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Human-powered Watercraft
Human-powered watercraft are watercraft propelled only by human power, instead of being propelled by wind power (via one or more sails) or an engine. The three main methods of exerting human power are: # directly from the hands or feet, sometimes aided by swimfins; # through hand-operated oars, paddles, or poles, or; # through the feet with pedals, crankset or treadle. While most human-powered watercraft use buoyancy to maintain their position relative to the surface of the water, a few, such as human-powered hydrofoils and human-powered submarines, use hydrofoils, either alone or in addition to buoyancy. Oared craft Oars are held at one end, have a blade on the other end, and pivot in between in oarlocks. Oared craft include: * Racing shell Using oars in pairs, with one hand on each oar, is two-oar sculling. The oars may also be called sculls. Two-oared sculled craft include: * Adirondack guideboat * Banks dory, Gloucester dory, and McKenzie River dory * Din ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweep (rowing)
Sweep rowing is one of two disciplines of the sport of rowing. In sweep rowing each rower has one oar, usually held with both hands. As each rower has only one oar, the rowers have to be paired so that there are equal numbers of oars on each side of the boat. In the United Kingdom, rowing generally refers to sweep rowing only. The term pulling was also used historically.W B Woodgate ''Boating'' Read Books, 2008 In the other rowing discipline, sculling, each rower holds two oars, one in each hand. Sweep or single oar rowing has a long history and was the means of propulsion for Greek triremes and Viking longboats. These boats were wide enough for the pairs of rowers to sit alongside each other. Boats can go faster, the narrower they are, because a smaller cross-sectional area reduces drag and wave drag and gives a sharper angle to the bow. The hulls can be kept narrower by attaching riggers to the gunwales, so that the oarlocks can be placed farther out to carry longer oars. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or informally to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, or to medium-sized or smaller vessels (such as the midget submarine and the wet sub). Submarines are referred to as ''boats'' rather than ''ships'' regardless of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and submarines were adopted by several navies. They were first used widely during World War I (1914–1918), and are now used in many navy, navies, large and small. Their military uses include: attacking enemy surface ships (merchant and military) or other submarines; aircraft carrier protection; Blockade runner, blockade running; Ballistic missile submarine, nuclear deterrenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sampan
A sampan is a relatively flat-bottomed wooden boat found in East, Southeast, and South Asia. It is possibly of Chinese or Austronesian origin. Some sampans include a small shelter on board and may be used as a permanent habitation on inland waters. The design closely resembles Western hard chine boats like the scow or punt. Sampans are generally used for transportation in coastal areas or rivers and are often used as traditional fishing boats. It is unusual for a sampan to sail far from land, as they do not have the means to survive rough weather. It is sometimes claimed that the word "sampan" is derived from the Cantonese term ''sāam báan'' (), literally "three planks", but this is likely to be a false etymology. A possible Austronesian origin of the word has been suggested, as it is attested in an Old Malay inscription from 684 CE. Sampans may be propelled by poles, oars (particularly a single, long stern sculling oar called a ''yuloh'' (simplified Chinese 摇 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinghy
A dinghy is a type of small boat, often carried or Towing, towed by a Watercraft, larger vessel for use as a Ship's tender, tender. Utility dinghies are usually rowboats or have an outboard motor. Some are rigged for sailing but they differ from Dinghy sailing, 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 (maritime), 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 language, Bengali ', Urdu ', and Hindi '. Definition and basic description The term "dinghy" has some variability in its definition, but is generally a small open boat which may be powered by oars, sail or an outboard motor. Some individual examples have the option of being p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McKenzie River Dory
The McKenzie River dory, or drift boat, is an adaptation of the open-water Dory (boat), dory converted for use in rivers. A variant of the boat's hull is called a modified McKenzie dory or Rogue River dory. The McKenzie designs are characterized by a wide, flat bottom, flared sides, a narrow, flat bow (ship), bow, and a pointed stern. The sole identifying characteristic of the McKenzie River dory is a continuous rocker (the arc from bow to stern along the bottom of the boat). It is this constant rocker that allows the boat to spin about its center for ease in maneuvering in rapids. History McKenzie River dories are specialized to run rapids on rivers, and first appeared on the McKenzie River (Oregon), McKenzie River in Oregon in the mid-20th century. A prolific McKenzie River dory boat builder in the 1940s and 1950s was Wood "Woodie" Knoble Hindman. Woodie had learned to build these steep rocker boats from master boat builder Torkel "Tom" Kaarhus. The McKenzie River dory Woodie ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
