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All| There are 2224 entries in the glossary. |
| Pages: << < 3 4 5 6 7 8 9 10 11 > >> |
| Anti-Gallicans | A pair of additional backstays temporarily rigged to provide extra support to the masts of square rigged vessels when sailing downwind. |
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| Anticyclone | Area of high barometric pressure where the wind circulates clockwise in the Northern Hemisphere, and counter-clockwise in the Southern Hemisphere. These are fair weather systems with light or moderate winds. |
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| Antifouling Paint | A paint applied to the boat's bottom below the waterline which contains "poisons", such as copper, to inhibit the growth of marine life such as weeds or barnacles. |
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| Apeak | Said of an anchor when the cable is taut and vertical. |
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| Apostles | Large bollards affixed to the main deck near the bow of a square rigged vessel around which hawsers or anchor cables were belayed. |
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| Apparent Wind | The direction and speed of the wind as it appears to those on board, relative to the speed and direction of the boat; combination of the true wind and the wind caused by the boat's movement through the water. |
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| Appendage | A rudder, keel, centerboard, or skeg. |
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| Apron | A strengthening timber behind the lower part of the stem and above the foremost end of the keel in a wooden vessel. |
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| Aqualung | A device invented by Captain Jacques Cousteau in 1943 to enable a diver to operate underwater independent from an air supply from the surface. |
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| Arbitration | Method of settling disputes which is usually binding on parties. A clause usually in a charter party. |
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| Aries | The point at which the Sun , traveling in the Ecliptic , crosses the Equinoctial when going from South to North declination. |
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| Armstrong Patent | Slang expression to indicate that a ship was not fitted with any mechanical aids, and that all the work of the ship had to be done with the strong arms of the crew. |
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| Articles of Agreement | The document containing all particulars relating to the terms of agreement between the Master of the vessel and the crew. Sometimes called ship's articles or shipping articles. |
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| Articles of War | Disciplinary code in which maritime crimes and punishments are specified. |
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| Artificial Horizon | An aid to taking as astronomical sight with a sextant when the sea horizon is obscured through haze, fog, or darkness. |
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