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Dismasting
Dismasting, also called demasting, occurs to a sailing ship when one or more of the masts responsible for hoisting the sails that propel the vessel breaks. Dismasting usually occurs as the result of high winds during a storm acting upon masts, sails, rigging, and spars. Over-compression of the mast due to the rigger being over-tightened, as well as g-forces caused by wave action and the boat swinging back and forth, can also result in a dismasting. Dismasting does not necessarily impair the vessel's ability to stay afloat, but rather its ability to move under sail power. Frequently, the hull of the vessel remains intact, upright and seaworthy. Modern masts are usually made of aluminum, carbon fibre, or other high-strength materials. These masts are subject to huge forces and tensions during high wind, large seas, or racing situations, and it is not uncommon even today for modern masts to be lost. Factors contributing to dismastings Dismastings occur for many reasons. They t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Dodd (1748-1815) - Action At Sea, A French Frigate Completely Dismasted - BHC2243 - Royal Museums Greenwich (1908–1988), American football coach
{{DEFAULTSORT:Dodd, Robert ...
Robert or Bobby Dodd may refer to: * Robert Dodd (baseball) (born 1973), American baseball player * Robert Dodd (artist) (1748–1815), British marine painter * Robert Dodd (footballer), English association footballer * Robert F. Dodd (1844–1903), Canadian soldier who fought in the American Civil War * Bobby Dodd Robert Lee Dodd (November 11, 1908 – June 21, 1988) was an American college football player and coach, college baseball coach, and college athletics administrator. He served as the head football coach at Georgia Tech from 1945 to 1966, compili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catamarans
A catamaran () (informally, a "cat") is a watercraft with two parallel hull (watercraft), hulls of equal size. The wide distance between a catamaran's hulls imparts stability through resistance to rolling and overturning; no ballast is required. Catamarans typically have less hull volume, smaller Displacement (ship), displacement, and shallower draft (hull), draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic drag (physics), resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on the water can reduce both Heeling (sailing)#Heeling, heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes. Catamarans were invented by the Austronesian peoples, and enabled their expansion to the islands of the Indian Ocean, Indian and Pacific Oceans. Catamarans range in size from small sailing or rowing vessels to large naval s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moby Dick
''Moby-Dick; or, The Whale'' is an 1851 Epic (genre), epic novel by American writer Herman Melville. The book is centered on the sailor Ishmael (Moby-Dick), Ishmael's narrative of the maniacal quest of Captain Ahab, Ahab, captain of the whaler, whaling ship ''Pequod (Moby-Dick), Pequod'', for vengeance against Moby Dick (whale), Moby Dick, the giant white sperm whale that bit off his leg on the ship's previous voyage. A contribution to the literature of the American Renaissance (literature), American Renaissance, ''Moby-Dick'' was published to mixed reviews, was a commercial failure, and was out of print at the time of the author's death in 1891. Its reputation as a Great American Novel was established only in the 20th century, after the 1919 centennial of its author's birth. William Faulkner said he wished he had written the book himself, and D. H. Lawrence called it "one of the strangest and most wonderful books in the world" and "the greatest book of the sea ever written". It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Man-of-war
In Royal Navy jargon, a man-of-war (also man-o'-war, or simply man) was a powerful warship or frigate of the 16th to the 19th century, that was frequently used in Europe. Although the term never acquired a specific meaning, it was usually reserved for a sailing ship armed with cannon. The rating system of the Royal Navy classified men-of-war into six "rates", a "first-rate" having the greatest armament, and a "sixth-rate" the least. Description The man-of-war was developed in Portugal in the early 15th century from earlier roundships with the addition of a second mast to form the carrack. The 16th century saw the carrack evolve into the galleon and then the ship of the line A ship of the line was a type of naval warship constructed during the Age of Sail from the 17th century to the mid-19th century. The ship of the line was designed for the naval tactics in the Age of Sail, naval tactic known as the line of battl .... The evolution of the term has been given thus: Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jury Rigging
In maritime transport and sailing, jury rigging or jury-rigging is making temporary makeshift running repairs with only the tools and materials on board. It originates from sail-powered boats and ships. Jury-rigging can be applied to any part of a ship; be it its super-structure ( hull, decks), propulsion systems ( mast, sails, rigging, engine, transmission, propeller), or controls ( helm, rudder, centreboard, daggerboards, rigging). Similarly, a jury mast is a replacement mast after a dismasting. If necessary, a yard would also be fashioned and stayed to allow a watercraft to resume making way. Rigging A sail-powered boat may carry a limited amount of repair materials, from which some form of jury-rig can be fashioned. Additionally, anything salvageable, such as a spar or spinnaker pole, could be adapted to carry a makeshift sail. Ships typically carried a selection of spare parts such as topmasts. However, due to their much larger size, at up to in diameter, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Combustion Engine
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced by combustion applies direct force to some component of the engine. The force is typically applied to pistons (reciprocating engine, piston engine), turbine blades (gas turbine), a Wankel engine, rotor (Wankel engine), or a propulsive nozzle, nozzle (jet engine). This force moves the component over a distance. This process transforms chemical energy into kinetic energy which is used to propel, move or power whatever the engine is attached to. The first commercially successful internal combustion engines were invented in the mid-19th century. The first modern internal combustion engine, the Otto engine, was designed in 1876 by the German engineer Nicolaus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yachting World
''Yachting World'' is a monthly English language magazine published since 1894. Owned by Future plc, it features articles on sailing and yachting Yachting is recreational boating activities using medium/large-sized boats or small ships collectively called yachts. Yachting is distinguished from other forms of boating mainly by the priority focus on comfort and luxury, the dependence on ma ..., specialising in ocean and offshore cruising and racing events and techniques. It is published in the UK, but has an international readership, with some 65% of readers outside the UK. The editor is Helen Fretter. References External links Official website Future plc Monthly magazines published in the United Kingdom Sports magazines published in the United Kingdom English-language magazines Magazines established in 1894 Sailing magazines {{sport-mag-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolt Cutters
A bolt cutter, sometimes called bolt cropper, is a tool used for cutting bolts, chains, padlocks, rebar and wire mesh. It typically has long handles and short blades, with compound hinges to maximize leverage and cutting force. A typical bolt cutter yields of cutting force for a force on the handles. There are different types of cutting blades for bolt cutters, including angle cut, center cut, shear cut, and clipper cut blades. Bolt cutters are usually available in 12, 14, 18, 24, 30, 36 and 42 inches (30.5, 35.6, 46, 61, 76, 91.4 and 107 cm) in length. The length is measured from the tip of the jaw to the end of the handle. *Angle cut has the cutter head angled for easier insertion. Typical angling is 25 to 35 degrees. *Center cut has the blades equidistant from the two faces of the blade. *Shear cut has the blades inverted to each other (such as normal paper scissor blades). *Clipper cut has the blades flush against one face (for cutting against flat surfaces). Bolt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sailing World
Sailing employs the wind—acting on sails, wingsails or kites—to propel a craft on the surface of the ''water'' (sailing ship, sailboat, raft, windsurfer, or kitesurfer), on ''ice'' (iceboat) or on ''land'' (land yacht) over a chosen course, which is often part of a larger plan of navigation. From prehistory until the second half of the 19th century, sailing craft were the primary means of maritime trade and transportation; exploration across the seas and oceans was reliant on sail for anything other than the shortest distances. Naval power in this period used sail to varying degrees depending on the current technology, culminating in the gun-armed sailing warships of the Age of Sail. Sail was slowly replaced by steam as the method of propulsion for ships over the latter part of the 19th century – seeing a gradual improvement in the technology of steam through a number of developmental steps. Steam allowed scheduled services that ran at higher average speeds than sailing ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honolulu Advertiser
''The Honolulu Advertiser'' was a daily newspaper published in Honolulu, Hawaii. At the time publication ceased on June 6, 2010, it was the largest daily newspaper in Hawaii. It published daily with special Sunday and Internet editions. ''The Honolulu Advertiser'' was the parent publisher of ''Island Weekly'', ''Navy News'', ''Army Weekly'', ''Ka Nupepa People'', ''West Oahu People'', ''Leeward People'', ''East Oahu People'', ''Windward People'', ''Metro Honolulu People'', and ''Honolulu People'' small, community-based newspapers for the public. ''The Honolulu Advertiser'' has had a succession of owners since it began publishing in 1856 under the name the ''Pacific Commercial Advertiser''. On February 25, 2010, Black Press, which owned the '' Honolulu Star-Bulletin'', purchased ''The Honolulu Advertiser'' from Gannett Pacific Corporation, which acquired the ''Advertiser'' in 1992 after it had sold the ''Star-Bulletin'' to another publisher that later sold it to Black Press i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jibe
A jibe (US) or gybe (Britain) is a sailing maneuver whereby a sailing craft reaching downwind turns its stern through the wind, which then exerts its force from the opposite side of the vessel. It stands in contrast with tacking, whereby the sailing craft turns its bow through the wind. In this maneuver, the mainsail will cross the center of the boat while the jib is pulled to the other side of the boat. If a spinnaker is up, its pole will have to be manually moved to the other side, to remain opposite the mainsail. In a dinghy, raising the centerboard can increase the risk of capsizing during what can be a somewhat violent maneuver, although the opposite is true of a dinghy with a flat, planing hull profile: raising the centerboard reduces heeling moment during the maneuver and so reduces the risk of capsize. The other way to change the side of the boat that faces the wind is turning the bow of the boat into, and then through, the direction of the wind. This opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G-force
The g-force or gravitational force equivalent is a Specific force, mass-specific force (force per unit mass), expressed in Unit of measurement, units of standard gravity (symbol ''g'' or ''g''0, not to be confused with "g", the symbol for grams). It is used for sustained accelerations that cause a perception of weight. For example, an object at rest on Earth's surface is subject to 1 ''g'', equaling the conventional value of gravitational acceleration on Earth, about . More transient acceleration, accompanied with significant jerk (physics), jerk, is called Shock (mechanics), ''shock''. When the g-force is produced by the surface of one object being pushed by the surface of another object, the reaction force to this push produces an equal and opposite force for every unit of each object's mass. The types of forces involved are transmitted through objects by interior Stress (mechanics), mechanical stresses. Gravitational acceleration is one cause of an object's accelera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
