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Frequently Asked Questions
What components are included in a Simrad autopilot kit, and what else might I need to buy?
A standard Simrad autopilot kit typically includes the NAC autopilot computer, a control head or Simrad autopilot controller, a rudder feedback unit, a heading sensor, and the primary interconnect cables. What is not always included - and what you will need to source separately depending on your installation - is the drive unit itself. Hydraulic systems require a hydraulic pump or linear drive matched to your steering system's flow rate and pressure requirements, while mechanical steering setups use a mechanical drive unit. You may also need additional NMEA 2000 network cables, power cables, and mounting hardware depending on your boat's layout. Before you purchase, it is worth mapping out your installation to understand exactly what your specific vessel requires beyond the base kit.
How does a Simrad autopilot compare to a Raymarine autopilot at a similar price point?
Both Simrad and Raymarine produce highly capable autopilot systems that outperform most recreational boaters' needs, and the comparison often comes down to ecosystem and integration rather than raw autopilot performance. If you are already running Simrad NSS or GO series chartplotters, a Simrad autopilot system integrates natively with your existing displays, allowing autopilot control directly from your MFD touchscreen over the Simrad network. The same logic applies to Raymarine - their Evolution autopilot is purpose-built to work within the Raymarine SeaTalk ecosystem. Simrad carries a strong heritage in professional and commercial marine electronics, and that engineering DNA is evident in their NAC-based architecture, which is notably flexible across different hull and drive configurations. If you are starting fresh with no existing electronics, both brands are worth evaluating - the better choice is the one that matches the broader electronics platform you intend to build around.
Can I control a Simrad autopilot from my chartplotter, or do I need a separate control head?
Yes - one of the practical advantages of a Simrad autopilot system is its tight integration with Simrad chartplotters over NMEA 2000 and the Simrad proprietary network. When paired with a compatible NSS, NSO, or GO series display, you can engage autopilot, adjust heading, switch steering modes, and follow a plotted GPS route directly from the chartplotter touchscreen without touching a dedicated control head. That said, most installation configurations still include a standalone Simrad autopilot controller at the helm for direct tactile control - particularly useful when conditions are rough and navigating a touchscreen is impractical. Running both gives you redundancy and flexibility, and is the setup most experienced offshore boaters prefer.
Is a Simrad autopilot hard to install, and can an experienced DIY boater handle it?
The complexity of installing a Simrad auto pilot kit varies significantly depending on your boat's steering system and how accessible your helm and bilge areas are for cable runs. The control head and NAC computer installation is manageable for a boater comfortable with 12V marine wiring - the NMEA 2000 network connections are straightforward, and Simrad's documentation is thorough. The more involved part of the job is installing the rudder feedback unit and the drive unit itself, both of which require precise mechanical positioning and, in the case of hydraulic systems, interfacing with your existing steering hydraulics. Improperly installed hydraulic components can create serious steering system issues, so if your boat uses hydraulic steering and you are not experienced with marine hydraulic systems, professional installation is the right call. For smaller boats with mechanical steering, the job is considerably more approachable.
Will my Simrad autopilot hold course reliably in rough water and following seas?
A properly installed and sea-trialed Simrad autopilot system is designed to maintain course in challenging conditions, including cross-currents, quartering seas, and moderate following sea scenarios. The NAC computer continuously monitors heading deviation and applies corrections based on the vessel's dynamic response, and Simrad's sea trial calibration process tunes the system's steering gain, counter-rudder, and response parameters to your specific hull's behavior. That said, no autopilot replaces situational awareness in truly severe conditions - most experienced captains disengage autopilot in heavy confused seas where rapid manual corrections may be needed. The difference between a well-calibrated Simrad auto pilot and a poorly tuned one is significant, so taking the time to complete the sea trial setup properly after installation is not optional - it directly determines how well the system performs in the real conditions you encounter on your water.