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Course
Heading
Compass adjustment procedure:
• Select « Magnetic heading » and press .
• Choose « Calibration Wizard » and press .
• Choose « Start » and press . You will have to follow nke compass
information as precisely as possible every 30°.
• Choose « start » and confirm with OK. Follow nke compass’ instructions as
precisely as possible every 30°.
• Once nke compass is ready choose “validate” and press . Repeat this
procedure every required angle and then validate to save the correction.
Press “OK” to save the new correction. You can highlight “Abort” and press “OK” if
you want to cancel a correction. Repeat this operation every 30° to fill the whole
correction table. The compass will have its deviation curve implemented once this
table is completed.
2.6.9 Drift angle
Drift angle is measured between the boat’s heading and its course.
This value is used for true wind, VMG, corrected heading and current calculation.
Therefore it must be calculated optimally.
We use the following formula:
The correction factor is linked to the hull shape and the boat’s performance. Lower
values indicate higher performance. The drift value is always applied whatever the
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