Can the same lift force be applied to transportation by water?
A.: Yes! Such wing-like surfaces are known as hydrofoils, a name which is sometimes also applied to boats and ships using them. The hydrofoils extend below the hull and across its width–e.g., one in front and one in the rear. The boat starts moving like an ordinary boat, floating on the water. Then, when an appropriate speed is reached, the hydrofoils lift the hull out of the water, leaving only the propellers and hydrofoils submerged. Such boats are capable of much greater speeds than ordinary motor boats, e.g. 70 mph and more.
