Sailing refers to using sailboats for sporting purposes. It can be recreational or competitive. Sailing is the main variety of yachting, and competitive sailing the main variety of yacht racing. A sailing competition is known as a regatta, usually consists of multiple individual races, where the boat that performs best in each race is the overall winner. There is a broad variety of kinds of races and sailboats used for racing from large yacht to dinghy racing. Much racing is done around buoys or similar marks in protected waters, while some longer offshore races cross open water. All kinds of boats are used for racing, including small dinghies, catamarans, boats designed primarily for cruising, and purpose-built raceboats. The Racing Rules of Sailing govern the conduct of yacht racing, windsurfing, kitesurfing, model boat racing, dinghy racing and virtually any other form of racing around a course with more than one vessel while powered by the wind.