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THE HISTORY OF YACHTING
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As we have seen, the first boat fitted with a sliding keel was constructed by Captain Schank, at Boston, Massachusetts, in 1774. Upon his return to England, Schank continued his experiments, and in 1778 built a boat at Deptford, fitted with
three sliding keels. This proved so successful that in the year 1789 he prevailed upon the Navy Board to allow him to construct two boats of thirteen tons each at Deptford, one of the old type, the other with sliding keels. In 1790 a competitive
