User:Merfyn Owen/ULDB

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ULDB A ULDB (Ultra Light Displacement Boat) is a generic term that describes a racing sailboat that has unusually light displacement compared to the average racing yacht of their time, which were often hamstrung in terms of outright performance by rating rules such as the [Offshore Rule] On the west coast of the United States in the late 1970’s a number of ULDB yachts designed by Bill Lee dominated the mainly downwind Transpac Race. At the same time, in Europe ULDB’s which were considered as outside of the norm were encouraged by the Royal western Yacht Club of England to enter the [Handed Transatlantic ]and Two Handed Transtlantic Yacht Races. The 1984 Single-Handed Transatlantic Race included the American entrant Thursdays Child which was one of the first ULDB’s designed specifically rather than be converted to race around the world in the [Challenge], the new single-handed round the world event. At 60’ overall length she was a ULDB which featured water ballast in place of crew on the rail and one of the early fore-runners of a class known as the Open 60. The yachts designed for the RWYC and BOC races conformed to rules that developed around the same time and included a 10 degree static stability rule (with ballast added) that has remained to this day a type forming feature of the Open 60 which in 2000 developed into the [[1]]Open 60. ULDB’s have been a feature of ocean racing since their early development and still exist today around the world, particularly on the west coast of the USA and in class’s such as [Transat], [40 ], IMOCA Open 60, and [70], all of which the founding designers of this type of yacht would recognise as ULDB’s. References (as well as inserted internal Wiki website links) "Against All Odds" Alan Nebauer, McGraw Hill "Into the Wind" Barteleme and Hicks, Evening Post Publishing Company "The Loneliest Race" Paul Gelder, Adlard Coles