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Sea mark - Wikipedia, the free encyclopedia |
 | | A sea mark is a pilotage aid which identifies the position of a maritime channel, hazard and administrative area to allow boats, ships and seaplanes to navigate safely. |
 | | Sea marks are used to locate channels, dangerous rocks or shoals, mooring positions, areas of speed limits, traffic separation schemes, submerged shipwrecks, and for a variety of other navigational purposes. |
 | | Marks are shown on nautical charts, using symbols that distinguish their colour, shape and light characteristic, and are often identified by name or number. |
| en.wikipedia.org /wiki/Sea_mark (323 words) |
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