The use of the sharpie began to spread to other areas almost immediately after its appearance at New Haven. As early as 1855 sharpies of the 100-bushel class were being built on Long Island across the Sound from New Haven and Bridgeport, and by 1857 there were two-masted, 150-bushel sharpies in lower New York Harbor. Sloop-rigged sharpies 24 to 28 feet long and retaining the characteristics of the New Haven sharpies in construction and most of its basic design features, but with some increase in proportionate beam, were extensively used in the small oyster fisheries west of New Haven. There were also a few sloop-type sharpies in the eastern Sound. In some areas this modification of the sharpie eventually developed its own characteristics and became known as the "flattie," a type that was popular on the north shore of Long Island, on the Chesapeake Bay, and in Florida at Key West and Tampa. [Illustration: FIGURE 11.--North Carolina sharpie schooner hauled up for painting.] The sharpie's rapid spread in use can be accounted for by its low cost, light draft, speed, handiness under sail, graceful appearance, and rather astonishing seaworthiness. Since oyster tonging was never carried on in heavy weather, it was by chance rather than intent that the seaworthiness of this New Haven tonging boat was discovered. There is a case on record in which a tonging sharpie rescued the crew of a coasting schooner at Branford, Connecticut, during a severe gale, after other boats had proved unable to approach the wreck. However, efforts to improve on the sharpie resulted in the construction of boats that had neither the beauty nor the other advantages of the original type. This was particularly true of sharpies built as yachts with large cabins and heavy rigs. Because the stability of the sharpie's shoal hull was limited, the added weight of high, long cabin trunks and attendant furniture reduced the boat's safety potential. Windage of the topside structures necessary on sharpie yachts also affected speed, particularly in sailing to windward. Hence, there was an immediate trend toward the addition of deadrise in the bottom of the yachts, a feature that sufficiently increased displacement and draft so that the superstructure and rig could be better carried. Because of its large cabin, the sharpie yacht when under sail was generally less workable than the fishing sharpie. Although it was harmful to the sailing of the boat, many of the sharpie yachts had markedly increased beam. The first sharpie yacht of any size was the _Lucky_, a half-model of which is in the Model Room of the New York Yacht Club. The _Lucky_, built in 1855 from a model by Robert Fish, was 51 feet long with a 13-foot beam; she drew 2 feet 10 inches with her centerboard raised. According to firsthand reports, she was a satisfactory cruiser, except that she was not very weatherly because her centerboard was too small.