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Waterskiing
Water skiing (also waterskiing or water-skiing) is a surface water sport in which an individual is pulled behind a boat or a 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, Europe, Africa, and 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 skiing, slaloming, jumping, barefoot skiing and wakeski. Similar, re ... [...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, Show Skiing, Cable Wakeboard, Cableski, 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 coaches * Provides resources for f ... [...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] |
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 fen ... [...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 hig ... [...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 na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Competitive
Competition is a rivalry where two or more parties strive for a common goal which cannot be shared: where one's gain is the other's loss (an example of which is a zero-sum game). Competition can arise between entities such as organisms, individuals, economic and social groups, etc. The rivalry can be over attainment of any exclusive goal, including recognition: Competition occurs in nature, between living organisms which co-exist in the same environment. Animals compete over water supplies, food, mates, and other biological resources. Humans usually compete for food and mates, though when these needs are met deep rivalries often arise over the pursuit of wealth, power, prestige, and fame when in a static, repetitive, or unchanging environment. Competition is a major tenet of market economies and business, often associated with business competition as companies are in competition with at least one other firm over the same group of customers. Competition inside a company i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-drive
V-drive is a propulsion system for boats that consists of two drive shafts, a gearbox, and a propeller. In a "V-drive" boat, the engine is mounted in the rear of the boat and the front of the engine faces aft. Connected to the rear of the engine is the transmission. The first drive shaft connects the rear of the transmission to a gearbox mounted in the center of the boat. The second drive shaft extends from the gearbox to the rear and out the bottom of the boat to where a propeller is mounted. Fred Cooper's 1935 design for Malcolm Campbell's '' Blue Bird'' used a v-drive designed by Reid Railton Reid A. Railton (1895–1977) was a British automotive engineer, and designer of land and water speed record vehicles. Biography Reid Antony Railton was the son of a Manchester stockbroker: Charles Withingon Railton and his wife Charlotte Eliza ... for its 2,000 bhp engine. References Marine propulsion {{Water-transport-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Datteln - KF2011 - Ostufer 06 Ies
Datteln is a town in the district of Recklinghausen, in North Rhine-Westphalia, Germany. It is situated on a crossroads of four canals (Datteln-Hamm Canal, Wesel-Datteln Canal, Dortmund-Ems Canal and Rhein-Herne Canal), which makes it the biggest canal junction in the World, approx. 10 km north-east of Recklinghausen and 20 km north-west of Dortmund. Katja Seizinger, retired ski racing champion and triple Olympic gold medalist, was born in Datteln. Notable people * Horst Niggemeier (1929–2000), politician, mayor of Datteln * Reinhard Lettmann (1933–2013), bishop of Münster (1980–2008) * Egon Ramms (born 1948), General, 2007–2010 commander at NATO * Klaus Eberhard (born 1957), director of Sport of German Tennis Federation and former tennis player * Ingo Anderbrügge (born 1964), football player and coach * Katja Seizinger (born 1972), World Cup alpine ski racing champion; three times the ''Sportswoman of the Year'' * Dunja Hayali (born 1974), journa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Measures
Safety is the state of being "safe", the condition of being protected from harm or other danger. Safety can also refer to the control of recognized hazards in order to achieve an acceptable level of risk. Meanings There are two slightly different meanings of ''safety''. For example, ''home safety'' may indicate a building's ability to protect against external harm events (such as weather, home invasion, etc.), or may indicate that its internal installations (such as appliances, stairs, etc.) are safe (not dangerous or harmful) for its inhabitants. Discussions of safety often include mention of related terms. Security is such a term. With time the definitions between these two have often become interchanged, equated, and frequently appear juxtaposed in the same sentence. Readers unfortunately are left to conclude whether they comprise a redundancy. This confuses the uniqueness that should be reserved for each by itself. When seen as unique, as we intend here, each term will a ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
