Buoyage and Lights
Isolated Danger Marks
If there is a danger such as a rock or wreck that has deep water all round, it may be marked by an isolated danger marker.
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Isolated danger mark. |
Frequently these are beacons mounted directly on to the danger.
Chart symbol
Shape
Normally a pillar buoy or, a pole beacon.
Colour
All isolated danger marks have red and black horizontal stripes with two black balls for a topmark.
Light
The light will always be white, and have a sequence with 2 flashes. An example of an Isolated danger beacon is Rod's Skerry on chart 4F at (46°13.41'N 05°352.86'W).
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