times 240 \times 120\text{ mm}$ |
| Console Cut-out | $278 \times 135\text{ mm}$ | — |
| Weight | $1.8\text{ kg}$ | $4.2\text{ kg}$ |
| Enclosure Rating | IP67 (Front panel when flush-mounted) | IP22 |
| Operating Temperature | $-15^\circ\text{C}$ to $+55^\circ\text{C}$ | $-15^\circ\text{C}$ to $+55^\circ\text{C}$ |
| Storage Temperature | $-25^\circ\text{C}$ to $+70^\circ\text{C}$ | $-25^\circ\text{C}$ to $+70^\circ\text{C}$ |
Manufacturer Part Number: 056580 / 056581 System
Country of Origin: Germany (Hamburg)
Type Approvals: MED Module B & D (Wheelmarked), DNV, ABS, LR, RMRS, CCS, ClassNK
Standards Compliance:
Heading Control System (HCS): ISO 11674, ISO 16329
Track Control System (TCS): IEC 62065 (Category C)
General Marine Standards: IEC 60945, IEC 61162-1/-2, IMO Res. A.342(IX), MSC.64(67) Annex 3, MSC.191(79)
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