Simrad NAC-1 – Autopilot Computer Unit

Description

The Simrad NAC-1 Autopilot Computer is a 12V low-current course computer for compatible small-boat autopilot installations. It is designed to operate Simrad Pump-1 reversible hydraulic pumps and compatible mechanical cable-drive systems, making it suitable for correctly configured single-engine outboards and smaller vessels up to 9 m, or 30 ft. This is a course computer only and requires a separate display, heading sensor, steering drive, network, and feedback method where required.

The NAC-1 provides 8A continuous drive output and up to 16A peak output for short-duration steering loads. It connects through NMEA 2000 Micro-C and can integrate with compatible Simrad, Lowrance, or B&G multifunction displays. Virtual Rudder Feedback may be suitable for some outboard and sterndrive hydraulic systems, but physical feedback may still be needed depending on steering configuration.

Key Specifications

• 12V low-current Simrad autopilot course computer for compatible small-boat steering systems.
• Designed for compatible single-engine outboard installations up to 9 m, or 30 ft.
• Supports Simrad Pump-1 reversible hydraulic pumps and compatible mechanical cable-drive systems.
• Provides 8A continuous drive output and up to 16A peak output for short-duration loads.
• Connects through NMEA 2000 Micro-C networking.
• Requires a compatible Simrad, Lowrance, or B&G display, heading sensor, steering drive, and complete autopilot system.
• Virtual Rudder Feedback may be suitable on certain compatible hydraulic installations.
• Uses an IPX5-rated enclosure and requires protected bulkhead or vertical internal mounting.

System Integration

The NAC-1 does not include a display, heading sensor, hydraulic pump, mechanical drive, rudder-feedback sensor, or NMEA 2000 backbone. Select a drive based on the boat’s actual steering type, cylinder volume where applicable, steering load, power requirements, and 8A continuous output limit.

Do not use the NAC-1 for a steering drive that requires higher continuous current than the unit can supply. Larger hydraulic systems, high-current linear drives, rotary drives, and commercial steering arrangements typically require a higher-capacity course computer such as the NAC-2 or NAC-3.

Installation Considerations

Mount the NAC-1 in a protected accessible location with sufficient room for power, motor, NMEA 2000, and any feedback connections. Use correctly sized wiring and appropriate circuit protection for the selected drive. Mount the heading sensor clear of magnetic interference, configure drive direction and feedback correctly, and complete system commissioning plus sea-trial verification.

Before Ordering

Confirm a compatible single-engine outboard or small-vessel steering system up to 30 ft, selected Pump-1 or approved cable drive, drive load within 8A continuous capacity, 12V supply, compatible display, heading sensor, NMEA 2000 network, physical-feedback or VRF suitability, protected mounting location, circuit protection, and complete autopilot-system components before purchase.