Determining compass deviation.
Determining compass deviation is necessary to be done periodically, at certain time and in certain situations and drawing the diagram of Deviation curve.
The main situations in which the determination is made are:
– After dry dock;
– After a long standing in the same position;
– The large variations of latitude;
In case the deviation compensation is not possible, to determine deviation remains absolutely mandatory.
Deviation curve is a diagram of the ship’s magnetic compass deviation.
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