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Screw Sloop
A screw sloop is a propeller-driven sloop-of-war. In the 19th century, during the introduction of the steam engine, ships driven by propellers were differentiated from those driven by paddle-wheels by referring to the ship's ''screws'' (propellers). Other propeller-driven warships included screw frigates and screw corvette A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the slo ...s. See also * CSS ''Alabama'' * USS ''Alaska'' * USS ''Contoocook'' * HMS ''Gannet'', now a museum ship. * USS ''Housatonic'', sunk by the first successful submarine attack. * USS ''Wyoming'' * * Ship types {{navy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Alaska
Four ships of the United States Navy have been named USS ''Alaska'' in honor of the territory acquired by the United States from Russia in 1867 which later became the state of Alaska: * , a wooden-hulled screw sloop-of-war in commission from 1869 to 1883 that saw numerous small actions * , a steam trawler chartered to serve as a minesweeper during World War I, in commission from 1918 to 1919 * , the lead ship of the of large cruisers, in commission from 1944 to 1947; she saw action in the last days of World War II * , an ''Ohio''-class ballistic missile submarine commissioned in 1986 and currently in service See also * * References * {{DEFAULTSORT:Alaska United States Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller
A propeller (colloquially often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are specially shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft (ship), propeller shaft with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sloop-of-war
In the 18th century and most of the 19th, a sloop-of-war in the Royal Navy was a warship with a single gun deck that carried up to eighteen guns. The rating system covered all vessels with 20 guns and above; thus, the term ''sloop-of-war'' encompassed all the unrated combat vessels, including the very small gun-brigs and cutters. In technical terms, even the more specialised bomb vessels and fireships were classed as sloops-of-war, and in practice these were employed in the sloop role when not carrying out their specialised functions. In World War I and World War II, the Royal Navy reused the term "sloop" for specialised convoy-defence vessels, including the of World War I and the highly successful of World War II, with anti-aircraft and anti-submarine capability. They performed similar duties to the American destroyer escort class ships, and also performed similar duties to the smaller corvettes of the Royal Navy. Rigging A sloop-of-war was quite different from a civilian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Engine
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed, by a connecting rod and crank, into rotational force for work. The term "steam engine" is generally applied only to reciprocating engines as just described, not to the steam turbine. Steam engines are external combustion engines, where the working fluid is separated from the combustion products. The ideal thermodynamic cycle used to analyze this process is called the Rankine cycle. In general usage, the term ''steam engine'' can refer to either complete steam plants (including boilers etc.), such as railway steam locomotives and portable engines, or may refer to the piston or turbine machinery alone, as in the beam engine and stationary steam engine. Although steam-driven devices were known as early as the aeolipile in the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship
A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished from boats, based on size, shape, load capacity, and purpose. Ships have supported exploration, trade, warfare, migration, colonization, and science. After the 15th century, new crops that had come from and to the Americas via the European seafarers significantly contributed to world population growth. Ship transport is responsible for the largest portion of world commerce. The word ''ship'' has meant, depending on the era and the context, either just a large vessel or specifically a ship-rigged sailing ship with three or more masts, each of which is square-rigged. As of 2016, there were more than 49,000 merchant ships, totaling almost 1.8 billion dead weight tons. Of these 28% were oil tankers, 43% were bulk carriers, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paddle Wheel
A paddle wheel is a form of waterwheel or impeller in which a number of paddles are set around the periphery of the wheel. It has several uses, of which some are: * Very low-lift water pumping, such as flooding paddy fields at no more than about height above the water source. * To move and mix algae culture in the raceway ponds used for algaculture. * Propulsion of watercraft (as a paddlewheel) * Low head hydro power (as a waterwheel) * Flow sensors * Aerators The paddle wheel is an ancient invention but is still used today in a wide range of industrial and agriculture applications. Ship propulsion Paddle wheels would enable ships to travel without needing wind or oars. They were made obsolete by propellers, which had greater propulsion with lower weight and fuel usage. This was demonstrated by an 1845 tug-of-war competition between and with the screw-driven ''Rattler'' pulling the paddle steamer ''Alecto'' backward at . [...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] |
Screw Frigate
Steam frigates (including screw frigates) and the smaller steam corvettes, steam sloops, steam gunboats and steam schooners, were steam-powered warships that were not meant to stand in the line of battle. There were some exceptions like for example the France, French Napoléon-class ship of the line, Napoléon class steam ship of the line was meant to stand in the line of battle, making it the world's first steam battleship. The first such ships were paddle steamers. Later on the invention of Propeller#Screw propeller, screw propulsion enabled construction of steam-powered versions of the traditional ship of the line, ships of the line, frigates, corvettes, Sloop-of-war, sloops and gunboats. Evolution First steam warships The first small vessel that can be considered a steam warship was the ''Demologos'', which was launched in 1815 for the United States Navy. From the early 1820s, the British Navy began building a number of small Steamship, steam warships including the armed tu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corvette
A corvette is a small warship. It is traditionally the smallest class of vessel considered to be a proper (or " rated") warship. The warship class above the corvette is that of the frigate, while the class below was historically that of the sloop-of-war. The modern roles that a corvette fulfills include coastal patrol craft, missile boat and fast attack craft. These corvettes are typically between 500 tons and 2,000 .although recent designs may approach 3,000 tons, having size and capabilities that overlap with smaller frigates. However unlike contemporary frigates, a modern corvette does not have sufficient endurance and seaworthiness for long voyages. The word "corvette" is first found in Middle French, a diminutive of the Dutch word ''corf'', meaning a "basket", from the Latin ''corbis''. The rank "corvette captain", equivalent in many navies to "lieutenant commander", derives from the name of this type of ship. The rank is the most junior of three "captain" ranks in sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CSS Alabama
CSS ''Alabama'' was a screw sloop-of-war built in 1862 for the Confederate States Navy at Birkenhead on the River Mersey opposite Liverpool, England by John Laird Sons and Company. ''Alabama'' served as a successful commerce raider, attacking Union merchant and naval ships over the course of her two-year career, during which she never docked at a Southern port. She was sunk in June 1864 by at the Battle of Cherbourg outside the port of Cherbourg, France. History Construction ''Alabama'' was built in secrecy in 1862 by British shipbuilders John Laird Sons and Company, in north west England at their shipyards at Birkenhead, Wirral, opposite Liverpool. The construction was arranged by the Confederate agent Commander James Bulloch, who led the procurement of sorely needed ships for the fledgling Confederate States Navy. The contract was arranged through the Fraser Trenholm Company, a cotton broker in Liverpool with ties to the Confederacy. Under prevailing British neutrality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Alaska (1868)
The first USS ''Alaska'' was a wooden-hulled screw sloop of war, built at the Boston Navy Yard and named for the then-newly acquired territory. The ship was launched on 31 October 1868 and sponsored by Miss Grace Hull, the daughter of Mayor Liverus Hull of Charlestown, Boston. ''Alaska'' was commissioned on 8 December 1869, with Commander Homer C. Blake in command. Service history Asiatic Squadron, 1870–1872 On 9 April 1870, ''Alaska'' got underway from New York in company with Rear Admiral John Rodger's flagship, the screw frigate ''Colorado''. However, the two warships soon parted company; and ''Alaska'' steamed independently to the Far East where she visited many of the more important ports to show the flag until May 1871. At that time, ''Alaska'' joined four other ships of the Asiatic Squadron in a visit to Korea in order to secure a treaty to open the " Hermit Kingdom" to the west. The five ships departed Nagasaki, Japan, on 16 May 1871 and arrived at Roze Roads near ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Contoocook (1864)
USS ''Contoocook'' was a screw sloop-of-war built for the United States Navy during the American Civil War. She is named after a river and village in New Hampshire. She was launched at Portsmouth Navy Yard and commissioned , commanded by Captain George Balch. Her first cruise, as flagship of the North Atlantic Squadron, took her to the West Indies, where she patrolled extensively for the protection of American interests during 1868 and 1869. Her name was changed to ''Albany'' on . After another cruise to the West Indies in the fall of that year, ''Albany'' was placed out of commission on . She served as a quarantine ship at New York until sold . ''Cootoocook''-class sloop * USS ''Contoocook'' (1864) * * * Cancelled ships include: * * * * The ''Dictionary of American Naval Fighting Ships The ''Dictionary of American Naval Fighting Ships'' (''DANFS'') is the official reference work for the basic facts about ships used by the United States Navy. When the writing pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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