|
Los Angeles-class
The ''Los Angeles'' class of submarines are nuclear-powered fast attack submarines ( 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 2024, 24 of the ''Los Angeles'' class remain in commission—more than any other class in the world—and they account for almost half of the U.S. Navy's 50 fast attack submarines. Submarines of this class are named after American towns and cities, such as Albany, New York; Los Angeles, California; and Tucson, Arizona, with the exception of , named for the " father of the nuclear Navy." This was a change from traditionally naming attack submarines after marine animals, such as or . Rickover explained the decision to name the submarines after cities (and occasionally politicians influential in defense issues) by observing that "fish don't vote." Development In the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newport News Shipbuilding
Newport News Shipbuilding (NNS), a division of Huntington Ingalls Industries, is the sole designer, builder, and refueler of aircraft carriers and one of two providers of submarines for the United States Navy. Founded as the Chesapeake Dry Dock and Construction Co. in 1886, Newport News Shipbuilding has built more than 800 ships, including both naval and commercial ships. Located in the city of Newport News, Virginia, its facilities span more than . The shipyard is a major employer, not only for the lower Virginia Peninsula, but also portions of Hampton Roads south of the James River and the harbor, portions of the Middle Peninsula region, and even some northeastern counties of North Carolina. The shipyard is building two s: , and . In 2013, Newport News Shipbuilding began the deactivation of the first nuclear-powered aircraft carrier, , which it also built. Newport News Shipbuilding also performs refueling and complex overhaul (RCOH) work on s. This is a four-year vessel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fast Attack Submarine
An attack submarine or hunter-killer submarine is a submarine specifically designed for the purpose of attacking and sinking other submarines, surface combatants, and merchant vessels. In the Soviet and Russian navies they were and are called "multi-purpose submarines". They are also used to protect friendly surface combatants and missile submarines. Some attack subs are also armed with cruise missiles, increasing the scope of their potential missions to include land targets. Attack submarines may be either nuclear-powered or diesel–electric ("conventionally") powered. In the United States Navy naming system, and in the equivalent NATO system (STANAG 1166), nuclear-powered attack submarines are known as SSNs and their anti-submarine (ASW) diesel–electric predecessors are SSKs. In the US Navy, SSNs are unofficially called "fast attacks". History Origins During World War II, submarines that fulfilled the offensive surface attack role were termed fleet submarines in the U. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diving Plane
Diving planes, also known as hydroplanes, are control surfaces found on a submarine which allow the vessel to Pitch (flight), pitch its bow and stern up or down to assist in the process of submerging or surfacing the boat, as well as controlling depth when submerged. Bow and stern planes Diving planes are usually fitted in two pairs, the ''bow (ship), bow planes'' at the front of the submarine and the ''stern planes'' at the rear. The stern planes function in much the same way as an aircraft's elevator (aircraft), elevator. As the planes are a long distance fore-and-aft from the hull's centre of buoyancy, they introduce a pitching moment. Ballast tanks within the submarine adjust buoyancy to be neutral, making the boat controllable. The position of the planes controls the pitch (aviation), pitch of the boat and, with the forward motion of the boat, this controls depth. If not carefully controlled, this could lead to a Phugoid, 'porpoising' motion whereby the planesman continua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Law 85-804
In government contracting, a Contract Adjustment Board is a department board at the Secretariat level in the U.S. Government that deals with disputes and requests for extraordinary relief under Public Law 85-804 of Aug. 28, 1958. In brief: Public Law No. 85-804, codified at 50 U.S.C. § 1431-35 (Supp. IV 1998), grants to the President the authority to authorize any agency which exercises functions in connection with the national defense to enter into contracts or into amendments or modifications of contracts, and to make advance payments, without regard to other applicable legal provisions whenever such action would facilitate the national defense. 50 U.S.C. § 1431. The legislative history of the statute indicates that it may also be used as the basis for making indemnity payments under certain government contracts, the so-called "residual powers. " ECR Current Materials at 1005, 1021. The legislative history explains that " e need for indemnity clauses in most cases arises from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruise-missile Submarine
A cruise missile submarine is a submarine that carries and launches cruise missiles ( SLCMs consisting of land-attack cruise missiles and anti-ship missiles) as its primary armament. Missiles greatly enhance a warship's ability to attack surface combatants and strike land targets; although torpedoes are a more discreet option for submerged submarines, missiles give a much longer stand-off range, shorter time to impact the target, as well as the ability to engage multiple targets on different headings at the same time. Many cruise missile submarines retain the capability to deploy nuclear warheads on their missiles, but they are considered distinct from ballistic missile submarines due to the substantial differences between the two weapons systems' flight characteristics; cruise missiles fly aerodynamically using flight surfaces like wings or fins, while a ballistic missile uses its engine power alone as it may exit the atmosphere. The United States Navy's hull classification s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Ship Naming Conventions
United States ship naming conventions for the U.S. Navy were established by congressional action at least as early as 1862. Title 13, section 1531, of the U.S. Code, enacted in that year, reads, in part, Further clarification was made by executive order of President Theodore Roosevelt in 1907. However, elements had existed since before his time. If a ship is reclassified, for example a destroyer is converted to a mine layer, it retains its original name. Traditional conventions * Aircraft carriers (AV, CV, CVL and CVA), the Navy's first carrier, , was converted from a collier, while carriers and were started as battlecruisers but were also converted to carriers due to the Washington Naval Treaty. was the first purpose-made carrier. Like battlecruisers, the names of battles or famous U.S. Navy ships became the standard for aircraft carriers, with the exception of: ** , , and , which were all references to aviation. ** , named for John Hancock, a Founding Father, , named f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyman G
Hyman is the surname of: * Alan Hyman (1910–1999), author and screenwriter * Albert Hyman (1893–1972), co-inventor of the artificial pacemaker * Anthony Hyman (other), several people * Ben Zion Hyman (1891–1984), Canadian-Jewish bookseller * Bill Hyman (1875–1959), English cricketer * C. S. Hyman (1854–1926), Canadian businessman, politician, and sportsman * Dick Hyman (born 1927), American jazz pianist/keyboardist and composer * Dorothy Hyman (born 1941), British athlete * Eric Hyman (born 1950), collegiate athletic director * Flo Hyman, Flora ("Flo") Jean Hyman (1954–1986), American volleyball player and Olympic silver medalist * Herbert Hyman (1918–1985), American sociologist * Ishmael Hyman (born 1995), American football player * James Hyman (born 1970), British DJ and music supervisor * James (Mac) Hyman (born 1950), Applied mathematician * Jeffrey Hyman (1951–2001), birth name of punk rock singer-songwriter Joey Ramone * Jennifer Hyman, CEO and co-fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tucson, Arizona
Tucson (; ; ) is a city in Pima County, Arizona, United States, and its county seat. It is the second-most populous city in Arizona, behind Phoenix, Arizona, Phoenix, with a population of 542,630 in the 2020 United States census. The Tucson metropolitan statistical area had 1.043 million residents in 2020 and forms part of the Tucson-Nogales combined statistical area. Tucson and Phoenix anchor the Arizona Sun Corridor. The city is southeast of Phoenix and north of the United States–Mexico border It is home to the University of Arizona. Major incorporated suburbs of Tucson include Oro Valley, Arizona, Oro Valley and Marana, Arizona, Marana northwest of the city, Sahuarita, Arizona, Sahuarita south of the city, and South Tucson, Arizona, South Tucson in an enclave south of downtown. Communities in the vicinity of Tucson (some within or overlapping the city limits) include Casas Adobes, Arizona, Casas Adobes, Catalina Foothills, Arizona, Catalina Foothills, Flowing Wells, A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles
Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, cultural center of Southern California. With an estimated 3,878,704 residents within the city limits , it is the List of United States cities by population, second-most populous in the United States, behind only New York City. Los Angeles has an Ethnic groups in Los Angeles, ethnically and culturally diverse population, and is the principal city of a Metropolitan statistical areas, metropolitan area of 12.9 million people (2024). Greater Los Angeles, a combined statistical area that includes the Los Angeles and Riverside–San Bernardino metropolitan areas, is a sprawling metropolis of over 18.5 million residents. The majority of the city proper lies in Los Angeles Basin, a basin in Southern California adjacent to the Pacific Ocean in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
