This paper examines hydrofoils, their history and their markets, and concludes that a second-gene ration family of American designs is in order. A series of prototypes is described for the earlier members of this family, and historic data are utilized to relate their scheduling and their horse-power. “New” information in this paper includes power versus date trends for hydrofoils, a nomograph relating hydrofoil parameters and costs, and an up-dating of past tabulations of hydrofoils and some of their descriptive measures. It is specifically concluded that attack of the indicated second-generation markets should begin without delay.
