AMSA, The Australian Maritime Safety Authority, has issued a Marine Notice with a view to reminding of the importance of magnetic compasses for the safety of navigation, which applies to regulated Australian regulated vessels and certain foreign vessels too.
Vessel owners and masters each have responsibilities for ensuring that magnetic compasses are maintained in good working order, adjusted and a table or curve of residual deviations is available.The performance of the compass should be monitored and, for a vessel more than 100GT, deviations recorded in a compass deviation book at regular intervals, ideally at least once every watch and also shortly after a large alteration of course.
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