NAC-2 Autopilot Core Pack
Best autopilot solution for owners of boats under 35 feet.
The Simrad NAC-2 Autopilot Core Pack delivers essential components for a reliable autopilot system, featuring the NAC-2 autopilot computer, RF25N rudder feedback unit, and Precision-9 compass. Designed for rudder-steered boats up to 10 meters (35 feet), it integrates seamlessly with various drive units and Simrad controllers or multifunction displays. Installation is simplified with plug-and-play connectors and NMEA 2000® networking. The system offers auto-tuning for optimal performance and continuous compass calibration for enhanced accuracy, ensuring dependable steering assistance.
$1749.00
Owner Satisfaction
4.7
/ 5
Category Rank
3
/ 238
#3 in Marine Chartplotters & GPS
Price vs Category Average
-8%
Below average
Operating temperature
2555
/ -°C to +°C
Who it's for
- Boaters seeking effortless setup with existing marine electronics
- Owners of smaller vessels prioritizing space and battery efficiency
- Captains demanding precise steering performance in challenging sea conditions
Who should skip it
- Owners of large yachts requiring high-capacity steering systems
- Budget-conscious buyers wary of hidden costs for essential components
- Beginners intimidated by complex calibration and advanced technical settings
Performance breakdown
Heading Accuracy
The Precision-9 compass delivers rock-solid heading data for precise navigation.
Installation Simplicity
Plug-and-play NMEA 2000 networking makes setup straightforward for most boaters.
System Integration
Seamlessly connects with existing Simrad displays and diverse marine drive units.
Steering Reliability
Auto-tuning capabilities ensure consistent performance across varying sea conditions.
Build Durability
IPX7 waterproof rating provides essential protection against harsh marine environments.
Vessel Compatibility
Optimized specifically for smaller rudder-steered vessels under 10 meters.
Key Specs
Operating temperature
-25°C to +55°C
Waterproof Rating
IPX7
Weight
0.6 kg
Dimensions
180mm width, 57mm height
Power supply
9-31.2 V DC
Drive performance
8 A continuous, 16A peak
Network
1x Micro-C (NMEA2000)
Feedback
Variable voltage/resistive 0-5V
Features
- High-current NAC-2 autopilot computer
- Precision-9 compass for accurate heading
- RF-25 rudder feedback unit
- Ideal for vessels up to 10M (33')
- Supports low-current hydraulic/mechanical drives
- Includes NMEA 2000 starter kit
- Auto-tuning and calibration
- Easy plug-and-play installation
What customers say
Customers overwhelmingly praise the Simrad NAC-2 Autopilot Core Pack for its exceptional steering accuracy and reliability, especially in rough seas. Reviewers value its professional grade performance, robust build quality, and seamless integration within the Simrad NMEA 2000 ecosystem. This system is considered a significant technological advancement, offering dependable, precise navigation once operational. While the high cost tempers the value perception slightly, the core focus remains on its superior dependability. Some users note the initial calibration process requires careful attention. Overall, the NAC-2 is highly regarded as a trustworthy, set-it-and-forget-it component for serious boaters prioritizing precision.
Know before you buy
The NAC-2 is specifically engineered for rudder-steered vessels up to 10 meters (33 feet) in length. If your boat exceeds this size or uses a different steering configuration, you may need to look at a higher-capacity autopilot computer.
This core pack includes the NAC-2 computer, the Precision-9 compass, the RF25N rudder feedback unit, and an NMEA 2000 starter kit. Please note that you will still need to purchase a compatible drive unit—such as a hydraulic pump or mechanical drive—that matches your boat's specific steering system.
The Precision-9 uses solid-state sensor technology to provide highly accurate heading and rate-of-turn data. This allows the autopilot to make precise, smooth steering adjustments, even in rough sea conditions where traditional compasses might struggle.
The system is designed for straightforward installation using NMEA 2000 plug-and-play connectors. While the physical mounting and wiring of the drive unit require some mechanical and electrical knowledge, the network setup is designed to be intuitive for those familiar with marine electronics.
Yes, the NAC-2 is fully compatible with Simrad multifunction displays via the NMEA 2000 network. Once connected, you can control your autopilot directly from your chartplotter interface.
The NAC-2 features auto-tuning capabilities that handle much of the setup process automatically. While you will need to perform a sea trial to calibrate the compass and rudder settings, the system is designed to guide you through these steps for optimal performance.
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$1749