![]() Each aid has its purpose, which is to assist Skippers, Navigators, and the Helmsman determine the ship’s current location, and identify ways to keep it out of danger. When the elements of the Aids to Navigation system are combined they represent a comprehensive set of tools used to navigate safely through unfamiliar waters. Some of these also feature lights, bells, gongs, and horn signals. Other examples are lighthouses, beacons, ranges and day boards. Perhaps the most readily identified aids to navigation are red nun buoys and green can buoys. In a way, navigation aids perform the same function as street lights, traffic lights, construction barriers, and safety cones. They also alert navigators when obstructions are in near proximity to safe waters. These visual and audible devices identify navigable channels, and safe waters. This system employs a wide variety of buoys, and a variety of dayboards, ranges, and markers that are identified by their shape, color, numbers, letters, lights, and audible signals. ![]() It does not include the Western Rivers nor the Great Lakes. ![]() Aids to Navigation system which covers Near Coastal and Inland waters. Aids to Navigation … Do Yellow Buoys Mark Yellow Submarines ? Not really … but yellow buoys do exist. ![]()
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