Boat license. Cardinal mark: North Cardinal Buoy .Navigation with Sea Ray L650 fly.

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The Cardinal System consists of yellow and black buoys that are used to assist boaters in identifying the location of safe water. The Cardinal System marks safe water according to the Compass points of north, south, east and west. For example, a North Cardinal Buoy indicates that safe water lies to the North of the buoy. Cardinal Buoys may be equipped with a light and/or letters for identification on a marine chart.