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Windfoiling (or foil windsurfing) is a surface water sport that is the hydrofoiling evolution of windsurfing, as well as typical sailing boats and sailing hydrofoils. It uses similar equipment to windsurfing with a normal or slightly evolved rig on a normal or specialist foil board.
The board has a hydrofoil mounted in the fin box. The hydrofoil lifts the board off the water and enables the rider to achieve improved speeds in light winds due to the reduced drag. [1] [ better source needed ]
The foil transmits a hydrodynamic lift force to the board, capable of lifting it out of the water. The goal is to reduce drag and increase performance.[ need quotation to verify ]
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Windfoiling debuted as an Olympic event in 2024. [2] [3] They used the Starboard IQFoil gear. [4] [5]
| Event [6] [3] [7] | Foiling Model |
|---|---|
| Men's Windsurfer Women's Windsurfer | IQFoil |
| Men's and Women's Kite | Formula Kite |
| Mixed Two Person Multihull | Nacra 17 |
| Manoeuvres |  | |
|---|---|---|
| Equipment | ||
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.
Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the water, on ice (iceboat) or on land over a chosen course, which is often part of a larger plan of navigation.
Kiteboarding or kitesurfing is a sport that involves using wind power with a large power kite to pull a rider across a water, land, snow, sand, or other surface. It combines the aspects of paragliding, surfing, windsurfing, skateboarding, snowboarding, and wakeboarding. Kiteboarding is among the less expensive and more convenient sailing sports.
Windsurfing is a wind-propelled water sport that is a combination of sailing and surfing. It is also referred to as "sailboarding" and "boardsailing", and emerged in the late 1960s from the Californian aerospace and surf culture. Windsurfing gained a popular following across Europe and North America by the late 1970s and had achieved significant global popularity by the 1980s. Windsurfing became an Olympic sport in 1984.
Planing is the mode of operation for a waterborne craft in which its weight is predominantly supported by hydrodynamic lift, rather than hydrostatic lift (buoyancy).
A foilboard, also known as a hydrofoil board or foil surfboard, is a type of board used in water sports; it is distinct from surfboards in that it has a hydrofoil rather than fins mounted underneath. This hydrofoil design allows the surfboard and its rider to rise above the water’s surface, allowing for fast speeds and increased maneuverability in a wide range of surf conditions. Foilboards are becoming increasingly popular across many water sports, including surfing, kiteboarding, windsurfing, and wakeboarding. Foilboards have also been used in competitions, with riders reaching speeds of up to 30 km/h while performing acrobatic maneuvers such as flips and twists.
A windsport is any type of sport which involves wind-power, often involving a non-rigid airfoil such as a sail or a power kite. The activities can be land-based, on snow, on ice or on water. Windsport activity may be regulated in some countries by aviation/maritime authorities if they are likely to interfere with other activities. Local authorities may also regulate activity in certain areas, especially on crowded beaches and parks.
The Moth is a small development class of sailing dinghy. Originally a small, fast home-built sailing boat designed to plane, since 2000 it has become an expensive and largely commercially produced boat designed to hydroplane on foils though many are still built at home, typically at much lower cost.
Robert Staunton Naish is an American athlete and entrepreneur who has won 24 World Championship Windsurfing titles. He is also considered a pioneer of kiteboarding and standup paddleboarding.
A sailing hydrofoil, hydrofoil sailboat, or hydrosail is a sailboat with wing-like foils mounted under the hull. As the craft increases its speed the hydrofoils lift the hull up and out of the water, greatly reducing wetted area, resulting in decreased drag and increased speed. A sailing hydrofoil can achieve speeds exceeding double and in some cases triple the wind speed.
High-performance sailing is achieved with low forward surface resistance—encountered by catamarans, sailing hydrofoils, iceboats or land sailing craft—as the sailing craft obtains motive power with its sails or aerofoils at speeds that are often faster than the wind on both upwind and downwind points of sail. Faster-than-the-wind sailing means that the apparent wind angle experienced on the moving craft is always ahead of the sail. This has generated a new concept of sailing, called "apparent wind sailing", which entails a new skill set for its practitioners, including tacking on downwind points of sail.
Forces on sails result from movement of air that interacts with sails and gives them motive power for sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and sail-powered land vehicles. Similar principles in a rotating frame of reference apply to windmill sails and wind turbine blades, which are also wind-driven. They are differentiated from forces on wings, and propeller blades, the actions of which are not adjusted to the wind. Kites also power certain sailing craft, but do not employ a mast to support the airfoil and are beyond the scope of this article.
The Nacra 17 is a performance catamaran used for sailing. It was designed in 2011, went into production in 2012 and has been the focus of multihull sailing at the Olympic Games since its conception.
The F50 is a one-design foiling catamaran used in the SailGP race series. The name is an abbreviation of "Foiling" and "a hull length of 50 feet". The F50s are adapted from the AC50s used in the America's Cup, with modifications including new control systems and modular wingsails. The F50s are one of the fastest racing classes in history, with a predicted top speed of 52.2 knots ; the current F50 speed record, achieved by the France SailGP Team at the Range Rover France Sail Grand Prix in 2022, stands at 53.96 knots. On July 18 2024 Canada SailGP Team achieved a top speed of 55.06 knots whilst testing new T-shaped foils, to replace L-shaped foils, in San Francisco.
iQFoil is a windsurfing class selected by World Sailing to replace the RS:X for the 2024 Summer Olympics. The discipline has similarities to Formula Windsurfing, however a notable difference is that sailors only use one sail. The sail size is 9 m2 for the men and 8 m2 for the women. The rider has a choice between using a hydrofoil or a conventional 68 cm fin.
Wing foiling or wing surfing or winging is a wind propelled water sport that developed from kitesurfing, windsurfing and surfing. The sailor, standing on a board, holds directly onto a wing. It generates both upward force and horizontal force which can be used for propulsion and thus moves the board across the water. The recent development of foilboards, which plane very early on a hydrofoil fin and thereby lift off the water producing low friction, represent the ideal complementary hydrodynamic platform for wings.
Formula Kite is the kitesurfing class chosen by World Sailing for the 2024 Summer Olympics. The class features a foil kite and a board with a hydrofoil. The equipment is not one-design, but instead competitors use their choice of approved production equipment. The International Kiteboarding Association (IKA) manages the class. The class is for men and women.
Huang Qibin is a Chinese Formula Kite professional sailing athlete. He became the Asian & Oceania champion In 2023.