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Show JZ JZ? 7 lie Development of the Racing JM. By John R. Spcnru. 0HEDICTIOXS are made that ns nn experiment In the shapes of hulls the races of this year nro to bo of greater Interest than any ever held. In the races of tho Galatea period the stem roso vertically verti-cally out of the water, while tho tern overhung the water by a few feet. A broadside view of either of them showed n lateral plane that looked llko 11 sled runner cut .from n plank by n country boy. Seen from another point of view tho bow of tho yacht was found to bo a vertical wedge, thin and sharp, llko the blade of 11 woodman's ns; nnd It was n question among builders whether the wedge should have lines llko an ux or hollow lines like n razor. Tho stern below tho waterlluc was nlso something of n vertical wedge, though n blunter ono than the bow. In general dimensions tho Gnlatea was 102 feat long over all, eighty-seven feet ou the wutcrllne, ilftean feet wide, perhaps ten feet deep below decks, und her draught wns thirteen feet six Inches. Her successful suc-cessful opponent, the Mayflower, wit's 100 feet long over all, was twenty-three feet wide, and was perhaps seven feet deep under the deck, nnd she drew ten foot of water. With theso facts lu mind wo can see how far wo have traveled In changing tho shapes of boats of that class. For Shamrock III,, though but three feet longer on tho waterlliie, ls HO feet long over nil. Tho old boat had nn overhang of fifteen feet, nil of which was nft, whllo tho nuw boat has an overhang of twenty-five feet at each end. Tho new defender, when compared with tho Mayflower, shows almost exactly the same changes In length. ltoughly spcaklug each end of tho old yachts was a wedgo that rode tho water with Its edge perpendicular. The forward half 0" Shamrock III. Is not unlike the half of u cone split Icngthwlto, while tho stern half Is drawn out Into 11 long, thin, horizontal wedge a wedgo with Its edgo laid parallel with tho water. At the stern tho challenger ls a scow. Tho is.cll.incc, however Is n scow at both ends, in splto of tho fact that her bow comes to n point above water. Each end presents a lino horizontal wedge to tho water, and thereforo In every sailing lino sho Is a scow. Wo used to stand In front of n yacht nnd marvel nt the thinness of the vertical wedge. Now wo stand off nbentu and look with delight at the sweep of tho fore nnd nft lines. One sees nt a glnnco why tho modern hull Is more cosily, and therefore more swiftly, driven through the water. The modern hull presents lino or ncuto angles to tho water, wlieio tho old hull presented wldo or obtuso angles. Tho World's Woik. . . |