Simrad NAC-3 Autopilot RF25N Feedback Core Pack

Use physical rudder-position feedback with the Simrad NAC-3 RF25N Feedback Core Pack, which includes a NAC-3 course computer, Precision-9 nine-axis AHRS, RF25N rudder-feedback sensor, and NMEA 2000 starter kit. The pack supports sailboats, heavy-displacement yachts, and commercial workboats with compatible inboard rudder hydraulic lines, mechanical tiller rams, or solenoid-valve steering. Its physical feedback sensor supports installations requiring measured rudder-position tracking.

The NAC-3 works with hydraulic cylinders from 250 cc to 500 cc, or 15.2 to 30.5 cubic inches. It provides 30A continuous output and up to 50A peak output for compatible linear drives, hydraulic pumps, or solenoids. Power support includes 12V and 24V DC systems, while maximum intermittent draw reaches 40A. The core unit carries an IPX5 rating and the RF25N sensor has an IPX7 rating.

System Integration and Feedback

This Simrad core pack does not include the separate steering drive or helm display needed for a complete autopilot installation. The NAC-3 course computer manages the selected drive, the Precision-9 supplies heading and attitude data, and the RF25N provides physical rudder-position feedback. Each component must be matched with the vessel’s steering configuration, electrical system, and NMEA 2000 backbone.

Physical rudder-geometry synchronization is part of the stated dockside setup process. Continuum Steering Technology, specialized wind tracking, and thruster-control integration are system functions that depend on the connected drive, heading source, display, vessel steering geometry, and complete commissioning procedure.

Why Choose the Simrad NAC-3 RF25N Feedback Core Pack

The Simrad NAC-3 RF25N Feedback Core Pack combines a NAC-3 course computer, Precision-9 nine-axis AHRS, RF25N rudder sensor, and NMEA 2000 starter kit. Its 250 cc to 500 cc cylinder range, 30A continuous output, 50A peak output, 12V or 24V support, IPX5 and IPX7 component ratings, and physical rudder-feedback configuration provide specific checks for higher-current autopilot system planning.

Warranty and Support

Simrad warranty terms vary by product and region, and the supplied specifications do not provide a named warranty period for this core pack. can help you review RF25N feedback requirements, cylinder-volume range, drive selection, NAC-3 output capacity, sensor placement, NMEA 2000 network needs, power capacity, and separate helm-display requirements before purchase. Review the applicable Simrad warranty coverage and documented package contents before ordering.

Before Ordering the Simrad NAC-3 RF25N Feedback Core Pack

Confirm that your vessel requires an RF25N physical rudder-feedback sensor and uses a compatible hydraulic, mechanical tiller, or solenoid-valve steering configuration. You should verify a 250 cc to 500 cc cylinder range where applicable, selected steering drive, NAC-3 and RF25N mounting space, Precision-9 placement, NMEA 2000 capacity, 12V or 24V supply, 30A continuous and 50A peak drive requirements, and circuit capacity for 40A intermittent draw before purchase.