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HMS Archer (D78)
HMS ''Archer'' was a built by the United States in 1939–1940 and operated by the Royal Navy during World War II. She was built as the cargo ship ''Mormacland'', but was converted to an escort carrier and renamed HMS ''Archer''. Her transmission was a constant cause of problems which led to her being withdrawn from front-line service. She was used as a stores ship and then as an accommodation ship before a refit and subsequent use as a merchant aircraft ferry ship, ''Empire Lagan''. She was returned to the US Navy, then laid up as ''Archer'' before being sold into merchant service and converted to a passenger ship, ''Anna Salén''. She was used to take emigrants to Australia and Canada in the early 1950s. She was sold and renamed ''Tasmania'' and after further service as an emigrant ship was converted back to a cargo ship. She was later sold and renamed ''Union Reliance''. She was scrapped after a collision and fire in 1961. Description and construction ''Mormacland'' was la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Maritime Commission
The United States Maritime Commission was an independent executive agency of the U.S. federal government that was created by the Merchant Marine Act of 1936, which was passed by Congress on June 29, 1936, and was abolished on May 24, 1950. The commission replaced the United States Shipping Board which had existed since World War I. It was intended to formulate a merchant shipbuilding program to design and build five hundred modern merchant cargo ships to replace the World War I vintage vessels that comprised the bulk of the United States Merchant Marine, and to administer a subsidy system authorized by the Act to offset the cost differential between building in the U.S. and operating ships under the American flag. It also formed the United States Maritime Service for the training of seagoing ship's officers to man the new fleet. As a symbol of the rebirth of the U.S. Merchant Marine and Merchant Shipbuilding under the Merchant Marine Act, the first vessel contracted for was . O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oerlikon 20 Mm Cannon
The Oerlikon 20 mm cannon is a series of autocannons based on an original German Becker Type M2 20 mm cannon design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models employed by both Allied and Axis forces during World War II. Many versions of the cannon are still used. Blowback-operated models History Origins During World War I, the German industrialist Reinhold Becker developed a 20 mm caliber cannon, known now as the 20 mm Becker using the advanced primer ignition blowback (API blowback) method of operation. This used a 20×70mmRB cartridge and had a cyclic rate of fire of 300 rpm. It was used on a limited scale as an aircraft gun on ''Luftstreitkräfte'' warplanes, and an anti-aircraft gun towards the end of that war. Because the Treaty of Versailles banned further production of such weapons in Germany, the patents and design works were transferred in 1919 to the Swiss firm SEMAG (''Seebach M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Pelias
USS ''Pelias'' (AS–14) was a in service with the United States Navy from 1941 to 1970. History ''Pelias'' was laid down as SS ''Mormacyork'' under Maritime Commission contract by Sun Shipbuilding and Dry Dock Co., Chester, Pennsylvania, 8 May 1939; launched 14 November 1939; sponsored by Miss Barbara W. Vickery; and delivered to Moore-McCormick Steamship Co., 1 April 1940. ''Mormacyork'' served for a short time on passenger service between ports in the United States and South America. Acquired by the Navy late in 1940, she was renamed ''Pelias'' 9 January 1941 and converted for Navy use as a submarine tender by Bethlehem Steel Co., Brooklyn, N.Y. ''Pelias'' commissioned at New York 5 September 1941. World War II Following shakedown off New England, ''Pelias'' sailed for the Pacific 9 October 1941. Steaming via San Diego, California, she arrived Pearl Harbor 21 November 1941 as the tender for Submarine Squadron Six. Six days later she began sub overhauls at the Submarine Bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Griffin (AS-13)
USS ''Griffin'' (AS-13), originally ''Mormacpenn'', a United States Maritime Commission Type C3 pre-war cargo ship, was launched by Sun Shipbuilding & Dry Dock, Chester, Pennsylvania, 11 October 1939. She served briefly with Moore-McConnack, Inc., was acquired by the Navy in 1940, renamed ''Griffin'' (AS-13) and converted to a submarine tender at Robbins Dry Dock and Repair Company, Brooklyn, N.Y. ''Griffin'' commissioned 31 July 1941. Her conversion completed in September 1941, ''Griffin'' conducted shakedown off the East Coast and sailed with a sub squadron to Newfoundland 22 November 1941. Recalled to Newport, Rhode Island, after Pearl Harbor, the ship was assigned to the United States Pacific Fleet, and departed 14 February 1942 for Australia. ''Griffin'' arrived Brisbane 15 April 1942 to tend Submarine Squadron 5. Early in the war, the United States developed a major submarine base in Australia; and submarines tended by ''Griffin'' struck hard at Japanese shipping whil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missouri
Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it borders Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas to the south and Oklahoma, Kansas, and Nebraska to the west. In the south are the Ozarks, a forested highland, providing timber, minerals, and recreation. At 1.5 billion years old, the St. Francois Mountains are among the oldest in the world. The Missouri River, after which the state is named, flows through the center and into the Mississippi River, which makes up the eastern border. With over six million residents, it is the List of U.S. states and territories by population, 19th-most populous state of the country. The largest urban areas are St. Louis, Kansas City, Missouri, Kansas City, Springfield, Missouri, Springfield, and Columbia, Missouri, Columbia. The Cap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falk Corporation
Falk may refer to: * Falk (name), including origin and list of people with this name * Falk Archaeological District, historic town and lumber mill site * Falk Township, Minnesota * "Falk" (short story), a 1901 short story by Joseph Conrad * Postal abbreviation of Falkirk, an area of Scotland See also *Falx (other) Falx may refer to: *Falciform ligament, a ligament of the liver *Falx, a sickle, scythe or sickle-like weapon used by Dacians *Falx cerebelli and falx cerebri, two parts of the dura mater of the brain *Foramen ovale (heart), a fetal cardiac shunt, a ... * Faulk (other) * Falck (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Coupling
A magnetic coupling is a component which transfers torque from one shaft to another using a magnetic field, rather than a physical mechanical connection. They are also known as magnetic drive couplings, magnetic shaft couplings, or magnetic disc couplings. Magnetic couplings allow a physical separation between input and output shafts, precluding the use of shaft seals, which eventually wear out and fail from the sliding of two surfaces against each another. Magnetic couplings are also used for ease of maintenance on systems that require precise alignment, since they allow a greater off-axis error between the motor and driven shaft than physical couplings. Magnetic couplings are most often used for liquid pumps, propeller systems, mine motors, conveyor belt motors and kiln elevators. Applications Some diver propulsion vehicles and remotely operated underwater vehicles use magnetic couplings to transfer torque from the electric motor to the prop. Magnetic gearing is also being ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller
A propeller (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 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 stern sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engines
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Introduction Diesel engines work by compressing only air, or air combined with residual combustion gases from the exhaust (known as exhaust gas recirculation, "EGR"). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases air temperature inside the cylinder so that atomised diesel fuel injected into the combustion chamber ignites. The torque a diesel engine produces is controlled by manipulating the air-fue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sun Shipbuilding And Drydock Company
Sun Shipbuilding & Drydock Company (1917–1982) was a major shipbuilding company in Chester, Pennsylvania on the Delaware River. Its primary product was tankers, but the company built many types of ships over its 70-year history. During World War II, it participated in the U.S. Government's Emergency Shipbuilding Program. The company was also part of the U.S. aerospace industry during the Cold War; it built various propulsion research & development structures, including the largest U.S. rocket test chamber, for Aerojet General in 1963. History The company was developed by Sun Oil Company, and launched its first ship in 1917, just as the United States was entering World War I. Under the direction of its president, John Glenn Pew, the company experienced tremendous success over the following decades. In the 1920s, it had become a large shipyard that built tankers for the Standard Oil Company. In 1936, the Pew family offered John J. McClure and his Republican political machin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passenger Ship
A passenger ship is a merchant ship whose primary function is to carry passengers on the sea. The category does not include cargo vessels which have accommodations for limited numbers of passengers, such as the ubiquitous twelve-passenger freighters once common on the seas in which the transport of passengers is secondary to the carriage of freight. The type does however include many classes of ships designed to transport substantial numbers of passengers as well as freight. Indeed, until recently virtually all ocean liners were able to transport mail, package freight and express, and other cargo in addition to passenger luggage, and were equipped with cargo holds and derricks, kingposts, or other cargo-handling gear for that purpose. Only in more recent ocean liners and in virtually all cruise ships has this cargo capacity been eliminated. While typically passenger ships are part of the merchant marine, passenger ships have also been used as troopships and often are commissi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merchant Aircraft Carrier
A merchant aircraft carrier (also known as a MAC ship, the Admiralty (United Kingdom), Admiralty's official 'short name') was a limited-purpose aircraft carrier operated under British and Dutch civilian registry during World War II. MAC ships were adapted by adding a flight deck to a bulk grain ship or oil tanker enabling it to operate anti-submarine aircraft in support of Allies of World War II, Allied convoys during the Battle of the Atlantic. Despite their quasi-military function, MAC ships retained their mercantile status, continued to carry cargo and operated under civilian command. MAC ships entered service from May 1943 when they began to supplement and supplant escort carriers, and remained operational until the end of the war in Europe. Development In 1940, Captain M. S. Slattery RN, Director of Air Matériel at the Admiralty (United Kingdom), Admiralty, proposed a scheme for converting merchant ships into aircraft carriers as a follow-up to the CAM ship project. Sl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
