Compass swing

You will need to turn your vessel in slow circles while the system automatically makes adjustments to account for compass deviation. Each 360-degree circle should take no less than two minutes, and you should complete at least two circles.
  1. Start moving vessel in slow even circles, then press START.
  2. Keep speed to below 2 knots. Watch the display to ensure your turn rate is not too fast. If the message ‘Slow Down’ is displayed reduce your rate of turn, this can be achieved by slowing down and / or steering in a wider circle.
    If a 'Slow Down' message is displayed the current circle will have to be repeated.
  3. When the compass has been calibrated, a message will be displayed showing the detected deviation. If this is more than 15 degrees you will need to abort the calibration process and re-site the compass further away from metal items, then repeat the calibration process. If you still find a deviation of more than 15 degrees, contact your Raymarine dealer for advice. If the deviation is within acceptable limits, press CONTINUE.
You can cancel Seatrial calibration at any time by pressing STANDBY.