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Published:25th October 202422nd December 2024 Last Updated:22nd December 2024
General Nautical Terminology

Cardinal Mark

Buoy or pillar placed at North, East, South or West side of an obstruction to warn vessels away.

Cardinal marks indicate that the deepest water in the area lies to the named side of the mark. They are used in conjunction with the compass to indicate the direction from the mark in which the deepest navigable water lies, to draw attention to a bend, junction or fork in a channel, or to mark the end of a shoal.

North Cardinal
East Cardinal
South Cardinal
West Cardinal

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