angolo di bolina
English translation: upwind angle
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| 22:36 Mar 15, 2014 |
| Italian to English translations [PRO] Ships, Sailing, Maritime / Water sports (kiteboarding) | |||||||
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|  Selected response from: Gian Italy Local time: 19:08 | ||||||
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| Summary of answers provided | ||||
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| 4 | upwind angle |
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| 3 | apparent wind angle |
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Answers
8 hrs confidence: 
apparent wind angle Explanation: tecnologia - Ignazio Maria VIOLA www.ignazioviola.com/.../Viola_Nautech2006.pdf Translate this page nella stessa posizione rispetto alla direzione da cui proviene il vento e quindi ha sempre lo stesso angolo di bolina (Apparent Wind Angle). L'intensità del vento ... |
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11 hrs confidence:
upwind angle Explanation: oppure close-hauled course angle Andature contro il vento 1. bolina per vento che proviene tra le sei e le quattro quarte da prua. Si può inoltre distinguere tra: • bolina stretta (40 - 45 gradi al vento reale) • bolina larga (45 - 55 gradi al vento reale ) Close hauled A boat is sailing close hauled (also called beating or working to windward) when its sails are trimmed in tightly and it is sailing as close to the wind as it can without entering the no go zone. This point of sail lets the boat travel diagonally to the wind direction, or "upwind". Sails act in a similar fashion to wings; the flow of air over the outside of the curve creates lift that pulls the boat through the water. A boat is considered to be "pinching" or "feathering" if the helmsman tries to sail above an efficient close-hauled course and the sails begin to luff slightly. This can be an effective technique to maintain control of the boat on a windy day by "de-powering", or stalling the sail's lift slightly, but is otherwise inefficient. -------------------------------------------------- Note added at 11 ore (2014-03-16 10:11:12 GMT) -------------------------------------------------- Typical minimum pointing angles to the true wind are as follows. about 35° for modern racing yachts which have been optimized for upwind performance (like America's Cup yachts) about 40 to 45° for modern cruiser-racer yachts (fast cruising yachts) -------------------------------------------------- Note added at 11 ore (2014-03-16 10:24:35 GMT) -------------------------------------------------- https://www.google.it/search?q=point angle (sailing)&tbm=isc... -------------------------------------------------- Note added at 12 ore (2014-03-16 10:42:16 GMT) -------------------------------------------------- Beating Beating is the procedure by which a ship moves on a zig-zag course to make progress directly into the wind (upwind). No sailing vessel can move directly upwind (though that may be the desired direction). Beating allows the vessel to advance indirectly upwind. A ship that is beating will sail as close to the wind as possible; this position is known as close hauled. In general, the closest angle to the wind that a ship can sail is around 35 to 45 degrees. Some modern yachts can sail very near to the wind, while older ships, especially square-rigged ships, were much worse at it. |
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