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A Class History

November 15, 2004
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In 1961, the International Yacht Racing Union established a Box Rule for four different multihull development classes. D, C, B, and A, which was the smallest and had the following basic dimension limitations: 18′ overall length, 7’6″ beam, 150 sq. ft. of sail area including mast. Since then, the class added a minimum weight requirement of 165 pounds to prevent the development of super-light, throwaway boats that could unnecessarily raise the cost of competing. The 165-pound minimum has worked out well, with many boats at this weight still competitive after many years of sailing.

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