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USS Perch (SS-176)
USS ''Perch'' (SS-176) - a ''Porpoise''-class submarine, was the first ship of the United States Navy to be named for the perch. Construction and commissioning ''Perch''′s keel was laid down on 25 February 1935 by the Electric Boat Company, in Groton, Connecticut. She was launched on 9 May 1936, sponsored by Mrs. Helen Lorena Withers (''née'' LaBar), wife of Captain (later Admiral) Thomas Withers, Jr., then assigned to Naval Submarine Base New London at Groton, She was commissioned on 19 November 1936. Service history Inter-war period After shakedown in the North Atlantic Ocean, ''Perch'' became a unit of the United States Pacific Fleet when she joined Submarine Squadron 6 (SubRon 6) in November 1937. The following spring she was engaged in the annual fleet problem and did some work on a survey of the Aleutian Islands, entering the Bering Sea on 28 February. In the spring of 1939, ''Perch'' operated with the fleet on its cruise to the United States East Coast. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Perch (SS-176)
USS ''Perch'' (SS-176) - a ''Porpoise''-class submarine, was the first ship of the United States Navy to be named for the perch. Construction and commissioning ''Perch''′s keel was laid down on 25 February 1935 by the Electric Boat Company, in Groton, Connecticut. She was launched on 9 May 1936, sponsored by Mrs. Helen Lorena Withers (''née'' LaBar), wife of Captain (later Admiral) Thomas Withers, Jr., then assigned to Naval Submarine Base New London at Groton, She was commissioned on 19 November 1936. Service history Inter-war period After shakedown in the North Atlantic Ocean, ''Perch'' became a unit of the United States Pacific Fleet when she joined Submarine Squadron 6 (SubRon 6) in November 1937. The following spring she was engaged in the annual fleet problem and did some work on a survey of the Aleutian Islands, entering the Bering Sea on 28 February. In the spring of 1939, ''Perch'' operated with the fleet on its cruise to the United States East Coast. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gould Storage Battery Company
Gould may refer to: People * Gould (name), a surname Places United States * Gould, Arkansas, a city * Gould, Colorado, an unincorporated community * Gould, Ohio, an unincorporated community * Gould, Oklahoma, a town * Gould, West Virginia, an unincorporated community * Gould City, Michigan * Gould City, Washington * Gould Township, Minnesota Multiple countries * Gould Lake (other) * Mount Gould (other) Elsewhere * Gould (crater), a lunar crater formation * Gould Coast, Antarctica * Gould Dome, Alberta, Canada Other uses * Gould baronets, two titles, one in the Baronetage of England and one in the Baronetage of Great Britain * Gould Belt, a partial ring of stars in the Milky Way * Gould designation, a type of star identifier * Gould League, an independent Australian organisation promoting environmental education * Gould Electronics, a company involved in the electronics and semiconductor industries * Gould Racing, a British motorsport company * USC Gou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keel
The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in British and American shipbuilding traditions the construction is dated from this event. Etymology The word "keel" comes from Old English , Old Norse , = "ship" or "keel". It has the distinction of being regarded by some scholars as the first word in the English language recorded in writing, having been recorded by Gildas in his 6th century Latin work ''De Excidio et Conquestu Britanniae'', under the spelling ''cyulae'' (he was referring to the three ships that the Saxons first arrived in). is the Latin word for "keel" and is the origin of the term careen (to clean a keel and the hull in general, often by rolling the ship on its side). An example of this use is Careening Cove, a suburb of Sydney, Australia, where careening was carried out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perch
Perch is a common name for fish of the genus ''Perca'', freshwater gamefish belonging to the family Percidae. The perch, of which three species occur in different geographical areas, lend their name to a large order of vertebrates: the Perciformes, from the el, πέρκη (), simply meaning perch, and the Latin ''forma'' meaning shape. Many species of freshwater gamefish more or less resemble perch, but belong to different genera. In fact, the exclusively saltwater-dwelling red drum is often referred to as a red perch, though by definition perch are freshwater fish. Though many fish are referred to as perch as a common name, to be considered a true perch, the fish must be of the family Percidae. The type species for this genus is the European perch, ''P. fluviatilis''. Species Most authorities recognize three species within the perch genus: * The European perch (''P. fluviatilis'') is primarily found in Europe, but a few can also be found in South Africa, and even as far ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage of its active battle fleet alone exceeding the next 13 navies combined, including 11 allies or partner nations of the United States as of 2015. It has the highest combined battle fleet tonnage (4,635,628 tonnes as of 2019) and the world's largest aircraft carrier fleet, with eleven in service, two new carriers under construction, and five other carriers planned. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the United States Navy is the third largest of the United States military service branches in terms of personnel. It has 290 deployable combat vessels and more than 2,623 operational aircraft . The United States Navy traces its origins to the Continental Navy, which was established during the American Revo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliber
In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms) , bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimetres, millimeters. In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a "45 caliber" firearm has a barrel diameter of roughly . Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise specifications in non-metric units, and vice versa. In a rifling , rifled barrel, the distance is measured between opposing Rifling#C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4"/50 Caliber Gun
The 4″/50 caliber gun (spoken "four-inch-fifty-caliber") was the standard low-angle, quick-firing gun for United States, first appearing on the monitor and then used on "Flush Deck" destroyers through World War I and the 1920s. It was also the standard deck gun on S-class submarines, and was used to rearm numerous submarines built with guns early in World War II. United States naval gun terminology indicates the gun fired a projectile in diameter, and the barrel was 50 calibers long. Design The original 4-inch/50 caliber Mark 7 gun, M1898, serial nos. 213–254, 257–281, 316–338, was an entirely new high-power design built-up gun with a tube, jacket, hoop, locking ring and screw breech. Gun No. 213 had a liner. The gun was described as a gun but with a 4-inch bore in the 1902 handbook, this indicated its higher power and also the fact the barrel was actually more the size of a 5-inch/40 caliber gun than a 4-inch gun. The ammunition was about heavier than a 4-inch/40 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a ''fish''. The term ''torpedo'' originally applied to a variety of devices, most of which would today be called naval mine, mines. From about 1900, ''torpedo'' has been used strictly to designate a self-propelled underwater explosive device. While the 19th-century battleship had evolved primarily with a view to engagements between armored warships with naval artillery, large-caliber guns, the invention and refinement of torpedoes from the 1860s onwards allowed small torpedo boats and other lighter surface combatant , surface vessels, submarines/submersibles, even improvised fishing boats or frogmen, and later light aircraft, to destroy large shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpedo Tube
A torpedo tube is a cylindrical device for launching torpedoes. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboard surface vessels. Deck-mounted torpedo launchers are usually designed for a specific type of torpedo, while submarine torpedo tubes are general-purpose launchers, and are often also capable of deploying naval mine, mines and cruise missiles. Most modern launchers are standardized on a diameter for light torpedoes (deck mounted aboard ship) or a diameter for heavy torpedoes (underwater tubes), although other sizes of torpedo tube have been used: see Torpedo#Classes and diameters, Torpedo classes and diameters. Submarine torpedo tube A submarine torpedo tube is a more complex mechanism than a torpedo tube on a surface ship, because the tube has to accomplish the function of moving the torpedo from the normal atmospheric pressure within t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American 21 Inch Torpedo
There have been a number of 21-inch torpedoes in service with the United States. These have been used on ships and submarines of the U.S. Navy. American 21-inch torpedoes are in diameter. Ship classes that carried 21-inch torpedoes include: * ''Allen M. Sumner''-class destroyers * ''Atlanta''-class cruisers * ''Bagley''-class destroyers * ''Balao''-class submarines * ''Barbel''-class submarines * ''Barracuda''-class submarines * ''Benham''-class destroyers * ''Benjamin Franklin''-class submarines * ''Benson''-class destroyers * ''Cachalot''-class submarines * ''Caldwell''-class destroyers * ''Cassin''-class destroyers * ''Chester''-class cruisers * ''Clemson''-class destroyers * ''Colorado''-class battleships * ''Connecticut''-class battleships * ''Dealey''-class destroyer escorts * ''Ethan Allen''-class submarines * ''Farragut''-class destroyers * ''Forrest Sherman''-class destroyers * ''Fletcher''-class destroyers * ''Gato''-class submarines * ''Gearing''-class destroyers * ''Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-stroke Engine
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Motors
The General Motors Company (GM) is an American Multinational corporation, multinational Automotive industry, automotive manufacturing company headquartered in Detroit, Michigan, United States. It is the largest automaker in the United States and was the largest in the world for 77 years before losing the top spot to Toyota in 2008. General Motors operates manufacturing plants in eight countries. Its four core automobile brands are Chevrolet, Buick, GMC (automobile), GMC, and Cadillac. It also holds interests in Chinese brands Wuling Motors and Baojun as well as DMAX (engines), DMAX via joint ventures. Additionally, GM also owns the BrightDrop delivery vehicle manufacturer, GM Defense, a namesake Defense vehicles division which produces military vehicles for the United States government and military; the vehicle safety, security, and information services provider OnStar; the auto parts company ACDelco, a GM Financial, namesake financial lending service; and majority ownership in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
