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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] |
Gloucester Dory
The Gloucester dory is a variant of the Banks dory, a type of narrow-bottomed, slab-sided boat, common in the North Eastern United States. It is characteristically smaller and lighter, with less overhang, both bow and stern, and less freeboard. It retains the Banks dory's slab sides. Gloucester dories were designed to be launched through the surf behind a breakwater for daily fishing and lobstering off the Massachusetts shore. Because of its simple lines, a Gloucester dory is relatively easy to build. With the straight sides and flat bottom, stitch and glue techniques work well with this boat. See also * Dory Dory most commonly refers to: * Dory (boat), a small, shallow-draft boat * Dory, the common name of several fish; see List of fishes known as dory * Dory (''Finding Nemo''), a fictional character Dory may also refer to: Arts and entertainmen ... * Swampscott dory References Books; * * {{fisheries and fishing Boat types Gloucester, Massachusetts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banks Dory
The Banks dory, or Grand Banks dory, is a type of dory. They were used as traditional fishing boats from the 1850s on the Grand Banks of Newfoundland. The Banks dory is a small, open, narrow, flat-bottomed and slab-sided boat with a particularly narrow transom. They were inexpensive to build and could be stacked or nested inside each other and stored on the decks of larger fishing vessels which functioned as mother ships. Banks dories have long overhangs at the bow and stern which helps them lift over waves. There were one-man and two-man versions. Most could be fitted with sails. The dories became more stable when they were loaded with about half a ton of catch. Production The Banks dory type is very simple and efficient to produce, making them well suited to mass production. By 1880, Bank dories were being built in large numbers in the Massachusetts towns of Gloucester, Beverly, Essex, Newburyport, and Salisbury (Amesbury). Other major areas of production included Seabr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adirondack Guideboat
The Adirondack Guideboat is a rowboat that was developed in the 1840s for recreational activities in Adirondack Park. It was designed to have a shallow draft, carry three people and their gear, and be light enough to be portaged by one man, the guide. Typical dimensions are 16 feet long, with a 38 inch beam, and weighing 60 pounds. While superficially resembling a canoe in size and profile, its construction methods are very different and are one of its defining features. The stem and ribs are made from spruce, a wood which has a very good strength to weight ratio. The hull is planked up with cedar laps, with seams tacked with copper tacks. The hull has a bottom board, like a dory, typically made of pine. Ribs are traditionally cut from spruce roots which have a grain following the desired curvature of the rib. Since 1962 the annual Willard Hanmer Guideboat Race has been held on the closest Sunday to the 4th of July in Saranac Lake. It is a 10-mile canoe and kayak race on Lake F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-oar Sculling
Sculling is the use of oars to propel a boat by moving them through the water on both sides of the craft, or moving one oar over the stern. A long, narrow boat with sliding seats, rigged with two oars per rower may be referred to as a scull, its oars may be referred to as sculls and a person rowing it referred to as sculler. Sculling is distinguished from sweep rowing, whereby each boat crew member employs an oar, complemented by another crew member on the opposite side with an oar, usually with each pulling it with two hands and from stern sculling, which uses an oar to propel a vessel with side-to-side movements from the stern. Overview Sculling is a form of rowing in which a boat is propelled by one or more rowers, each of whom operates two oars, one held in the fingers and upper palm of each hand. This contrasts with the other common method of rowing, sweep rowing, in which each rower may use both hands to operate a single oar on either the port or starboard side of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundesarchiv Bild 183-1982-0819-033, Nationalmannschaft, DDR, Doppelvierer
The German Federal Archives or Bundesarchiv (BArch) (, lit. "Federal Archive") are the national archives of Germany. They were established at the current location in Koblenz in 1952. They are subordinated to the Federal Commissioner for Culture and the Media (Claudia Roth since 2021) under the German Chancellery, and before 1998, to the Federal Ministry of the Interior. On 6 December 2008, the Archives donated 100,000 photos to the public, by making them accessible via Wikimedia Commons. History The federal archive for institutions and authorities in Germany, the first precursor to the present-day Federal Archives, was established in Potsdam, Brandenburg in 1919, a later date than in other European countries. This national archive documented German government dating from the founding of the North German Confederation in 1867. It also included material from the older German Confederation and the Imperial Chamber Court. The oldest documents in this collection dated back to the y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racing Shell
In watercraft, a racing shell (also referred to as a ''fine boat'' (UK) or simply a ''shell'') is an extremely narrow, and often comparatively long, rowing boat specifically designed for Rowing (sport), racing or exercise. It is equipped with long oars, outriggers to hold the oarlocks away from the boat, and sliding seats. The boat's long length and semicircular cross-section reduce drag to a minimum. This makes the boat both fast and unstable. It must be balanced by the rowers to avoid tipping. Being able to balance – or "set" – the boat while putting maximum effort into the oars is therefore an essential skill of sport rowing. History The racing shell evolved from the simple working rowboat. Boats with longer hull (watercraft), hulls and narrower in Beam (nautical), beam were developed in the early 19th century specifically for team racing. These dedicated boats were the first boats that could be called racing shells, and they evolved into the highly specialized forms used t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
