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Under the 12 metre class rule, the allowed sail area is an inverse function of the boat length and weight. Her stability advantage allowed Australia II to carry more sail although the boat was lighter. Along with Australia II ' s efficient sail design, this winged keel was one of the factors contributing to Australia II ' s success. Total ...
Australia II was designed by Ben Lexcen, built by Steve Ward, owned by Alan Bond and skippered by John Bertrand. [2] Lexcen's Australia II design featured a reduced waterline length and a short chord winged keel which gave the boat a significant advantage in manoeuvrability and heeling moment (lower ballast centre of gravity) but it was a significant disadvantage in choppy seas.
Benjamin Lexcen AM (born Robert Clyde Miller, 19 March 1936 – 1 May 1988) was an Australian yachtsman and marine architect.He is famous for the winged keel design applied to Australia II which, in 1983, became the first non-American yacht to win the prestigious America's Cup in 132 years.
The boat was designed by Ben Lexcen and skippered by John Bertrand. The revolutionary " winged keel " of the Australian yacht was a subject of controversy from the outset of the challenger series, with the New York Yacht club alleging that the winged keel boat was not a legal 12 Meter, and that the keel design itself was the result of Dutch ...
A keel boat, [1] keelboat, [1] or keel-boat [2] is a type of usually long, narrow cigar-shaped riverboat, [1] or unsheltered water barge which is sometimes also called a poleboat—that is built about a slight keel and is designed as a boat built for the navigation of rivers, shallow lakes, and sometimes canals that were commonly used in ...
The keel is the bottom-most longitudinal structural element of a watercraft. On some sailboats, it may have a hydrodynamic and counterbalancing purpose as well. The laying of the keel is often the initial step in constructing a ship. In the British and American shipbuilding traditions, this event marks the beginning date of a ship's construction.
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Yngling. The Yngling is a racing keelboat, built predominantly of fibreglass, with wood trim.It has a fractional sloop rig with aluminum spars. The hull has a spooned raked stem, a raised counter reverse transom, an internally mounted spade-type rudder controlled by a tiller and a swept fixed fin keel.