Lighted Navigational Marker Buoy

A metallic, floatable device of tower construction designed to be anchored in water to mark the location of channels, shoals, rocks, reefs, submerged obstacles, and the like, and to promote safe navigation of watercraft. It accommodates a lantern and may accommodate a sound making apparatus, such as a bell, gong, or whistle. See also buoy, navigational marker, unlighted, sound.