On the drawing board in Seattle months ago, Stanley Sayres's two-ton, 29-ft. hydroplane, Slo-Mo-Shun IV, looked to him like the fastest boat in the world. When he got it onto Lake Washington this summer for its first official run, Owner Sayres rocketed to a world record 160 m.p.h. (TIME, July 10).
A month later, with Designer Ted Jones at the wheel, Slo-Mo-Shun IV won motor-boating's famed Gold Cup. Last week on the Detroit River Slo-Mo-Shun took the last big prize within reach. It ran away with the international Harmsworth Trophy and, in the doing, pretty well established itself as the greatest speed...