Aligning compass to GPS

Note

If you have a system without a source of GPS data, skip this section and proceed to Manual compass alignment.

If your system has a GPS connected to your data network (SeaTalk, SeaTalk NG, or NMEA), the autopilot is tuned to the GPS heading while you steer to a known magnetic heading. This step provides a rough alignment and minimizes the amount of compass fine-tuning required. As part of the align to GPS process, the autopilot system will compare the average heading with the average COG (Course Over Ground) value reported by the source of GPS data, and set an offset value so that the heading matches the COG value provided by the GPS.
  1. To align the compass to GPS, steer the vessel on a steady course with minimal tide, increase speed to more than 3 knots, and then press START.
  2. To begin the AutoLearn process, follow the on-screen instructions until the process completes, then press the CONTINUE button when displayed.
You can cancel the Sea trial calibration process at any time by pressing STANDBY.