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Tuesday, May 17, 2011

Navigational Aids

Review

The United States waters are marked by the U.S. Aids to sailing principles in order to help and help sailing and sailing in general. U.S. Aids to sailing is a straightforward organized principles which is based on arrangement and blend of distinct shapes, colors and Lights to determine navigable waterways, channels and obstacles for navigation.





Aids to sailing can be treated like traffic signs on the sea: they contribute mariners and seamen with the facts very adequate to those drivers receive from traffic signs on the road. Navigational aids may be whatever from beacons, floating buoys, day markers, Lighted structures, range Lights, fog signals and landmarks. Each of them has known and customary purpose. They help in determining current position of the vessel, getting safely from one position to an additional one or staying out of danger and peril. The main purpose of the U.S. Aids to sailing principles is to promote safe and procure navigation.

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The U.S. Aids to sailing principles is used in blend with special maps called nautical Charts. nautical Charts are one of the most important tools that seamen use for planning voyages, considering routes and safe navigation. They show to the navigator the nature, shape and potential of the coast and sea/river/channel bottom, positions and special meanings of buoys and beacons. There are depths of water, land features, directional information, nautical hazards and other pertinent facts also shown on nautical Charts, This kind of needful data cannot be obtained from any other sources, a road map or atlas for example.

Navigational Aids
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Buoys and beacons are main components of the U.S. Aids to sailing System.

Buoys are floating objects which are moored (i.e. Fixed) to the sea bottom by concrete sinkers with chain or by rope moorings made of synthetic fibers and they are related to the buoy body. This is how permanent position of floating object is secured. Navigational buoys come in many sizes and shapes. They are intended to contribute facts to the mariners by their color, shape or by the characteristics of a graphic or audible signal. Very often the blend of two or more these features is used.

Beacons are extremely needful aids to navigation. They are structures that are constantly fixed to the earth's exterior - ground. These aids differ from tiny single-pile structures to lighthouses. Beacons may be located whether on land or in the water. There are two basic groups of beacons: lighted beacons which are called Lights and unlighted beacons which are called daybeacons. Beacons exhibit a daymark which is to be graphic and identifiable against any background. The meaning of the daymark while daylight hours is the same as the aid's light at night.

Navigational Aids

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