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- 12-metre_class abstract "The 12 Metre class is a rating class for racing sailboats that are designed to the International rule. It enables fair competition between boats that rate in the class whilst retaining the freedom to experiment with the details of their designs. The designation "12 Metre" does not refer to any single measurement on the boat, it is not their overall length for example, but to the sum of the components of the formula that governs design and construction. Typically 12 Metre class boats range from 65 to 75 feet (about 20 to 23 m) in length overall; they are most often sloop-rigged, with masts roughly 85 feet (26 m) tall.The first 12 Metres were built in 1907. The 12 Metre class was used in the Olympic Games of 1908, 1912 and 1920 but few boats participated in these events. The 12 Metre class boats are best known as the boat design used in the America's Cup from 1958 to 1987.Competitiveness between boats in the class is maintained by requiring the boats to be in compliance with the 12 Metre formula. Designers and builders are required to take into account such things as the sail area, the boat length at the waterline and the boat girth (the measurement around the boat from one sideboard, under the keel, and then over the top on the opposite side back to the original side). The measurements are then weighted in the formula. For example, the present formula takes the square root of the sail area rather than total area. The combination of weighted measurements must be less than or equal to 12 metres. Designers are free to change any of the component variables, as well as other details, such as the size of the rudder and keel, so long as the corresponding changes elsewhere produce an ultimate sum of 12 metres and the resulting boat is both seaworthy and safe. Though disparity between boats are minimized by the rule, enough variation exists so that races are as much about design and construction as they are about seamanship and tactics.The "12 Metre" yachts are also referred to as "Twelves", "12s", or "12 Metres".".
- 12-metre_class thumbnail Freedom1.jpg?width=300.
- 12-metre_class wikiPageExternalLink history.asp.
- 12-metre_class wikiPageExternalLink NewsLeggi.asp?IDNews=6.
- 12-metre_class wikiPageExternalLink www.12mr.de.
- 12-metre_class wikiPageExternalLink www.12mr.de.
- 12-metre_class wikiPageExternalLink www.12mrclass.com.
- 12-metre_class wikiPageExternalLink www.12mrclass.com.
- 12-metre_class wikiPageExternalLink 30590.html.
- 12-metre_class wikiPageExternalLink www.sceptre1958.co.uk.
- 12-metre_class wikiPageExternalLink twelvemeter_designs.php.
- 12-metre_class wikiPageID "2178052".
- 12-metre_class wikiPageLength "16114".
- 12-metre_class wikiPageOutDegree "73".
- 12-metre_class wikiPageRevisionID "683902484".
- 12-metre_class wikiPageWikiLink 1983_Americas_Cup.
- 12-metre_class wikiPageWikiLink 1987_Americas_Cup.
- 12-metre_class wikiPageWikiLink 1987_Louis_Vuitton_Cup.
- 12-metre_class wikiPageWikiLink Alan_Bond.
- 12-metre_class wikiPageWikiLink Alan_Bond_(businessman).
- 12-metre_class wikiPageWikiLink Alexander_Robertson_&_Sons.
- 12-metre_class wikiPageWikiLink Alexander_Robertson_and_Sons_Ltd.
- 12-metre_class wikiPageWikiLink Alfred_Mylne.
- 12-metre_class wikiPageWikiLink Americas_Cup.
- 12-metre_class wikiPageWikiLink Australia_II.
- 12-metre_class wikiPageWikiLink Beam_(nautical).
- 12-metre_class wikiPageWikiLink Ben_Lexcen.
- 12-metre_class wikiPageWikiLink Bermuda_rig.
- 12-metre_class wikiPageWikiLink Category:12-metre_class_yachts.
- 12-metre_class wikiPageWikiLink Category:Classes_of_the_International_Sailing_Federation.
- 12-metre_class wikiPageWikiLink Category:Development_sailing_classes.
- 12-metre_class wikiPageWikiLink Category:Keelboats.
- 12-metre_class wikiPageWikiLink Category:Olympic_sailboat_classes.
- 12-metre_class wikiPageWikiLink Chain_girth.
- 12-metre_class wikiPageWikiLink Chris_Dickson_(sailor).
- 12-metre_class wikiPageWikiLink Courageous_(yacht).
- 12-metre_class wikiPageWikiLink Dacron.
- 12-metre_class wikiPageWikiLink Duralumin.
- 12-metre_class wikiPageWikiLink Erna_Signe.
- 12-metre_class wikiPageWikiLink File:Intrepid-12M.jpg.
- 12-metre_class wikiPageWikiLink Freeboard_(nautical).
- 12-metre_class wikiPageWikiLink Gaff_rig.
- 12-metre_class wikiPageWikiLink Henry_Sears.
- 12-metre_class wikiPageWikiLink International_Americas_Cup_Class.
- 12-metre_class wikiPageWikiLink International_Rule_(sailing).
- 12-metre_class wikiPageWikiLink International_rule_(sailing).
- 12-metre_class wikiPageWikiLink Intrepid_(yacht).
- 12-metre_class wikiPageWikiLink J-class_yacht.
- 12-metre_class wikiPageWikiLink KZ_7.
- 12-metre_class wikiPageWikiLink Keel.
- 12-metre_class wikiPageWikiLink Kiwi_Magic.
- 12-metre_class wikiPageWikiLink NYYC.
- 12-metre_class wikiPageWikiLink New_York_Yacht_Club.
- 12-metre_class wikiPageWikiLink Newport,_Rhode_Island.
- 12-metre_class wikiPageWikiLink Olin_Stephens.
- 12-metre_class wikiPageWikiLink Philip_Rhodes.
- 12-metre_class wikiPageWikiLink Polyethylene_terephthalate.
- 12-metre_class wikiPageWikiLink Royal_Yacht_Squadron.
- 12-metre_class wikiPageWikiLink Rudder.
- 12-metre_class wikiPageWikiLink Sail.
- 12-metre_class wikiPageWikiLink Sail_area.
- 12-metre_class wikiPageWikiLink Sailing_at_the_1908_Summer_Olympics_–_12_Metre.
- 12-metre_class wikiPageWikiLink Sailing_at_the_1908_Summer_Olympics_–_12_metre_class.
- 12-metre_class wikiPageWikiLink Sailing_at_the_1912_Summer_Olympics_–_12_Metre.
- 12-metre_class wikiPageWikiLink Sailing_at_the_1912_Summer_Olympics_–_12_metre_class.
- 12-metre_class wikiPageWikiLink Sailing_at_the_1920_Summer_Olympics.
- 12-metre_class wikiPageWikiLink Sceptre_(yacht).
- 12-metre_class wikiPageWikiLink Sir_Thomas_Glen-Coats,_2nd_Baronet.
- 12-metre_class wikiPageWikiLink Skeg.
- 12-metre_class wikiPageWikiLink Skerry_cruiser.
- 12-metre_class wikiPageWikiLink Skin_girth.
- 12-metre_class wikiPageWikiLink Sloop.
- 12-metre_class wikiPageWikiLink Sparkman_&_Stephens.
- 12-metre_class wikiPageWikiLink Square_Metre_Rule_(sailing).
- 12-metre_class wikiPageWikiLink Stars_&_Stripes_87.
- 12-metre_class wikiPageWikiLink Ted_Turner.
- 12-metre_class wikiPageWikiLink Ton_class.
- 12-metre_class wikiPageWikiLink Vim_(12_metre_yacht).
- 12-metre_class wikiPageWikiLink Waterline.
- 12-metre_class wikiPageWikiLink Waterline_length.
- 12-metre_class wikiPageWikiLink Winged_keel.
- 12-metre_class wikiPageWikiLink World_War_II.
- 12-metre_class wikiPageWikiLink File:1912_Erna_Signe.JPG.
- 12-metre_class wikiPageWikiLinkText "12 Meter".
- 12-metre_class wikiPageWikiLinkText "12 Metre".
- 12-metre_class wikiPageWikiLinkText "12 mR".
- 12-metre_class wikiPageWikiLinkText "12 metre yachts".
- 12-metre_class wikiPageWikiLinkText "12".
- 12-metre_class wikiPageWikiLinkText "12 metre".
- 12-metre_class wikiPageWikiLinkText "12-Meters".
- 12-metre_class wikiPageWikiLinkText "12-Metre".
- 12-metre_class wikiPageWikiLinkText "12-meter yachts".
- 12-metre_class wikiPageWikiLinkText "12-meter".
- 12-metre_class wikiPageWikiLinkText "12-metre class".
- 12-metre_class wikiPageWikiLinkText "12-metre".
- 12-metre_class wikiPageWikiLinkText "12-metre-class".
- 12-metre_class wikiPageWikiLinkText "12-metre_class".
- 12-metre_class wikiPageWikiLinkText "12mR class".
- 12-metre_class wikiPageWikiLinkText "12mR".
- 12-metre_class wikiPageWikiLinkText "International 12-metre class".