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A sail is any type of surface intended to generate thrust by being placed in a wind—in essence a vertically-oriented wing. Sails are used in sailing.

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Wikipedia about sail

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A sail is any type of surface intended to generate thrust by being placed in a wind—in essence a vertically-oriented wing. Sails are used in sailing.

History of sails

See: Ship The ships built at around 10,000 BC were just crude log rafts or dug-out canoes. The earliest known ships were papyrus reed boats built by the Egyptians around 4,000 BC. The Greeks and Phoenicians had begun trading by ship around 1,200 BC. Ships with the triangular sails did not appear until the 17th Century AD. The Arabs had invented the sail in about 2,000 BC in an attempt to establish trading routes around the Persian Gulf. The Chinese had designed sails around 3,000 BC, and can still be seen on traditional wooden ships sailing off the coast of Vietnam in Ha Long Bay.

In an interesting recent development, an elderly trawler, TS Pelican, was fitted with what are thought to have been the unorthodox riggings used by the Barbary pirates in the 16th century. The resultant performance has been remarkable, with the Pelican sailing, at speed, over 20 degrees nearer the wind than any square rigger.

Use of sails

Sails are primarily used on the water by sailing ships and sail boats as a propulsion system. For purposes of commerce, sails have been greatly superseded by other forms of propulsion, such as the internal combustion engine. For recreation, however, sailing vessels remain popular.

The most familiar type of sailboat, a small pleasure yacht, usually has a sail-plan called a sloop. This has two sails in a fore-and-aft arrangement: the mainsail and the jib.

The mainsail extends aftward and is secured the whole length of its edges to the mast and to a boom also hung from the mast. The sails of tall ships are attached to wooden timbers or "spars".

The jib is secured along its leading edge to a forestay (strong wire) strung from the top of the mast to the bowsprit on the bow (nose) of the boat. A genoa is also used on some boats. It is a type of jib that is large enough to overlap the mainsail, and cut so that it is fuller than an ordinary jib.

Fore-and-aft sails can be switched from one side of the boat to the other in order to provide propulsion as the sailboat changes direction relative to the wind. When the boat's stern crosses the wind, this is called gybing; when the bow crosses the wind, it is called tacking. Tacking repeatedly from port to starboard and/or vice versa, called "beating", is done in order to allow the boat to follow a course into the the wind.

A primary feature of a properly designed sail is an amount of "draft", caused by curvature of the surface of the sail. When the leading edge of a sail is oriented into the wind, the correct curvature helps maximise lift while minimising turbulence and drag, much like the carefully designed curves of aircraft wings. Modern sails are manufactured with a combination of broadseaming and non-stretch fabric (ref New technology below). The former adds draft, while the latter allows the sail to keep a constant shape as the wind pressure increases. The draft of the sail can be reduced in stronger winds by use of a cunningham and outhaul, and also by bending the mast and increasing the downward pressure of the boom by use of a boom vang.

Search results for Sail

Sail Magazine Buyers Guide

Guide published annually to help potential buyers browse boats, manufacturers, and related equipment.www.sailbuyersguide.com/

Sail | Barnes & Noble.com

Find Sail plus much more at BN.com. Free 3-Day Delivery on orders over 25 dollars.search.barnesandnoble.com/Sail/James-Patterson/e/97803160187...

How to Sail

To sail before the wind you let your sheets out until the boom stands at almost ... Keep your eye on the sail and see that it does not flap, for if the man at the ...www.inquiry.net/outdoor/summer/boats/how_to_sail.htm

Sailing Association of Intermountain Lakes (SAIL)

Local represenation to the U.S. Sailing Association for Colorado, Wyoming, New Mexico and Western Nebraska promoting sailing and Yacht racing.www.rmsail.org/

Welcome to SAIL High School's website.

SAIL had the most improved Science results of any high school. SAIL scored 2nd best in percentage of students making a 3 or better in Reading and Science. ...www.sail.leon.k12.fl.us/

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News about Sail

Tall ships to sail in next year

Kenosha NewsKenosha will once again be the port of call for tall ships. The Days of Discovery tall ship event will return to Kenosha's harbor July 30 to Aug. 2, 2009. The nautical event previously docked in Kenosha in 2003, 2004 and 2007.http://www.kenoshanews.com/article_comments/view_comments.ph...

RSVPs sail in for LV Pacific Series

NZCity16 September 2008 Russell Coutts and Oracle have confirmed their participation in the Louis Vuitton Pacific Series on the Waitemata Harbour in January.http://home.nzcity.co.nz/news/article.aspx?id=90271&fm=newsm...

North West Evening Mail

North-West Evening MailMARTIN Clunes has set sail on an epic journey around Great Britain’s islands - of which there are about 1,000 or so. His exploration of hidden Britain brought him to Piel, which will feature in the landmark ITV1 series, Islands of Britain.http://www.nwemail.co.uk/news/barrow/1.240318

Sail aboard Madeline offered for potential crew members

Leelanau EnterpriseThe Maritime Heritage Alliance will offer a sail aboard the schooner Madeline for adults interested in becoming a member of her crew. The sail will be held on Thursday, Sept. 25, from 5:30 to 8 p.m.http://www.leelanaunews.com/blog/2008/09/14/sail-aboard-made...

Mainland, St. Augustine, Southern sail in Merchant Marine Academy Regatta

Press of Atlantic CityFrom Press staff reportshttp://www.pressofatlanticcity.com/128/story/258882.html

News about Sail

NFL to Kevin Smith: Sorry, you can't change your jersey number

Detroit Free PressMake sail! Sir Richard Branson is back in the business of chasing speed records on the high seas -- this time with his family. The British billionaire and chairman of the Virgin Group announced Thursday that he'll attempt to break the record for a ... http://www.freep.com/apps/pbcs.dll/article?AID=/20080905/SPO...

Story, Video: Ships sail to sweep

Herald Times ReporterMANITOWOC — The biggest hurdle Manitowoc Lincoln could face this season might be in the trainers room rather than the volleyball floor. Already without injured middle hitter Courtney Mrotek (knee) for an undisclosed amount of time, the Ships lost ... http://www.htrnews.com/apps/pbcs.dll/article?AID=/20080905/M...

Paul McCartney takes Nancy Shevell for sail on boat named Linda

New York Daily NewsThings appear to be heating up between Paul McCartney and Nancy Shevell. With the wind blowing in his hair, Paul McCartney shares a tender moment with New York socialite Nancy Shevell as they gently cruise off the coast of Long Island - in a boat ... http://www.nydailynews.com/gossip/2008/09/02/2008-09-02_paul...

Sir Richard Branson to Attempt Transatlantic Sailing Record

The Epoch TimesBON VOYAGE: Virgin Group chairman Sir Richard Branson with part of the TeamOrigin sailing crew on board the 99-foot yacht they will sail from New York to England in an attempt to break the world record for fastest crossing of the Atlantic on a boat ... http://en.epochtimes.com/n2/united-states/bransont-transatla...

Ship of old looks to future

Kings Lynn NewsA REPLICA 15th century German sailing ship will dock in Lynn as part of a major festival to celebrate the town's historic Hanseatic trading links. The Lisa Von Lubeck will sail up the River Great Ouse and moor at Boal Quay for the Hanse Festival ... http://www.lynnnews.co.uk/news/Ship-of-old-looks-to.4461173....

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Sail Version: 1.0.0.16b

SAIL helps you to apply, renew, or learn about various social services offered by the State of Maryland. Information given to us in SAIL is kept strictly ... https://www.marylandsail.org/

Sail Martha's Vineyard a non-profit organization dedicated to ...

Sail Martha's Vineyard is a non-profit organization dedicated to celebrating and protecting the island's maritime heritage. It was conceived in 1992 to offer free ... http://www.sailmv.com/

Sail Caribbean — teen summer adventures in sailing, scuba, community ...

Teen summer adventure camps and programs including sailing, scuba diving, community service, marine biology, leadership, lifeguard training and watersports.http://www.sailcaribbean.com/

WVSA arts connection

SAIL works to address the needs of students with learning differences by providing creative learning environments. We have developed a ... http://www.sailpcs.org/

SAIL - Support for Active Independent Lives

Welcome to SAIL. SAIL - Support for Active Independent Lives is a vibrant non-profit membership organization of people 55+ who reside in the lovely Madison ... http://www.sailtoday.org/
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Enerpulse Completes B-round Of Financing: Robeco, SAIL Venture Partners and Altira Group Place Bet O...Investment boosts market penetration of innovative pulse plug.Windows Media - Video

Sailboat Sails into a Ferry

Sailboat Sails into a FerryA sailboat puts itself into a situation where only one thing will happen, it will get taken out. Ranked 2.97 / 5 | 381 views | 1 comment Click here to watch the item Submitted By:...Flash - Video

Boat made of reed and rope sets sai...

Boat made of reed and rope sets sailThe goal of the voyage to Spain is to prove that ancient man could have sailed across the ocean long before historians think. Jon Decker reports.Flash - Video

World's Largest Cruise Ship To Set ...

World's Largest Cruise Ship To Set SailThe world's largest cruise ship is getting ready to set sail. The ship holds as many as 4,000 passengers.Windows Media - Video

Sir Richard to Set Sail

Sir Richard to Set SailBillionaire daredevil Sir Richard Branson joins forces with Britain's America's cup sailing team, with Asheesh Advani, Virgin Money CEO and Sir Richard Branson, The Virgin Group...Windows Media - Video

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DakmanSail1.wmv

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sail2005-1.wmv

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Sail_Away_Helsinki.wmv

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Answers for Sail

hpthomas

How do I track sail powered and commercial vessels?

hpthomasCheck with Loyds Of London they offer such a service for Vessels that want to be tracked. The Vessels fly Signal flags DZ2 the international standard for report me to Loyds of London.
ANTHONY M

Has there ever been an attempt to put a modified sail on an automobile to enhance gas mileage?

ANTHONY MOnce your car accelerated over the wind speed, your sail would only create drag. So to drive on the interstate you'd need a favorable wind at near hurricane strength.
Chris B

What painting has boys on a small railroad car and a sail?

Chris Bthe experiene by c.walkuck
Rachel

How can I clean a sail with mildew on it??

RachelHi there. Mildew is a living plant. To kill it use a spray bottle with bleach and water (50-50 mix). This will take a few applications. Bleach will stain non white fabrics white. The next choice would...
valley_dweller

How does a large ship sail against the wind?

valley_dwellerSailors use a process called tacking where they point the bow of the boat at a 45 degree angle to the wind and sail off to one direction, then eventually make a 90 degree turn to the direction. The o...

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