Hydrofoil

For other types of foil, see Foil (fluid mechanics).

A hydrofoil is a lifting surface, or foil, that operates in water. It is similar in appearance and purpose to aerofoils used by airplanes. Boats that use hydrofoil technology are also simply termed hydrofoils. As a craft gains speed, the hydrofoils lift the boat's hull out of the water, decreasing drag and allowing greater speeds.

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