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A buoy consisting of a ballasted float carrying a staff which supports a flag or light. Dan buoys are used principally in mine- sweeping, and by fisherman to mark the position of deepsea fishing lines or nets



Related Terms

WRECK BUOY

A buoy marking the position of a wreck. It is usually placed on the seaward or channel side of the wreck and as near to the wreck as conditions will permit. To avoid confusion in some situations, two buoys may be used to mark the wreck.

TELEGRAPH BUOY

A buoy used to mark the position of a submarine tele- graph cable.

FIXED MARK

A navigation mark fixed in position

BUOY

An anchored float used for marking a position on the water or a hazard or a shoal and for mooring.

LIGHT-FLOAT

A buoy having a boat-shaped body. Light-floats are usually unmanned and are used instead of smaller lighted buoys in waters where strong currents are experienced

CARDINAL HEADING

A heading in the direction of any of the cardinal points of the compass. cardinal mark An IALA aid to navigation intended to show the location of a danger to navigation based on its position relative to the danger. Its distinguishing features are black double-cone topmarks and black and yellow horizontal bands.

OUTFALL BUOY

A buoy marking the position where a sewer or other drain discharges.

SPECIAL PURPOSE BUOY

A buoy used to indicate a special meaning to the mariner and having no lateral significance, such as one used to mark a quarantine or anchorage area.

WAY POINT

A mark or position at which a vessel is required to report to establish its position

REPORTING POINT

A mark or position at which a vessel is required to report to establish its position

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