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Use the box below to search for a specific Term |
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| There are 98 entries in the glossary. |
| Pages: 1 2 3 4 5 6 7 > >> |
| Race | (1) A strong, confused tide or current. (2) A competition of skill and seamanship between yachts. |
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| Rack | The operation of temporarily holding two lines together by seizing. |
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| Radar | Radio Detection and Ranging. An electronic instrument that uses radio waves to find the distance and bearing of other objects. Used to avoid collisions, particularly in times of poor visibility. |
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| Radar Arch | An arch to mount the radar, usually at the stern of the boat. |
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| Radar Reflector | An object designed to increase the radio reflectivity of a boat so that it is more visible on radar. Many small boats are made with fiberglass and other materials that do not reflect radar very well on their own. |
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| Radiation Fog | Fog over land caused by condensation of vapor in the air above cooler ground. |
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| Radio | An instrument that uses radio waves to communicate with other vessels. VHF very high frequency - radios are common for marine use, but are limited in range. Single Side Band SSB - radios have longer ranges. |
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| Radio Beacon | A navigational aid that emits radio waves for navigational purposes. The radio beacon's position is known and the direction of the radio beacon can be determined by using a radio direction finder. |
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| Radio Direction Finder (RDF) | A navigational instrument which provides a bearing to a radio beacon. |
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| Radio Operator | An officer who operates and controls the shipboard communication equipment. |
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| Radiowaves | Invisible waves in the electromagnetic spectrum that are used to communicate (radio) - and navigate (radar). |
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| Radome | A bun-shaped cover placed over a radar scanner to prevent risk of fouling and to protect it from the weather. |
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| Raft | A small flat boat, usually inflatable. |
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| Rafting | (1) When two or more boats tie up alongside each other. (2) Overlapping of edges of two ice-floes, so that one floe is partly supported by the other. |
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| Rail | (1) The edge where the deck joins the hull; top edge of bulwarks. (2) The railing around the deck. |
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