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Extreme Clipper
An extreme clipper was a clipper designed to sacrifice cargo capacity for speed. They had a bow lengthened above the water, a drawing out and sharpening of the forward body, and the greatest breadth further aft. In the United States, extreme clippers were built in the period 1845 to 1855. British-built extreme clippers include vessels built over the period 1854 to 1870 (''Annandale'' to e.g. '' Norman Court''). The first extreme clipper Arthur H. Clark, in his 1910 book ''The Clipper Ship Era'', explains the history leading up to the construction of the first extreme clipper: Medium and extreme clippers From 1851 or earlier another type of clipper ship was also being built, the medium clipper. In the mid-1800s, shipbuilders in Medford, Massachusetts began building what would become the medium clipper ship. They "quietly evolved a new type (of ship) of about 450 tons burden which, handled by eighteen officers and men, would carry half as much freight as a British-Indianma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clipper
A clipper was a type of mid-19th-century merchant sailing vessel, designed for speed. Clippers were generally narrow for their length, small by later 19th century standards, could carry limited bulk freight, and had a large total sail area. "Clipper" does not refer to a specific sailplan; clippers may be schooners, brigs, brigantines, etc., as well as full-rigged ships. Clippers were mostly constructed in British and American shipyards, although France, Brazil, the Netherlands and other nations also produced some. Clippers sailed all over the world, primarily on the trade routes between the United Kingdom and China, in transatlantic trade, and on the New York-to-San Francisco route around Cape Horn during the California Gold Rush. Dutch clippers were built beginning in the 1850s for the tea trade and passenger service to Java. The boom years of the clipper era began in 1843 in response to a growing demand for faster delivery of tea from China. This continued under the stimul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antelope Of Boston
''Antelope'' was a medium clipper built in 1851 in Medford, near Boston, Massachusetts. She sailed in the San Francisco, China, and Far East trades, and was known for her fine finish work and for her crew's escape from pirates. She is often called ''Antelope of Boston'' to distinguish her from an extreme clipper launched in 1852, ''Antelope of New York''. Construction ''Antelope'' was designed "to combine large stowage capacity with good sailing qualities." Her frame was white oak, with yellow pine planking and a rock maple keel. The hull was black, the inside dark buff with blue waterways. Her cabin was "beautifully panelled with satin and zebra woods, set off with rose wood pilasters." The "Boston Daily Atlas" praised ''Antelope''’s ornamental work as "infinitely superior to most of the gaudy stuff now in vogue." Voyages ''Antelope'' sailed from Boston to San Francisco on her maiden voyage in 149 days, rather than the expected 130 days or less, under the well known Cap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Architecture
Naval architecture, or naval engineering, is an engineering discipline incorporating elements of mechanical, electrical, electronic, software and safety engineering as applied to the engineering design process, shipbuilding, maintenance, and operation of marine vessels and structures. Naval architecture involves basic and applied research, design, development, design evaluation (classification) and calculations during all stages of the life of a marine vehicle. Preliminary design of the vessel, its detailed design, construction, trials, operation and maintenance, launching and dry-docking are the main activities involved. Ship design calculations are also required for ships being modified (by means of conversion, rebuilding, modernization, or repair). Naval architecture also involves formulation of safety regulations and damage-control rules and the approval and certification of ship designs to meet statutory and non-statutory requirements. Main subjects The word "vessel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Clipper Ships
The period of clipper ships lasted from the early 1840s to the early 1890s, and over time features such as the hull evolved from wooden to composite. At the 'crest of the clipper wave' year of 1852, there were 200 clippers rounding Cape Horn. The age of clippers ended when they were phased out in favor of more modern Iron-hulled sailing ships, which eventually gave way to steamships. In the late 20th century, ships based on the 19th century designs of historical ships began to be built. These are used today as training ships and to promote tourism rather than for cargo or trade. The following entries are organized by their year of launch and alphabetically within each year. List criteria Among other characteristics which define a clipper is that they were usually ships in the strictest sense of the word. That is, they were three-masted vessels (though rarely four-masted) and were fully square-rigged on all masts. Speedy contemporary vessels with other sail plans, such as ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clipper Route
The clipper route was the traditional route derived from the Brouwer Route and sailed by clipper ships between Europe and the Far East, Australia and New Zealand. The route ran from west to east through the Southern Ocean, to make use of the strong westerly winds of the Roaring Forties. Many ships and sailors were lost in the heavy conditions along the route, particularly at Cape Horn, which the clippers had to round on their return to Europe. The clipper route fell into commercial disuse with the introduction of marine steam engines, and the opening of the Suez and Panama Canals. It remains the fastest sailing route around the world, and as such has been the route for several prominent yacht races, such as the Velux 5 Oceans Race and the Vendée Globe. Australia and New Zealand The clipper route from England to Australia and New Zealand, returning via Cape Horn, offered captains the fastest circumnavigation of the world, and hence potentially the greatest rewards; many gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald McKay
Donald McKay (September 4, 1810 – September 20, 1880) was a Canadian-born American designer and builder of sailing ships, famed for his record-setting clippers. Early life He was born in Jordan Falls, Shelburne County, on Nova Scotia's South Shore. He was the oldest son and one of eighteen children of Hugh McKay, a fisherman and a farmer, and Ann McPherson McKay. Both of his parents were of Scottish descent. He was named after his grandfather, Captain Donald McKay, a British officer, who after the Revolutionary war moved to Nova Scotia from the Scottish Highlands. Early years as a shipbuilder In 1826 McKay moved to New York, working for shipbuilders Brown & Bell and was an apprentice of Isaac Webb from 1827 to 1831. After 1832 he did some freelance jobs for Webb and Smith & Dimon. McKay also freelanced for Brown & Bell at their Wescasset's shipyard. In 1840 at Newburyport, he was contracted to finish ''Delia Walker'', 427 tons, for John Currier, Jr. Currier was ver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Floor
One half ( : halves) is the irreducible fraction resulting from dividing one by two or the fraction resulting from dividing any number by its double. Multiplication by one half is equivalent to division by two, or "halving"; conversely, division by one half is equivalent to multiplication by two, or "doubling". One half often appears in mathematical equations, recipes, measurements, etc. Half can also be said to be one part of something divided into two equal parts. For instance, the area ''S'' of a triangle is computed. :''S'' = × perpendicular height. One half also figures in the formula for calculating figurate numbers, such as triangular numbers and pentagonal numbers: : \frac and in the formula for computing magic constants for magic squares : M_2(n) = \frac \left(n^ + 1\right) The Riemann hypothesis states that every nontrivial complex root of the Riemann zeta function has a real part equal to . One half has two different decimal expansions, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Nautical Terms (A-L)
This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin ''nauticus'', from Greek ''nautikos'', from ''nautēs'': "sailor", from ''naus'': "ship". Further information on nautical terminology may also be found at Nautical metaphors in English, and additional military terms are listed in the Multiservice tactical brevity code article. Terms used in other fields associated with bodies of water can be found at Glossary of fishery terms, Glossary of underwater diving terminology This is a glossary of technical terms, jargon, diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts. Underwater diving can be describ ..., Glossary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoyancy
Buoyancy (), or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column. Similarly, the pressure at the bottom of an object submerged in a fluid is greater than at the top of the object. The pressure difference results in a net upward force on the object. The magnitude of the force is proportional to the pressure difference, and (as explained by Archimedes' principle) is equivalent to the weight of the fluid that would otherwise occupy the submerged volume of the object, i.e. the displaced fluid. For this reason, an object whose average density is greater than that of the fluid in which it is submerged tends to sink. If the object is less dense than the liquid, the force can keep the object afloat. This can occur only in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Stability
Ship stability is an area of naval architecture and ship design that deals with how a ship behaves at sea, both in still water and in waves, whether intact or damaged. Stability calculations focus on centers of gravity, centers of buoyancy, the metacenters of vessels, and on how these interact. History Ship stability, as it pertains to naval architecture, has been taken into account for hundreds of years. Historically, ship stability calculations relied on rule of thumb calculations, often tied to a specific system of measurement. Some of these very old equations continue to be used in naval architecture books today. However, the advent of calculus-based methods of determining stability, particularly Pierre Bouguer's introduction of the concept of the metacenter in the 1740s ship model basin, allow much more complex analysis. Master shipbuilders of the past used a system of adaptive and variant design. Ships were often copied from one generation to the next with only minor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Indiaman
East Indiaman was a general name for any sailing ship operating under charter or licence to any of the East India trading companies of the major European trading powers of the 17th through the 19th centuries. The term is used to refer to vessels belonging to the Austrian, Danish, Dutch, English, French, Portuguese, or Swedish companies. Some of the East Indiamen chartered by the British East India Company were known as "tea clippers". In Britain, the East India Company held a monopoly granted to it by Queen Elizabeth I of England in 1600 for all English trade between the Cape of Good Hope and Cape Horn. This grant was progressively restricted during the late 18th and early 19th centuries, until the monopoly was lost in 1834. English (later British) East Indiamen usually ran between England, the Cape of Good Hope and India, where their primary destinations were the ports of Bombay, Madras and Calcutta. The Indiamen often continued on to China before returning to England v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow (ship)
The bow () is the forward part of the hull of a ship or boat, the point that is usually most forward when the vessel is underway. The aft end of the boat is the stern. Prow may be used as a synonym for bow or it may mean the forward-most part of the bow above the waterline. Function A ship's bow should be designed to enable the hull to pass efficiently through the water. Bow shapes vary according to the speed of the boat, the seas or waterways being navigated, and the vessel's function. Where sea conditions are likely to promote pitching, it is useful if the bow provides reserve buoyancy; a flared bow (a raked stem with flared topsides) is ideal to reduce the amount of water shipped over the bow. Ideally, the bow should reduce the resistance and should be tall enough to prevent water from regularly washing over the top of it. Large commercial barges on inland waterways rarely meet big waves and may have remarkably little freeboard at the bow, whereas fast military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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