NationMaster - Encyclopedia: 5.5 Metre (keelboat)

The International 5.5 Metre Class was created to yield a racing keel boat giving a sailing experience similar to that of the International 6 Metre Class, but at a lower cost. A Keelboat is a keeled boat built for the navigation of rivers. ...

The main class regulation is a restriction on a single quantity output from a formula involving the boat's rating length L, weight (expressed as a displacement D) and sail area S; the regulation states that the output of this formula must not exceed 5.500 metres. There is considerable scope for variations in design while still meeting this restriction, and as a result each 5.5 metre boat is unique.

If the design parameters of a proposed new boat result in a formula output exceeding 5.5 metres, then one or more of the parameters must be suitably adjusted. Performance data gained from testing models towed in a long water tank (referred to in yacht design as 'tank testing') can suggest optimal combinations of parameters.

The first boats conforming to the 5.5 metre rule were built in 1949. The 5.5 metre design was very successful and replaced the International 6 Metre as a class sailed in the Olympic Games. 1949 (MCMXLIX) was a common year starting on Saturday (the link is to a full 1949 calendar). ... For months before the Olympic Games, runners relay the Olympic Flame from Olympia to the opening ceremony. ...

The Formula

$5.500 mbox{ metres} ge 0.9 cdot left( frac {L cdot sqrt[2]{S}} {12 cdot sqrt[3]{D}} + frac {L cdot sqrt[2]{S}} {4} right)$
where

External links

List of ISAF international keelboat classes

11 mR 12 mR 2.4 mR 5.5 mR 6 mR 8 mR Dragon Etchells Flying Fifteen H-boat J/22 J/24 Melges 24 Open 50 Monohull Open 60 Monohull Soling Sonar Star Tempest Yngling The International Sailing Federation is the world governing body for the sport of sailing, particularly yacht and dinghy racing. ... The 11:Metre is a sloop-rigged yacht with One Design rules that specify every hardware and rope. ... The 12-metre class sailing vessels replaced the huge and expensive J-class yachts that were raced in the 1930s. ... Paralympic Class 2. ... Former Olympic Class The Dragon is a keelboat designed by Johan Anker in 1929. ... Etchells are a one design class of sailing boat. ... The Flying Fifteen is a keelboat designed by Uffa Fox in 1947. ... The H-Boat is a keelboat designed by Hans Groop of Finland in 1967, with some minor modifications by Paul ElvstrÃ¶m in 1971. ... The International J/22 is a popular fixed keel racing sailboat normally raced with a crew of three people. ... The International J/24 is one of the worlds most popular one-design keelboats. ... The Melges 24 is a one-design class of sailboat commonly used for racing. ... The International Monohull Open Classes Association (IMOCA) is an international assocation within the sport of sailing which administers the monohull Open 50 and Open 60 classes of sailboats. ... The International Monohull Open Classes Association (IMOCA) is an international assocation within the sport of sailing which administers the monohull Open 50 and Open 60 classes of sailboats. ... A soling is a small class of keelboat that was used as the Olympic keelboat from 1972-2000. ... A Sonar start The Sonar is a 7 m (23 ft) one-design keelboat for three to five people. ... A Star (or Starboat) is a 6. ... The Tempest is a keelboat designed by Ian Procter. ... Yngling (keelboat) - Wikipedia /**/ @import /skins-1. ...

Classes of Keelboats (Worldwide List)

10 Metre | 11 Metre | 12 Metre | 2.4 Metre | 5 Metre | 5.5 Metre | 6 Metre | 8 Metre | Aloha | Antrim 27 | Catalina Yachts | Catalina 30 | Colin Archer | Contessa 32 | Down East Yachts | Dragon | Etchells | Farr 40 | Fife | Flying Fifteen | Folkboat | Freedom Yachts | Guppy 13 | H-boat | Hallberg-Rassy | International 806 | International Americas Cup Class | IOD | J/22 | J/24 | J-Class | Kendall 32 | Knarr |Laser SB3 | Maxi Yacht | Melges 24 | Monark 540 | Moore 24 | Open 50 Monohull | Open 60 Monohull | Pearson Triton | Ross 930 | San Juan 24 | Sea Sprite 34 | Shields | Soling | Sonar | Soverel 33 | Squib | Star | Stella | Sydney 38 | Tartan Ten | Tempest | Top Hat 25 | Triton | Vindö | Westsail 32 | Yngling The 11:Metre is a sloop-rigged yacht with One Design rules that specify every hardware and rope. ... The 12-metre class sailing vessels replaced the huge and expensive J-class yachts that were raced in the 1930s. ... Paralympic Class 2. ... Aloha Yachts were a range of sailing keelboats manufactured in Whitby, Ontario, Canada by Ouyang Boat Works, founded by Ti Ouyang who had previously worked for Whitby Boat Works. ... The current version of the article or section reads like an advertisement. ... The Catalina 30 is a thirty foot-long fiberglass sailboat first produced in 1974 by the Catalina Yachts Company in California. ... Colin Archer (22 July 1832 - 3 February 1921) was a naval architect and shipbuilder from Larvik, Norway. ... It was at the London Boat show in 1971 that the Contessa 32 made her first public appearance. ... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... Former Olympic Class The Dragon is a keelboat designed by Johan Anker in 1929. ... Etchells are a one design class of sailing boat. ... Fife Yachts were luxury, wooden yachts built in the first half of the 20th Century in the small Scottish village of Fairlie. ... The Flying Fifteen is a keelboat designed by Uffa Fox in 1947. ... The Nordic Folkboat is a clinker built wooden sloop and was designed in 1942 by the Scandinavian Yacht Racing Union. ... Freedom Yachts is the maker of the Freedom (sail) and Legacy (power) yacht brands. ... A Pocket cruiser, Microcruiser or Pocket yacht is a small sailboat with a cabin, whose length is at or under 20 feet (6 m), with some examples as short as 10 to 12 feet (3 to 3. ... The H-Boat is a keelboat designed by Hans Groop of Finland in 1967, with some minor modifications by Paul ElvstrÃ¶m in 1971. ... Hallberg-Rassy AB (HR) is a famous international Swedish shipyard for producing exclusive sailing yachts. ... The International 806 is a sloop-rigged sailing yacht that is popular in northern and central Europe. ... The Americas Cup is the most famous trophy in the sport of yachting, and the oldest active trophy in sports. ... The International J/22 is a popular fixed keel racing sailboat normally raced with a crew of three people. ... The International J/24 is one of the worlds most popular one-design keelboats. ... During the 1930s J-class yachts were built to race in the Americas Cup. ... A Westsail 32 sailing off Northern California. ... The knarr (plural: knarrer) was the generic name for viking trade and mercantile ships. ... The Laser SB3 is a one-design class of sailboat commonly used for racing. ... A maxi yacht, or simply maxi, is a large racing sailboat. ... The Melges 24 is a one-design class of sailboat commonly used for racing. ... Monark 540 is a relatively small sailboat (5 meters 40 centimeters), from around 1975. ... The Moore 24 is a type of sailboat. ... The International Monohull Open Classes Association (IMOCA) is an international assocation within the sport of sailing which administers the monohull Open 50 and Open 60 classes of sailboats. ... The International Monohull Open Classes Association (IMOCA) is an international assocation within the sport of sailing which administers the monohull Open 50 and Open 60 classes of sailboats. ... The Pearson Triton, also known as Triton, was one of the first production fiberglass sailboats manufactured in the United States. ... Ross 930 Fleet The Ross 930 is a class of fast cruiser-racer yachts named after its designer, New Zealander Murray Ross. ... The San Juan 24 is one of the most versitile keelboats for its size. ... The Sea Sprite 34 is the largest of the Sea Sprite sailing vessels. ... In 1963 Cornelius Shields, one of the foremost proponents of one-design sailing in the U.S. conceived of a modern followup to the International One Design. ... A soling is a small class of keelboat that was used as the Olympic keelboat from 1972-2000. ... A Sonar start The Sonar is a 7 m (23 ft) one-design keelboat for three to five people. ... The Soverel 33 was launched in 1983 by renowned racing sailor and designer Mark Soverel. ... A Squib is a type of small sailboat originally designed in 1967. ... A Star (or Starboat) is a 6. ... The Stella 26 is a one design bermudian (marconi) sloop rigged cruiser / racer designed by the noted yacht designer C.R.(Kim) Holman in 1959. ... The Tarten Ten, nicknamed T-10, is a 10 meter keelboat designed by Sparkman & Stephens in 1978. ... The Tempest is a keelboat designed by Ian Procter. ... The internal plan of a Top Hat 25 Top Hat 25 is an Australian made sailing yacht. ... The Pearson Triton, also known as Triton, was one of the first production fiberglass sailboats manufactured in the United States. ... VindÃ¶ was a little boat yard on the Swedish west coast, situated between Orust and the mainland outside Uddevalla. ... A Westsail 32 sailing off Northern California. ... Yngling (keelboat) - Wikipedia /**/ @import /skins-1. ...