Compass Calibration
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A magnetic compass is naturally sensitive to external influences. Interference can be caused by:
Magnetic objects such as screwdrivers, eyeglass cases, AirPods cases, or magnets in clothing
Electronic devices, including mobile phones
Nearby infrastructure such as harbors, bridges, locks, tunnels, high-voltage lines, and underground cables
These factors can result in inaccurate heading readings.
Tip: For a stable and reliable heading display—especially in areas with strong magnetic interference—we recommend using the GPS ground course whenever possible.
First, make sure the ControlHead is properly aligned. It's best to perform the alignment using the "Here" button while the vessel is stationary, for example, when docked in the harbor.
The calibration plot (compass calibration) works most accurately on open water, away from sources of interference such as bridges, locks, or electronic devices.
When the ControlHead is mounted facing directly forward, in the direction of travel, the Magnetic Heading Offset should be set to 0 degrees.
However, if you have mounted the ControlHead to the side, you need to adjust the offset accordingly:
Starboard side (right): Offset = -90°
Port side (left): Offset = 90°
A good compass calibration is best performed on open water without any sources of interference. Sail calmly on starboard and port for a few laps and then check the box next to Compass Lock Calibration.
It may happen that your deviation deviates significantly under slope. If you experience this under difficult conditions, temporarily unlock the Calibration in those conditions, the compass will then learn!
Accelerometer calibration is not required – this is always performed by us before delivery. For proper calibration, the ControlHead must be removed from its mounting: Place the device still for a few seconds on each of its six sides (top, bottom, left, right, front, and back).
