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Waterski
Water skiing (also waterskiing or water-skiing) is a Surface water sports, surface water sport in which an individual is pulled behind a boat or a Cable skiing, cable ski installation over a body of water, skimming the surface on two skis or one ski. The sport requires sufficient area on a stretch of water, one or two skis, a tow boat with tow rope, two or three people (depending on local boating laws), and a personal flotation device. In addition, the skier must have adequate upper and lower body strength, muscular endurance, and good balance. There are water ski participants around the world, in Asia and Australia (continent), Australia, Europe, Africa, and Americas, the Americas. In the United States alone, there are approximately 11 million water skiers and over 900 sanctioned water ski competitions every year. Australia boasts 1.3 million water skiers. There are many options for recreational or competitive water skiers. These include speed skiing, trick skiing, show skii ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Waterski & Wakeboard Federation
The International Waterski & Wakeboard Federation (IWWF) is the world governing body for all towed water sports. Founded in Geneva, Switzerland in 1946, it is recognized by the International Olympic Committee (IOC) as the sole authority governing all towed water sports and has 91 affiliated member federations worldwide. The IWWF is also an affiliate member of the Global Association of International Sports Federations (GAISF) and is one of the seven founding sports of the World Games. The IWWF’s competitive and recreational towed water sports divisions include the following: Tournament (3-Event Waterskiing), Wakeboard, Barefoot skiing, Barefoot, Show Skiing, Cable Wakeboard, Cableski, Water Ski Racing, Ski Racing, and Disabled Skiing. Functions of the IWWF: * Promotes and develops towed water sports worldwide through National Federations * Develops technical rules for all towed water sport disciplines * Organizes educational and training programs for technical officials and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable Skiing
Cable skiing is a way to water ski (or wakeboard), in which the skier's rope and handle are pulled by an electrically-driven cable, whereas traditionally a waterskier is pulled by a motorboat. The mechanism consists of two cables running parallel to one another with carriers between them every 80 metres. The carriers are metal tubes that can hook up tow ropes with riders. Tow ropes are detached and attached at the same time without slowing the system down, which is a main reason for its high efficiency. With a main cable of 800 metres long, 10 riders can waterski or wakeboard at the same time. The speed of the main cable can be up to 38 mph (61 km/h), and slalom skiers can reach much higher speeds. The most common speed is 19 mph (31 km/h), which suits wakeboarders best. The cable is generally suspended 26–30 feet (8–9 metres) above the water. This makes for a different feel than when riding behind a boat, whether wakeboarding or water skiing. The high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cable Skiing
Cable skiing is a way to water ski (or wakeboard), in which the skier's rope and handle are pulled by an electrically-driven cable, whereas traditionally a waterskier is pulled by a motorboat. The mechanism consists of two cables running parallel to one another with carriers between them every 80 metres. The carriers are metal tubes that can hook up tow ropes with riders. Tow ropes are detached and attached at the same time without slowing the system down, which is a main reason for its high efficiency. With a main cable of 800 metres long, 10 riders can waterski or wakeboard at the same time. The speed of the main cable can be up to 38 mph (61 km/h), and slalom skiers can reach much higher speeds. The most common speed is 19 mph (31 km/h), which suits wakeboarders best. The cable is generally suspended 26–30 feet (8–9 metres) above the water. This makes for a different feel than when riding behind a boat, whether wakeboarding or water skiing. The high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barefoot Skiing
Barefoot skiing is water skiing behind a motorboat without the use of water skis, commonly referred to as "barefooting". Barefooting requires the skier to travel at higher speeds (30-45 mph/50–70 km/h) than conventional water skiing (20-35 mph). The necessary speed required to keep the skier upright varies by the weight of the barefooter and can be approximated by the following formula: (W / 10) + 20, where W is the skier's weight in pounds and the result is in miles per hour. It is an act performed in show skiing, and on its own. History of barefooting Barefoot water skiing originated in Winter Haven, Florida. According to the Water Ski Hall of Fame, and witnesses of the event, 17-year-old A.G. Hancock became the first person ever to barefoot water ski in 1947. That same year, Richard Downing "Dick" Pope Jr., was the first person ever to be photographed barefooting, stepping off his skis on a training boom alongside the boat. In 1950, the first barefoot comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wakeboarding
Wakeboarding is a water sport in which the rider, standing on a wakeboard (a board with foot bindings), is towed behind a motorboat across its wake and especially up off the crest in order to perform aerial maneuvers. A hallmark of wakeboarding is the attempted performance of midair tricks. Wakeboarding was developed from a combination of water skiing, snowboarding and surfing techniques. The rider is usually towed by a rope behind a boat, but can also be towed by cable systems and winches, and be pulled by other motorized vehicles like personal watercraft, cars, trucks, and all-terrain vehicles. The gear and wakeboard boat used are often personalized to each rider's liking. Though natural watercourses such as rivers, lakes and areas of open water are generally used in wakeboarding, it is possible to wakeboard in unconventional locations, such as flooded roads and car parks, using a car as the towing vehicle. Wakeboarding is done for pleasure and competition, ranging from f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ski Nautique 200 - OB
A ski is a narrow strip of semi-rigid material worn underfoot to glide over snow. Substantially longer than wide and characteristically employed in pairs, skis are attached to ski boots with ski bindings, with either a free, lockable, or partially secured heel. For climbing slopes, ski skins (originally made of seal fur, but now made of synthetic materials) can be attached at the base of the ski. Originally intended as an aid to travel over snow, they are now mainly used recreationally in the sport of skiing. Etymology and usage The word ''ski'' comes from the Old Norse word which means "cleft wood", "stick of wood" or "ski". In Old Norse common phrases describing skiing were ''fara á skíðum'' (to travel, move fast on skis), ''renna'' (to move swiftly) and ''skríða á skíðum'' (to stride on skis). In modern Norwegian the word ''ski'' has largely retained the Old Norse meaning in words for split firewood, wood building materials (such as bargeboards) and roundpole fence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Water Sports
The following is a list of surface water sports. These are sports which are performed atop a body of water. Boat racing Motorized racing * Hydroplane racing * Bathtub racing Rowing * Canoeing * Kayaking * Sculling * Dragon boat racing Sailing * Yacht racing * Sailing hydrofoil, Hydrofoil sailing. This recent development in the high-speed sailing arena has evolved most in the International Moth class of racing dinghy. These boats have a "T" shaped rudder and centreboard that generates sufficient lift to clear the hull from the water. When this happens wetted surface area drops radically and the boats accelerate up to 1.2 to 1.5 times the speed of the prevailing wind. These boats are very light (all up weight is less than 40 kg) and very fast, They hydrofoil in as little as of breeze ("sit on the deck breeze" for most dinghy classes). The top recorded speed is about 50 km/hour, and speeds of 40 km/hour are common in the class. All types of propulsion * Dinghy ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Skier Rising Out Of Water
Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food, energy or organic micronutrients. Its chemical formula, H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. "Water" is also the name of the liquid state of H2O at standard temperature and pressure. A number of natural states of water exist. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor. Water covers a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kneeboarding (towsport)
Kneeboarding is an aquatic sport where the participant is towed on a buoyant, convex, and hydrodynamically shaped board at a planing speed, most often behind a motorboat. Kneeboarding on a surf style board with fin(s) is also done in waves at the beach. In the usual configuration of a tow-sport kneeboard, riders kneel on their heels on the board, and secure themselves to the deck with an adjustable Velcro strap over their thighs. Most water ski kneeboards do not have fins to allow for easier surface spins. As in wakeboarding or water skiing, the rider hangs onto a tow-rope. The advantages of kneeboarding versus other tow-sports seems to be an easier learning curve and a sense of being closer to the water when falls occur. History Kneeboards were first produced commercially in the 1970s. While they were not widely popular at first, kneeboarding had become widespread by the mid-1970s. Today, kneeboarding remains popular, with sales of about 100,000 units per year. As waterskiing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sit-down Hydrofoil
The sit-down hydrofoil, first developed in the late 1980s, is a variation on water skiing, a popular water sport. When towed at speed, by a powerful boat or some other device, the board of the hydrofoil 'flies' above the water surface and generally avoids contact with it, so the ride is largely unaffected by the wake or chop of the water and is relatively smooth. The air board is a modified hydrofoil where the skier stands up. History Hydrofoils date back the early 1900s, however they were not part of a recreational sport. While the first hydrofoil boat was created in 1906 by Italian inventor Enrico Forlanini, the first waterski hydrofoil was invented in the early 1960s by Walter Woodward, an aeronautical engineer, with two skis attached to a bi-wing hydrofoil. In 1972, Mike Murphy and Bob Woolley added a bi-wing hydrofoil to a surfing kneeboard, then reduced the bi-wing to a single wing. Murphy and Bob Woolley then applied the concept to sit-down hydrofoil, with Woolley riding the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yarra River
The Yarra River or historically, the Yarra Yarra River, (Kulin languages: ''Berrern'', ''Birr-arrung'', ''Bay-ray-rung'', ''Birarang'', ''Birrarung'', and ''Wongete'') is a perennial river in south-central Victoria, Australia. The lower stretches of the Yarra are where Victoria's state capital Melbourne was established in 1835, and today metropolitan Greater Melbourne dominates and influences the landscape of its lower reaches. From its source in the Yarra Ranges, it flows west through the Yarra Valley which opens out into plains as it winds its way through Greater Melbourne before emptying into Hobsons Bay in northernmost Port Phillip Bay. The river has been a major food source and meeting place for Indigenous Australians for thousands of years. Shortly after the arrival of European settlers, land clearing forced the remaining Wurundjeri people into neighbouring territories and away from the river. Originally called ''Birrarung'' by the Wurundjeri, the current name was mis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muscle Strength
Skeletal muscles (commonly referred to as muscles) are organs of the vertebrate muscular system and typically are attached by tendons to bones of a skeleton. The muscle cells of skeletal muscles are much longer than in the other types of muscle tissue, and are often known as muscle fibers. The muscle tissue of a skeletal muscle is striated – having a striped appearance due to the arrangement of the sarcomeres. Skeletal muscles are voluntary muscles under the control of the somatic nervous system. The other types of muscle are cardiac muscle which is also striated and smooth muscle which is non-striated; both of these types of muscle tissue are classified as involuntary, or, under the control of the autonomic nervous system. A skeletal muscle contains multiple fascicles – bundles of muscle fibers. Each individual fiber, and each muscle is surrounded by a type of connective tissue layer of fascia. Muscle fibers are formed from the fusion of developmental myoblasts in a proc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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