Knowledge

Emergency wreck buoy

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The buoy is designed to "provide a clear and unambiguous" mark of a new and uncharted danger. The buoy is painted with 4, 6 or 8 vertical stripes of alternate yellow and blue. In addition it may have the word "WRECK" painted on it. Optionally it may carry a vertical (St. George's) cross painted
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is used to warn of a new wreck which has not yet been listed in maritime documents. The buoy is expected to be deployed for the first 24-72 hours after the wreck occurs. After that time more permanent buoyage (such as
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yellow. The light flashes alternate yellow and blue for one second each with a half second gap between. No other navigation mark uses blue.
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International Association of Marine Aids to Navigation and Lighthouse Authorities
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and the subsequent collisions with the wreck by the Dutch vessel
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IALA recommendation O-133 on emergency wreck marking buoy
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Maritime buoyage system and other aids to navigation
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Index




isolated danger marks
cardinal marks
International Association of Marine Aids to Navigation and Lighthouse Authorities
MV Tricolor
icon
Transport portal
Navigation
Lateral mark
Cardinal mark
Safe water mark
Special mark
Isolated danger mark


Emergency Wreck Buoys
the original
IALA recommendation O-133 on emergency wreck marking buoy
Categories
Nautical terminology
Navigational buoys

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