Ключевые слова: activity, aqua, aquatic, australia, boarding, buoyant, cable, convex, electricallydriven, exercise, fitness, fun, handle, helmet, hydrodynamic, jumping, jumps, learning, life jacket, man, mechanism, park, people, plane, planing, pulling, recreation, recreational, ride, riding, rope, ski, skiing, speed, sport, spray, swim, tow, towing, turning, wake, wake board, wake boarding, water, water skier,