ECDIS must give an alarm for which of the following cases ().A.When the specified limit fo

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ECDIS must give an alarm for which of the following cases ().

A.When the specified limit for deviation from the planned route is exceeded

B.If the ship,within a specified time set by the watch officer,is going to cross a safety contour

C.If the ship,within a specified time set by the watch officer,is going to cross the boundary of a prohibited area

D.All of the above

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