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may be installed in the sail; a cruising boat will typically have two to three pairs. Pulling these points down to the boom forms a new tack and clew, reducing the sail's area. Using the pair of grommets closest to the boom is called a single reef, using the next pair is called a double reef, and so
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or hardware inside the boom winds it around a rotating foil. Furling systems controlled with lines led to the cockpit allow reefing without crew having to go on deck in heavy weather. Roller reefing also allows more variable sail area than conventional or jiffy reefing. Countering these advantages
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create a new tack and clew for the sail by pulling those points tight to the boom. These can be led back to the cockpit to allow crew members to reef without going on deck in heavy weather. Intermediate reef cringles need not be used.
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reefing allows for the quick establishment of a new tack and clew, while the halyard is partially lowered and then raised. One or two reefing lines passing through the sail's luff and leach reef
207:. When reefed, the sail is pulled upwards and affixed to the yard at one of the reef bands that runs horizontally across the sail. Each reef band is a canvas-reinforced strip, which contains
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are the furled sail possibly not having an optimal shape and sail repair or replacement being more difficult. In-mast roller-furling mainsails are not conducive to good sail shape.
424:
211:—eyes through which the reef lines pass that attach the sail to the yard. A sail may have several reef bands to shorten sail to different degrees.
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to secure the excess fabric of the sail after reefing to minimize flogging and improve visibility from the cockpit.
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Sails may have built-in alternative attachment points that allow their area to be reduced. In a mainsail, pairs of
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jib completely furled around the forestay, and mainsail partially furled within the mast (forming a reef) on a
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vessels stow the unused portion on a spar above the sail. Reefing may occur by rolling the sail around its
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to reduce its exposure to the wind. In mainsail furling systems the sail is either wrapped around the
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Gaff sail, showing reefing cringles (13), reefing points (20) and reefing lines (21)
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Handbook of
Offshore Cruising: The Dream and Reality of Modern Ocean Cruising
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grommeted holes in the sail between the reefing tacks. These are used with
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69:'s stability in strong winds. Restoring full sail area is termed
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Roller reefing rolls or wraps the sail around a wire, foil, or
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Howard, James D.; Howard, Jim; Doane, Charles J. (2000).
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57:in on itself and attaching the unused portion to a
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128:, called reefing tacks, reefing clews, or reefing
84:vessels store the unused portion of the sail on a
53:, usually by folding or rolling one edge of the
203:Square-rigged sails hang from a spar, called a
100:, either on a rotating stay or within a spar.
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8:
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65:, as the primary measure to preserve a
199:, showing reef bands across the sails.
385:Rousemaniere, John (7 January 2014).
7:
312:. Sheridan House, Inc. p. 170.
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299:
339:. Sheridan House, Inc. p. 90.
25:
336:Chartering a Boat: Sail and Power
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387:The Annapolis Book of Seamanship
226:Glossary of nautical terms (M-Z)
248:Bingham, Bruce (20 May 2015).
1:
360:Mayne, Richard (2018-10-24).
468:Center of lateral resistance
195:Square-rigged, 18th-century
27:Reducing the area of a sail
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366:. Routledge. p. 233.
515:
441:
282:. Simon & Schuster.
498:Racing Rules of Sailing
363:The Language of Sailing
333:Caswell, Chris (2001).
250:"How to Reef the Main"
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178:by a mechanism in the
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49:reduces the area of a
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35:
274:Jobson, Gary (1998).
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278:Sailing Fundamentals
133:on. A sail may have
82:fore-and-aft rigged
652:Sailing manoeuvres
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88:(below the sail),
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36:
639:
638:
373:978-1-135-96558-7
346:978-1-57409-111-3
319:978-1-57409-093-2
104:Fore-and-aft rigs
16:(Redirected from
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436:and manoeuvres
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254:Cruising World
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67:sailing vessel
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139:reefing lines
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90:square-rigged
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605:Chinese gybe
579:Wing on wing
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534:Close-hauled
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476:Weather helm
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257:. Retrieved
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135:reef points,
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79:
70:
46:
45:
504:Rounding up
187:Square rigs
71:shaking out
34:Reefed Sail
18:Reef (sail)
610:Death roll
539:Heaving to
527:Manoeuvres
509:Sail twist
289:0684849941
232:References
118:Bavaria 36
600:Capsizing
588:Accidents
180:gooseneck
143:buntlines
646:Category
615:Turtling
559:Reaching
549:In irons
472:Lee helm
452:cruising
215:See also
209:cringles
159:cringles
153:Slab or
130:cringles
126:grommets
80:Whereas
631:Planing
574:Tacking
569:Reefing
564:Running
544:Heeling
460:Sailing
434:Sailing
259:3 April
197:frigate
47:Reefing
624:
595:Broach
492:Hiking
448:racing
393:
370:
343:
316:
286:
166:Roller
55:canvas
444:sport
221:Brail
155:jiffy
120:sloop
114:genoa
61:or a
554:Jibe
391:ISBN
368:ISBN
341:ISBN
314:ISBN
284:ISBN
261:2016
205:yard
176:boom
172:spar
149:Slab
98:foot
94:luff
86:boom
75:reef
63:stay
59:spar
51:sail
141:or
96:or
77:.
648::
474:,
450:,
446:,
389:.
298:^
252:.
240:^
112:A
73:a
478:)
470:(
426:e
419:t
412:v
399:.
376:.
349:.
322:.
292:.
263:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
