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Hydrofoils are the fastest water-based vehicles propelled solely by human power. They can reach speeds of up to 34 km/h (21 mph; 18 kn), [ 1 ] [ 2 ] [ 3 ] easily exceeding the world records set by competitive rowing which stand at about 20 km/h (12 mph; 11 kn).
A hydrofoil is a lifting surface, or foil, that operates in water. They are similar in appearance and purpose to aerofoils used by aeroplanes. Boats that use hydrofoil technology are also simply termed hydrofoils. As a hydrofoil craft gains speed, the hydrofoils lift the boat's hull out of the water, decreasing drag and allowing greater speeds.
Decavitator is a human-powered hydrofoil equipped with pedals and an air propeller that was built by the Massachusetts Institute of Technology. It holds the human-powered speed record on water. [1] The vehicle was displayed hanging in the entry lobby of the Museum of Science, Boston until 2015. It is currently in storage at MIT.
Navier produces all-electric boats that glide above the water using a hydrofoil design. [16] [17] These boats combine hydrofoil technology, rechargeable batteries, advanced computer software, and joystick-controlled maneuverability. Its underwater foils lift the hull above the water, reducing hydrodynamic resistance, while joystick operation ...
HD-4 or Hydrodome number 4 was an early research hydrofoil watercraft developed by the scientist Alexander Graham Bell. It was designed and built at the Bell Boatyard on Bell's Beinn Bhreagh estate near Baddeck, Nova Scotia. In 1919, it set a world marine speed record of 70.86 miles per hour (114.04 km/h).
The site also features memorabilia associated with Bell's experiments, including: the original hull of a hydrofoil boat, the HD-4, that set a world marine speed record in Baddeck by reaching speeds of over 112 km/h (over 70 mph) in 1919; a full-scale replica of that boat, the AEA Silver Dart, which in 1909 J.A.D. MacCurdy piloted up into the ...
The collected power is then transferred to the water with a paddle wheel, flippers, [8] [9] [10] or to the air or water with a propeller. Pedaled craft include: Amphibious cycle; Hydrocycle; Pedal-powered kayak [8] [9] [10] Pedal-powered submersible or midget submarine [11] [12] Pedal-powered hydrofoil; Pedalo
The Sparviero-class fast attack hydrofoil was designed in Italy by the Alinavi society, a consortium of the American company Boeing, the Italian government's naval research branch, and Carlo Rodriquez , a Messina-based builder of commercial hydrofoils, based on Boeing's Tucumcari for the United States Navy.