Simrad NAC-3 High Current Course Computer
The Simrad NAC-3 High Current Course Computer processes steering commands for compatible high-current autopilot installations. Its course-control function coordinates connected feedback and drive components, helping manage heavier steering loads while supporting accurate heading maintenance and reduced manual helm input.
Simrad NAC-3 High Current Course Computer Specs
| Drive Type | High-Current Autopilot Processor |
| Pump/Ram Capacity | Supports RPU160, RPU300, DD15, HLD2000 |
| Flow Rate / Speed | 30A Continuous / 50A Peak Output |
| Max Pressure | System Dependent (Drive Unit) |
| Cylinder Compatibility | Vessels over 35' (10m) in Length |
| Operating Voltage | 12V / 24V DC Universal Support |
| Peak Current Draw | 50 Amps Transient Limit |
| Average Power Draw | Less than 5W (Logic Standby) |
| Motor Type | Reversing DC & Solenoid Drive Interface |
| Computer Compatibility | AP44, AP48, IS42, NSS/NSO evo3 |
| Port Size / Thread | NMEA 2000 Micro-C & NMEA 0183 |
| Drive Connection | Heavy-Duty Screw Terminal Blocks |
| Rotation/Stroke Direction | Adaptive Steering AI Logic |
| Mounting Type | Bulkhead / Vertical Dry Mount |
| Housing Material | Ruggedized Die-Cast Aluminum |
| Waterproof Rating | IPX2 (Drip-Proof Enclosure) |
| Operating Temperature | -25°C to +55°C Industrial Grade |
| Length (Overall) | 211 mm Main Chassis |
| Width/Diameter | 196 mm Mounting Frame |
| Weight | 1.3 kg (2.9 lbs) |
| Included Accessories | Network T-Joiner, 2M N2K Cable |
| Key Mechanical Feature | Dedicated rudder feedback & solenoid support |
Common Question of Simrad NAC-3
What is the NAC-3 computer?
The Simrad NAC-3 High Current Course Computer processes steering commands for compatible high-current autopilot drives. Confirm drive capacity, feedback, heading source, network connections, power supply, software, battery, and marine autopilot controller compatibility before installation.
What does high current mean?
High current identifies the intended drive-load category for the NAC-3 computer. Confirm actuator current, steering type, vessel size, battery capacity, cable gauge, circuit protection, feedback, and network requirements before commissioning.
Does it operate an anchor?
No. The NAC-3 manages autopilot steering and does not operate a gypsy, drum, chain motor, or anchor rope. It is not an electric anchor windlass. Verify separate anchoring equipment.
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