If the conditions for linearization are less than ideal, the automatic
linearization process temporarily pauses until conditions improve again. The
following conditions can cause the linearization process to temporarily pause:
• significant magnetic interference is present
• vessel speed too slow or too fast
• rate-of-turn too slow or too fast
Compass lock
Once you are satisfied with the compass accuracy, you can lock the setting
to prevent the system from completing a further automatic linearization in
the future.
This feature is particularly useful for vessels in environments that are exposed
to strong magnetic disturbances on a regular basis (such as offshore wind
farms or very busy rivers, for example). In these situations it may be desirable
to use the Compass lock feature to disable the continuous linearization
process, as the magnetic interference may build a heading error over time.
Note:
The compass lock may be released at any time, to allow the compass
continual monitoring and adaptation to re-commence. This is particularly
useful if planning a long voyage. The earth’s magnetic field will change
significantly from one geographical location to another, and the compass
can continually compensate for the changes, ensuring you maintain
accurate heading data throughout the voyage.
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