Emergency Wreck Marker
Yellow/Blue Buoy
Placed as close to wreck as possible or in a pattern around wreck. Alternating yellow/blue flashing light
The International Association of Marine Aids to Navigation and Lighthouse Authorities brings together representatives of the aids to navigation services of more than 80 member countries for technical coordination, information sharing, and coordination of improvements to visual aids to navigation throughout the world.
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International Association of Marine Aids to Navigation and Lighthouse Authorities