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Skipjack-class Submarine
The ''Skipjack'' class was a class of United States Navy nuclear submarines (SSNs) that entered service in 1959-61. This class was named after its lead boat, . The new class introduced the teardrop hull and the S5W reactor to U.S. nuclear submarines. The ''Skipjack''s were the fastest U.S. nuclear submarines until the s, the first of which entered service in 1974. Design The ''Skipjack''s' design (project SCB 154)Friedman, pp. 258 was based on the USS ''Albacore'''s high-speed hull design. The hull and innovative internal arrangement were similar to the diesel-powered ''Barbel'' class that were built concurrently. The design of the ''Skipjack''s was very different from the s that preceded the ''Skipjack''s. Unlike the ''Skate''s, this new design was maximized for underwater speed by fully streamlining the hull like a blimp. This required a single screw aft of the rudders and stern planes. Adoption of a single screw was a matter of considerable debate and analysis within th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Skipjack (SSN-585) Underway, Circa In 1965
USS ''Skipjack'' has been the name of more than one United States Navy ship named after the skipjack tuna, and may refer to: *USS ''Skipjack'' (Submarine No. 24), the original name of a submarine renamed while under construction in 1911 and in commission from 1912 to 1921 *, a submarine in commission from 1938 to 1946 *, a submarine in commission from 1959 to 1990 {{DEFAULTSORT:Skipjack United States Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark 14 Torpedo
The Mark 14 torpedo was the United States Navy's standard submarine-launched anti-ship torpedo of World War II. This weapon was plagued with many problems which crippled its performance early in the war. It was supplemented by the Mark 18 electric torpedo in the last two years of the war. From December 1941 to November 1943 the Mark 14 and the destroyer-launched Mark 15 torpedo had numerous technical problems that took almost two years to fix. After the fixes the Mark 14 played a major role in the devastating blow U.S. Navy submarines dealt to the Japanese naval and merchant marine forces during the Pacific War. By the end of World War II, the Mark 14 torpedo was a reliable weapon ultimately remaining in service for almost 40 years in the U.S. Navy, and even longer with other navies. Development The design of the Mark 14 started in January 1931; the Navy allocated $143,000 for its development. The Mark 14 was to serve in the new "fleet" submarines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skipjack Control Room
Skipjack may refer to: Zoology * Skipjack tuna, a fish of the family ''Scombridae'' * A common name for Elateridae (click beetles) * Skipjack shad, the fish species, ''Alosa chrysochloris'' * Common name for ''Pseudocaranx georgianus'', also known as silver trevally or skippy. Maritime * Skipjack 15, an American sailing dinghy design * HMS ''Skipjack'', Royal Navy, Halcyon class minesweeper, sunk by bombs in 1940 * Skipjack (boat), a type of fishing boat used on the Chesapeake Bay, USA * USS ''Skipjack'', the name of three United States Navy submarines * ''Skipjack'' class submarine, a class of United States Navy nuclear submarines In computing * Skipjack (cipher), a block cipher, designed by the US National Security Agency * Skipjack, the code name for Linspire 6.0, a Linux distribution * Skipjack, the code name for the VAX 8550 computer system, introduced by Digital Equipment Corporation in 1986 Other * Baltimore Skipjacks, former professional ice hockey team * Skipjack W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles-class Submarine
The ''Los Angeles'' class of submarines are Nuclear marine propulsion, nuclear-powered fast attack submarines (hull classification symbol, SSN) in service with the United States Navy. Also known as the 688 class (pronounced "six-eighty-eight") after the hull number of lead vessel , 62 were built from 1972 to 1996, the latter 23 to an improved 688i standard. As of 2022, 26 of the ''Los Angeles'' class remain Ship commissioning, in commission — more than any other class in the world — and they account for more than half of the U.S. Navy's 50 fast attack submarines. Of the 34 retired boats, a few were in commission for nearly 40 years, including , and . With a wide variance in longevity, 12 of the 688s were laid up halfway through their projected lifespans, being the youngest-retired at 15 years, 11 months. Another five also laid up early (20–25 years), due to their Refueling and overhaul, midlife reactor refueling being cancelled, and USS Miami (SSN-755)#2012 fire, one was l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yield Strength
In materials science and engineering, the yield point is the point on a stress-strain curve that indicates the limit of elastic behavior and the beginning of plastic behavior. Below the yield point, a material will deform elastically and will return to its original shape when the applied stress is removed. Once the yield point is passed, some fraction of the deformation will be permanent and non-reversible and is known as plastic deformation. The yield strength or yield stress is a material property and is the stress corresponding to the yield point at which the material begins to deform plastically. The yield strength is often used to determine the maximum allowable load in a mechanical component, since it represents the upper limit to forces that can be applied without producing permanent deformation. In some materials, such as aluminium, there is a gradual onset of non-linear behavior, making the precise yield point difficult to determine. In such a case, the offset yiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HY-80
HY-80 is a high-tensile, high yield strength, low alloy steel. It was developed for use in naval applications, specifically the development of pressure hulls for the US nuclear submarine program and is still currently used in many naval applications. It is valued for its strength to weight ratio. The "HY" steels are designed to possess a high yield strength (strength in resisting permanent plastic deformation). HY-80 is accompanied by HY-100 and HY-130 with each of the 80, 100 and 130 referring to their yield strength in ksi (80,000 psi, 100,000 psi and 130,000 psi). HY-80 and HY-100 are both weldable grades; whereas, the HY-130 is generally considered unweldable. Modern steel manufacturing methods that can precisely control time/temperature during processing of HY steels has made the cost to manufacture more economical. HY-80 is considered to have good corrosion resistance and has good formability to supplement being weldable. Using HY-80 steel requires careful consideration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbel-class Submarine
The ''Barbel''-class submarines, the last diesel-electric propelled attack submarines built by the United States Navy, incorporated numerous, radical engineering improvements over previous classes. They were the first production warships built with the teardrop-shape hull first tested on the experimental , and the first to combine the control room, attack center, and conning tower in the same space in the hull. They were of double hull design with 1.5-inch thick HY80 steel. This class of submarine became part of the United States Navy's fleet in 1959 and was taken out of service 1988–1990, leaving the Navy with an entirely nuclear-powered submarine fleet. The ''Barbel'' class' design is considered to be very effective.Polmar, Norman and Moore, K. J. (2004). ''Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines, 1945–2001''. Dulles: Potomac Books. , p. 215 The s of the Netherlands and the of the Republic of China (designed and built in the Netherla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Albacore (AGSS-569)
USS ''Albacore'' (AGSS-569) is a unique research submarine that pioneered the American version of the teardrop hull form (sometimes referred to as an "''Albacore'' hull") of modern submarines. The revolutionary design was derived from extensive hydrodynamic and wind tunnel testing, with an emphasis on underwater speed and maneuverability. She was the third vessel of the United States Navy to be named for the albacore. Her keel was laid down on 15 March 1952 by the Portsmouth Naval Shipyard of Kittery, Maine. She was launched on 1 August 1953, sponsored by Mrs. J. E. Jowers, the widow of Chief Motor Machinist's Mate Arthur L. Stanton, lost with the second ''Albacore'' (SS-218), and commissioned on 6 December 1953 with Lieutenant Commander Kenneth C. Gummerson in command. The effectiveness of submarines in World War II convinced both the Soviet Navy and the United States Navy that undersea warfare would play an even more important role in coming conflicts and dictated develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Characteristics Board
The Ship Characteristics Board was a unit of the United States Navy. The purpose of the Ship Characteristics Board was to coordinate the creation of 'ship characteristics' that are essential to the design of naval combatants and auxiliaries. Coordination was required because the operators and the designers of ships had different interests, perceptions, and concepts: as summarized by the naval historian Norman Friedman, "How to achieve the best possible compromise among competing bureaus has been one of the great dilemmas of 20th-century U.S. naval administration." This list of SCB projects is a useful exposition of the U.S. Navy's shipbuilding priorities in the first half of the Cold War. History The Ship Characteristics Board was founded in 1945 under the Office of the Chief of Naval Operations / OpNav. It was created after the body previously responsible for coordinating ships characteristics, the General Board, had been seen as ineffective in a series of earlier Navy bureau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teardrop Hull
A teardrop hull is a submarine hull design which emphasizes submerged performance over surfaced performance. It was somewhat commonly used in the early stages of submarine development, but was gradually abandoned in the early 20th century in favour of designs optimized for high performance on the surface as a result of changes in operational doctrine. Although naval doctrine changed, design practices remained until the later parts of World War II when the German Kriegsmarine suffered ever-growing losses of submarines in the Battle of the Atlantic. In an attempt to combat the growing threat of allied anti-submarine efforts, experimental design concepts dating back to the late interbellum were shoehorned into the existing submarine design process, resulting in a small number of hydrogen peroxide-powered submarines as well as the Elektroboot family of diesel-electric submarine classes. Although too late and too few to turn the war around, examination of these boats in the immedia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Submarine
A nuclear submarine is a submarine powered by a nuclear reactor, but not necessarily nuclear-armed. Nuclear submarines have considerable performance advantages over "conventional" (typically diesel-electric) submarines. Nuclear propulsion, being completely independent of air, frees the submarine from the need to surface frequently, as is necessary for conventional submarines. The large amount of power generated by a nuclear reactor allows nuclear submarines to operate at high speed for long periods, and the long interval between refuelings grants a range virtually unlimited, making the only limits on voyage times being imposed by such factors as the need to restock food or other consumables. The limited energy stored in electric batteries means that even the most advanced conventional submarine can only remain submerged for a few days at slow speed, and only a few hours at top speed, though recent advances in air-independent propulsion have somewhat ameliorated this disadv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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