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Human-powered hydrofoil
A human-powered hydrofoil is a small hydrofoil watercraft propelled entirely by the muscle power of its operator(s).〔 Hydrofoils are the fastest water-based vehicles propelled solely by human power. They can reach speeds of up to ,〔
〕〔
〕〔(【引用サイトリンク】 Decavitator Human-Powered Hydrofoil )〕 easily exceeding the world records set by competitive rowing which stand at about . This speed advantage is achieved since hydrofoils lack a submerged body to provide buoyancy, greatly reducing the drag force.〔
(for example: Https://www.youtube.com/watch?v=k8Yv248B2-Y )
==Propulsion==
Means of propulsion include screw propellers, as in hydrocycles, aircraft propellers, as in the Decavitator, paddles, as in a Flyak, and flapping wings, as detailed below.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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