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NAC-3 Autopilot Computer

SKU: 000-13250-001

The NAC-3 is the centre of your autopilot system, containing the electronics needed to operate and interface with other key components. The NAC-3 has been designed for boats ten metres (35 feet) or greater in length and is rated to operate high-current pumps, mechanical drive units, and solenoid valves.

Product details

High-Current Output
The NAC-3 Autopilot Computer is recommended for boats above 10 metres (35 feet) in length. It is rated to operate high-current drive pumps including the Simrad RPU160 and RPU300, mechanical drives such as the Simrad DD15, hydraulic linear drives such as the HLD2000 series, and solenoid valves.

Virtual Rudder Feedback
Simrad Virtual Rudder Feedback (VRF) technology eliminates the need to install a separate rudder feedback unit aboard outboard and sterndrive (inboard/outboard) boats with planing hulls. This reduces overall autopilot system cost and complexity, and is ideal where a feedback unit is impractical due to mechanical constraints. For vessels that do require a physical rudder feedback sensor, the NAC-3 supports SimNet or NMEA 2000® connected Simrad RF25 feedback units, and rudder feedback sensors with variable frequency output including the Simrad RF300.

Easy Installation
Industry-standard NMEA 2000® networking and NMEA 0183® input allow simple connectivity to heading sensors, rudder feedback units, autopilot controllers, and multifunction displays located anywhere on board.

Key Features

  • Reliable autopilot performance based on Continuum Steering technology
  • Recommended for boats above 10 metres (35 feet) in length
  • Compatible with high-current drive pumps, mechanical drives, hydraulic linear drives, and solenoid valves
  • Virtual rudder feedback for simplified installation aboard outboard and sterndrive boats
  • Supports Simrad RF25 and RF300 rudder feedback units
  • NMEA 2000® connectivity to heading sensors, rudder feedbacks, dedicated autopilot controllers, and multifunction displays
  • NMEA 0183® input

NMEA 2000


What's in the box?

  • N2K-T-RD Network T-Connector
  • N2KEXT-2RD 2ft Network Extension Cable


Compass Safe
0,5m (20 inches)
Dimensions W x H x D
204 x 190 x 57mm (8,1 x 7,5 x 2,2")
Mounting Type
0,7 kg (1,6 lbs)
Power Consumption max
Power Consumption typical
100mA + Drive load
Recommended Fuse Rating
Internal fuse 30A (Slow)
Supply Voltage
12/24VDC +30 -10%
Operating Temperature Range
-15 to +55C (5 to 131F)
Storage Temperature Range
-30C to +70C (-22F to +158F)
NMEA 0183 Sentences supported
Input: AAM, ACK, APB, BOD, BWC, DPT, GGA, GLL, HDG, HDT, HSC, RMA, RMB, RMC, ROT, THS, TNT, VBW, VHW, VLW, VTG, ZDA. Output: HDG (10Hz) or HDT (10Hz), RSA (5Hz)
NMEA 2000 Connectivity
1x CAN terminal, 1 LEN
Compasssensor support
NMEA2000, NMEA0183
Drive output
12/24VDC. Rev. motor control 30A, 50A peak (1 sec.). Solenoid control: 10A (min. 10mA)
Engine Drive systems integration
Reversible pump/motor, Solenoid valve on/off
Rudder sensor s upport
RF300, RF45X, RF25N, RF70 & VRF
Warranty Period
2 years