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Oared Vessels
An oar is an implement used for water-borne Marine propulsion, propulsion. Oars have a flat blade at one end. Rowers grasp the oar at the other end. The difference between oars and paddles is that oars are used exclusively for rowing. In rowing the oar is connected to the vessel by means of a Lever, pivot point for the oar, either an rowlock, oarlock, or a thole. The oar is placed in the pivot point with a short portion inside the vessel, and a much larger portion outside. The rower pulls on the short end of the oar, while the long end is in the water. By contrast, paddles, are held in both hands by the paddler, and are not attached to the vessel. Rowers generally face the stern of the vessel, reach towards the stern, and insert the blade of their oar in the water. As they lean back, towards the vessel's Bow (ship), bow, the blade of their oars pivots in the oarlock, and the end in the water moves towards the stern, providing forward thrust. For thousands of years vessels were p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ishikawa Prefecture
is a prefecture of Japan located in the Chūbu region of Honshu island. Ishikawa Prefecture has a population of 1,140,573 (31 October 2019) and has a geographic area of 4,186 km2 (1,616 sq mi). Ishikawa Prefecture borders Toyama Prefecture to the east, Gifu Prefecture to the southeast, and Fukui Prefecture to the south. Kanazawa is the capital and largest city of Ishikawa Prefecture, with other major cities including Hakusan, Komatsu, and Kaga. Ishikawa is located on the Sea of Japan coast and features the most of the Noto Peninsula which forms Toyama Bay, one of the largest bays in Japan. Ishikawa Prefecture is part of the historic Hokuriku region and formerly an important populated center that contained some of the wealthiest ''han'' (domains) of the Japanese feudal era. Ishikawa Prefecture is home to Kanazawa Castle, Kenroku-en one of the Three Great Gardens of Japan, Nyotaimori ("body sushi"), and Kutani ware. History Ishikawa was formed in 1872 from the merger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or woodchips or fiber. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the productio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Competitive Rowing
Rowing, sometimes called crew in the United States, is the sport of racing boats using oars. It differs from paddling sports in that rowing oars are attached to the boat using oarlocks, while paddles are not connected to the boat. Rowing is divided into two disciplines: sculling and sweep rowing. In sculling, each rower holds two oars—one in each hand, while in sweep rowing each rower holds one oar with both hands. There are several boat classes in which athletes may compete, ranging from single sculls, occupied by one person, to shells with eight rowers and a coxswain, called eights. There are a wide variety of course types and formats of racing, but most elite and championship level racing is conducted on calm water courses long with several lanes marked using buoys. Modern rowing as a competitive sport can be traced to the early 17th century when professional watermen held races ( regattas) on the River Thames in London, England. Often prizes were offered by the London ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Croker Sculling Oars
Croker Oars is an Australian manufacturer of rowing oars that was started by Howard Croker OAM in Sydney, Australia. They are now manufactured on Oxley Island, Taree, on the banks of the lower Manning River, in New South Wales. During the 1950s, Croker and his two brothers were students at Newington College and their father was a rowing coach at the school. Howard Croker went on to be a successful rower in the 1960s, winning both State and National rowing titles. Croker rowed for the then Haberfield Rowing Club at Dobroyd Point and was a coach in the years 1975 and 1976 at The Scots College. Croker Oars currently produce sculling and sweep oars for the Australian and international market. Croker also manufactures surf boat oars. Many elite rowers use Croker oars and together with Concept2 Concept2, Inc. is an American manufacturer of rowing equipment and exercise machines that is based in Morrisville, Vermont. It is best known for its air resistance indoor rowing mach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dozen
A dozen (commonly abbreviated doz or dz) is a grouping of twelve. The dozen may be one of the earliest primitive integer groupings, perhaps because there are approximately a dozen cycles of the Moon, or months, in a cycle of the Sun, or year. Twelve is convenient because it has a maximal number of divisors among the numbers up to its double, a property only true of 1, 2, 6, 12, 60, 360, and 2520. The use of twelve as a base number, known as the duodecimal system (also as ''dozenal''), originated in Mesopotamia (see also sexagesimal). Counting in base-12 can easily be accomplished on one's hands by counting each finger bone with one's thumb. Using this method, one hand can count to twelve, and two hands (with the second hand as a placeholder for representing units of twelve) can count to 144. Twelve dozen (122 = 144) are known as a gross; and twelve gross (123 = 1,728, the duodecimal 1,000) are called a great gross, a term most often used when shipping or buying items in bul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warship
A warship or combatant ship is a naval ship that is built and primarily intended for naval warfare. Usually they belong to the armed forces of a state. As well as being armed, warships are designed to withstand damage and are usually faster and more maneuverable than merchant ships. Unlike a merchant ship, which carries cargo, a warship typically carries only weapons, ammunition and supplies for its crew. Warships usually belong to a navy, though they have also been operated by individuals, cooperatives and corporations. In wartime, the distinction between warships and merchant ships is often blurred. In war, merchant ships are often armed and used as auxiliary warships, such as the Q-ships of the First World War and the armed merchant cruisers of the Second World War. Until the 17th century it was common for merchant ships to be pressed into naval service and not unusual for more than half a fleet to be composed of merchant ships. Until the threat of piracy subsided in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinghy
A dinghy is a type of small boat, often carried or towed by a larger vessel for use as a tender. Utility dinghies are usually rowboats or have an outboard motor. Some are rigged for sailing but they differ from sailing dinghies, which are designed first and foremost for sailing. A dinghy's main use is for transfers from larger boats, especially when the larger boat cannot dock at a suitably-sized port or marina. The term "dinghy towing" sometimes is used to refer to the practice of towing a car or other smaller vehicle behind a motorhome, by analogy to towing a dinghy behind a yacht. Etymology The term is a loanword from the Bengali ', Urdu ', and Hindi '. Types Dinghies usually range in length from about . Larger auxiliary vessels are generally called tenders, pinnaces or lifeboats. Folding and take-down multi-piece (nesting) dinghies are used where space is limited. Some newer dinghies have much greater buoyancy, giving them more carrying capacity than older ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Advantage
Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the ''law of the lever.'' Machine components designed to manage forces and movement in this way are called mechanisms. An ideal mechanism transmits power without adding to or subtracting from it. This means the ideal machine does not include a power source, is frictionless, and is constructed from rigid bodies that do not deflect or wear. The performance of a real system relative to this ideal is expressed in terms of efficiency factors that take into account departures from the ideal. Lever The lever is a movable bar that pivots on a fulcrum attached to or positioned on or across a fixed point. The lever operates by applying forces at different distances from the fulcrum, or pivot. The location of the fulcrum determines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Rowing Federation
World Rowing, also known as the World Rowing Federation (former abbreviation FISA; french: Fédération internationale des sociétés d'aviron), is the international governing body for rowing. Its current president is Jean-Christophe Rolland who succeeded Denis Oswald at a ceremony held in Lucerne in July 2014. The World Rowing Cup, World Rowing Championships, and other such competitions are overseen by this organization. History General It was founded by rowing representatives from France, Switzerland, Belgium, Adriatica, and Italy on 25 June 1892 in Turin in response to the growing popularity of the sport of rowing, and the consequent need for uniformity of regulations over such matters as race lengths, boat composition, and weight classes. Also, at the time, betting on rowing was very popular, and the rowers or coaches were themselves often taking bets. Amateur status, whilst widespread in England and elsewhere, was unknown in the sport in many nations, a state of affairs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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