Kitesurfing or Kiteboarding is a surface water sport that uses the wind to pull a rider through the water on a small surfboard or a kiteboard (similar to a wakeboard ). The terms kiteboarding and kitesurfing are interchangeable, with the USA and other countries referring to the sport as kiteboarding and the UK and a few other countries referring to the sport as kitesurfing. There are a number of different styles of kiteboarding, including freestyle (most common and utilises standard kite and board) or wake-style (flatter water using board with bindings) and wave-riding which is focused on big waves using a board designed for wave riding. A kitesurfer or kiteboarder uses a board with or without foot-straps or bindings, combined with the power of a large controllable kite to propel the rider and the board across the water. Windsurfingis a surface water sport that combines elements of surfing and sailing. It consists of a board usually 2 to 3 metres long, with a volume of about 60 to 250 liters, powered by wind on a sail. The rig is connected to the board by a free-rotating universal joint and consists of a mast, 2-sidedboom and sail. The sail area generally ranges from 2.5 m² to 12 m² depending on the conditions, the skill of the sailor and the type of windsurfing being undertaken. Sailing is the propulsion of a vehicle and the control of its movement with large (usually fabric) foils called sails. By changing the rigging, rudder, and sometimes the keel or centreboard, a sailor manages the force of the wind on the sails in order to move the vessel relative to its surrounding medium (typically water, but also land and ice) and change its direction and speed. Mastery of the skill requires experience in varying wind and sea conditions, as well as knowledge concerning sailboats themselves and an understanding of one’s surroundings.