NAC-3 Core Autopilot Pack

NAC-3 Core Autopilot Pack

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When building an autopilot network for a rudder steered boat, the NAC-3 core pack is the perfect place to start. The core package will work with select Simrad and B&G headunits or dedicated autopilot controllers, and will simply need the correct sized drive unit to finish it off.

This system is designed for boats over 10m - For boats under 10m, the NAC-3 offers the same pack, tailored towards smaller boats.

This pack includes a NAC-3 Core computer, a RF25N rudder feedback unit, and Precision-9 solid state compass. The core computer takes the bearing data from the Precision 9 to generate a heading based on inputs from your B&G or Simrad Multi-function display (or dedicated autopilot controller). The RF25N rudder feedback unit gives accurate, instantaneous rudder movement data to the core computer, allowing the computer to drive the rudder perfectly, keeping the vessel on course with better efficiency and accuracy. This is especially useful for sailing vessels, as heel will swing the vessel, and the core computer can use the RF25N to compute the optimal position for the rudder to keep the desired heading.

The entire system runs over the NMEA2000 network, and with simple automatic tuning and compass calibration, the NAC-3 is easy to install and use.

Package includes

  • 1x NAC-3 Core Computer
  • 1x RF25N Rudder Feedback Unit
  • 1x Precision-9 Solid State Compass
  • All required NMEA 2000 backbone cables and connectors.


  • Power Output: 30amps Continuous, 50amps Peak. (Suitable for high-current drive units)
  • Clutch Output: Yes
  • Connections: NMEA2000

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes under $399 attract an $15.00 shipping charge.

Orders of $399 or more ship free.* Excludes Bulky Or Dangerous Goods

For Remote areas and bulky items. If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.

What Our Customer Say

i ordered 6 port holes and these guys found exactly what i needed and went out of there way so much to help me 5 star service .


Prompt shipping and a good price. Item was well packed and arrived as ordered and undamaged. Thanks

Tom Mercer

Good quality parts easy to order on downside a couple of delays but they were quick to call and let me know

Darcy Scholte

Good service. Parts delivered on time and in good condition. There was a bit of mix up with one of my first orders but very promptly sorted and sent our to...


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