Iftheconditionsforlinearizationarelessthanideal,theautomatic
linearizationprocesstemporarilypausesuntilconditionsimproveagain.The
followingconditionscancausethelinearizationprocesstotemporarilypause:
•significantmagneticinterferenceispresent
•vesselspeedtooslowortoofast
•rate-of-turntooslowortoofast
Compasslock
Onceyouaresatisfiedwiththecompassaccuracy
,youcanlockthesetting
topreventthesystemfromcompletingafurtherautomaticlinearizationin
thefuture.
Thisfeatureisparticularlyusefulforvesselsinenvironmentsthatareexposed
tostrongmagneticdisturbancesonaregularbasis(suchasoffshorewind
farmsorverybusyrivers,forexample).Inthesesituationsitmaybedesirable
tousetheCompasslockfeaturetodisablethecontinuouslinearization
process,asthemagneticinterferencemaybuildaheadingerrorovertime.
Note:
Thecompasslockmaybereleasedatanytime ,toallowthecompass
continualmonitoringandadaptationtore-commence.Thisisparticularly
usefulifplanningalongvoyage.Theearth’smagneticfieldwillchange
significantlyfromonegeographicallocationtoanother,andthecompass
cancontinuallycompensateforthechanges,ensuringyoumaintain
accurateheadingdatathroughoutthevoyage.
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