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Song Class
The Type 039 submarine (NATO reporting name: Song-class) is a class of diesel-electric submarines of the People's Liberation Army Navy. The class is the first diesel-electric submarine to be fully developed within China and also the first Chinese diesel-electric submarine to use the teardrop hull shape. Design The submarine uses a modern teardrop-shape hull for underwater performance. The hull incorporates four rudders and is propelled by a single propeller. The engine is imported from Germany. For quieter operation, the engine was mounted with shock absorbers and the hull is plated in rubber tiles for sound deadening. Development was not without problems, as a lengthy testing period for the first vessel (''320'') attests. Problems with noise levels and underwater performance led to revisions in the design and only a single boat was ever built to the original specification. Improvements led to the specification for the ''Type 039G'', which became the bulk of production, with se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jiangnan Shipyard
Jiangnan Shipyard () is a historic shipyard in Shanghai, China. The shipyard has been state-owned since its founding in 1865 and is now operated as Jiangnan Shipyard (Group) Co. Ltd. Before 2009, the company was south of central Shanghai at 2 Gaoxing Road (). In 2009, the shipyard was moved to Changxing Island, in the mouth of the Yangtze River to the north of urban Shanghai. (). The shipyard builds, repairs and converts both civilian and military ships. Other activities include the manufacture of machinery and electrical equipment, pressure vessels and steel works for various land-based products. Ship building The shipyard main production is: liquefied gas carriers, car carriers, crude oil tankers, Panamax bulk carriers, Handymax bulk carriers, Lake suitable bulk carriers, multi-purpose cargo ships, and fast feeder container ships. The shipyard recently delivered 23,000 TEU LNG-fueled containership the ''CMA CGM Champs Elysées'', but there was a delay of at least 10 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruise Missile
A cruise missile is a guided missile used against terrestrial or naval targets that remains in the atmosphere and flies the major portion of its flight path at approximately constant speed. Cruise missiles are designed to deliver a large warhead over long distances with high precision. Modern cruise missiles are capable of travelling at high subsonic, supersonic, or hypersonic speeds, are self-navigating, and are able to fly on a non-ballistic, extremely low-altitude trajectory. History The idea of an "aerial torpedo" was shown in the British 1909 film ''The Airship Destroyer'' in which flying torpedoes controlled wirelessly are used to bring down airships bombing London. In 1916, the American aviator Lawrence Sperry built and patented an "aerial torpedo", the Hewitt-Sperry Automatic Airplane, a small biplane carrying a TNT charge, a Sperry autopilot and a barometric altitude control. Inspired by the experiments, the United States Army developed a similar flying bomb cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walrus-class Submarine
The ''Walrus''-class submarine is the only submarine class currently in operation in the Royal Netherlands Navy. The boats have been in service since 1990 and are all named after sea mammals. History In 1974, the Royal Netherlands Navy announced, through the Ministry of Defence's 10-year plan , that it wanted to replace its aging s.H. Vredeling, C.L.J. van Lent, A. Stemerdink, pp. 61. Since the 1960s, the Royal Netherlands Navy had been conducting studies and research into a suitable replacement attack submarine. This research initiative concluded that the Netherlands should build conventional diesel-electric submarines, as nuclear submarines were costly and could only be constructed, crewed, and maintained by countries with major navies such as the United States, France and the United Kingdom. Nonetheless, even with the diesel-electric submarine, the Dutch government sought to work together with international allies to reduce construction costs. Between 1975 and 1978, the desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolphin-class Submarine
The ''Dolphin'' class (Hebrew: הצוללות מסדרת דולפין) is a diesel-electric submarine developed in Israel and constructed by Howaldtswerke-Deutsche Werft AG (HDW) in Kiel, Germany, for the Israeli Navy. The first boats of the class were based on the export-only German 209-class submarines, but modified and enlarged. The ''Dolphin'' 1 sub-class is slightly larger than the German Navy Type 212 in length and displacement. The three newer air-independent propulsion (AIP) equipped boats are similar to the Type 212 vessels in underwater endurance, but are longer, nearly 500 tonnes heavier in submerged displacement and have a larger crew than either the Type 212 or the Type 214. The ''Dolphin 2'' class are the largest submarines to have been built in Germany since World War II. The ''Dolphin''-class boats are the most expensive single vehicles in the Israel Defense Forces. The ''Dolphin'' class replaced the aging , which had served in the Israeli navy since the lat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harushio-class Submarine
The ''Harushio'' class is a diesel-electric submarine class operated by the Japanese Maritime Self-Defense Force (JMSDF). The design is an evolution from the being slightly larger and with better noise reduction. ''Asashio'', has been modified to test air-independent propulsion (AIP), and the remaining vessels were decommissioned and replaced by the ''Oyashio''-class. ''Natsushio'', ''Hayashio'', ''Arashio'' and ''Asashio'' are all named after World War II destroyers. Vessels See also * Hai Lung-class submarine * Walrus-class submarine * Dolphin-class submarine * Type 039 submarine * Upholder/Victoria-class submarine * Collins-class submarine * Lada-class submarine * S-80-class submarine The S-80 Plus class (or ''Isaac Peral'' class) is a Spanish class of four submarines—late-1990s design, initial production order in 2003, redesign/rebuild mid-2010s, and currently in production—being built by the state-owned Spanish company ... References * ''Jane's Fighting Ship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hai Lung-class Submarine
The ''Chien Lung'' class of submarine, also known as the ''Hai Lung'' (Sea Dragon) class, was manufactured in the Netherlands for the Republic of China (Taiwan) and is currently in service with its navy. They are a modified version of the Dutch Navy's which itself is based on the US . A new class of submarines being built by Taiwan's Indigenous Defense Submarine program, will eventually replace them. History The Republic of China (Taiwan) ordered two submarines, each based on the Dutch ''Zwaardvis'' design, in September 1981. The keels for both submarines were laid down by dock and yard company Wilton Fijenoord b.v Schiedam in December 1982, though initial construction of the submarines was delayed due to the builder's financial instability, work resumed in 1983. Both submarines were launched in 1986, ''Hai Lung'' on October 6 and ''Hai Hu'' on December 10. Sea trials for ''Hai Lung'' began in March 1987 and ''Hai Hu'' began its sea trials in January 1988. Both ships were transp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Submarine Classes In Service
The list of submarine classes in service includes all submarine classes currently in service with navies or other armed forces worldwide. For surface combatants, see the list of naval ship classes in service. Ballistic missile submarines Cruise missile submarines Nuclear-powered attack submarines Non-nuclear attack submarines with air-independent propulsion (AIP) * ** Builder: ** Displacement: 1,725 tons ** Operators: *** : 3 in service * ** Builder: , ** Displacement: 1,800 tons ** Operators: : 2 building * (Dolphin-2; AIP-variant) ** Builder: ** Displacement: 1,900 tons ** Operator: : 3 AIP in-service/sea trials, 3 AIP ordered * ** Builder: , ** Displacement: 1,647 tons ** Operators: : 3 in service * ''Qing''-class submarine **Builder: ** Displacement: 6,628 tons ** Operator: : 1 in service * ** Builder: ** Displacement: 3,426 tons ** Operator: : 1 on sea trials; 3 more building * ** Builder: / ** Displacement: 1,590 tons ** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People's Liberation Army Navy Submarine Force
The People's Liberation Army Navy Submarine Force (PLANSF) is the submarine service of the People's Liberation Army Navy. It consists of all types of submarines in operational service organized into three fleets: the North Sea Fleet, the East Sea Fleet, and the South Sea Fleet. Submarines have long been one of the three focuses of the People's Liberation Army Navy (the other two are aircraft and major surface combatants), and when the decision was made in late 2006 to concentrate on building other principal surface combatants to strengthen the air defense and to further delay the construction of aircraft carriers due to insufficient air cover, submarines will continue to play the lead dominant role in the assault force for the PLAN. Currently, PLANSF operates a fleet of 66 submarines which include nuclear as well as conventional submarines. Its surface branch counterpart is the People's Liberation Army Navy Surface Force. Nuclear-powered ballistic missile submarines The PLA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weekly Standard
''The Weekly Standard'' was an American neoconservative political magazine of news, analysis and commentary, published 48 times per year. Originally edited by founders Bill Kristol and Fred Barnes, the ''Standard'' had been described as a "redoubt of neoconservatism" and as "the neocon bible." Its founding publisher, News Corporation, debuted the title on September 18, 1995. In 2009, News Corporation sold the magazine to a subsidiary of the Anschutz Corporation. On December 14, 2018, its owners announced that the magazine was ceasing publication, with the last issue published on December 17. Sources attribute its demise to an increasing divergence between Kristol and other editors' shift towards anti-Trump positions, and the magazine's audience's shift towards Trumpism. Many of the magazine's articles were written by members of conservative think tanks located in Washington, including the American Enterprise Institute, the Ethics and Public Policy Center, the Foundation for Def ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Warning Receiver
Radar warning receiver (RWR) systems detect the radio emissions of radar systems. Their primary purpose is to issue a warning when a radar signal that might be a threat is detected, like a fighter aircraft's fire control radar. The warning can then be used, manually or automatically, to evade the detected threat. RWR systems can be installed in all kind of airborne, sea-based, and ground-based assets such as aircraft, ships, automobiles, military bases. This article is focused mainly on airborne military RWR systems; for commercial police speed detection radar RWR systems, see radar detector. Depending on the market the RWR system is designed for, it can be as simple as detecting the presence of energy in a specific radar band, such as the frequencies of known surface-to-air missile systems. Modern RWR systems are often capable of classifying the source of the radar by the signal's strength, phase and signal details. The information about the signal's strength and waveform can t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Direction Finder
Direction finding (DF), or radio direction finding (RDF), isin accordance with International Telecommunication Union (ITU)defined as radio location that uses the reception of radio waves to determine the direction in which a radio station or an object is located. This can refer to radio or other forms of wireless communication, including radar signals detection and monitoring (ELINT/ESM). By combining the direction information from two or more suitably spaced receivers (or a single mobile receiver), the source of a transmission may be located via triangulation. Radio direction finding is used in the navigation of ships and aircraft, to locate emergency transmitters for search and rescue, for tracking wildlife, and to locate illegal or interfering transmitters. RDF was important in combating German threats during both the World War II Battle of Britain and the long running Battle of the Atlantic. In the former, the Air Ministry also used RDF to locate its own fighter group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Support Measures
In military telecommunications, electronic support (ES) or electronic support measures (ESM) gather intelligence through passive "listening" to electromagnetic radiations of military interest. They are an aspect of electronic warfare involving actions taken under direct control of an operational commander to detect, intercept, identify, locate, record, and/or analyze sources of radiated electromagnetic energy for the purposes of immediate threat recognition (such as warning that fire control RADAR has locked on a combat vehicle, ship, or aircraft) or longer-term operational planning.Polmar, Norman "The U. S. Navy Electronic Warfare (Part 1)" ''United States Naval Institute Proceedings'' October 1979 p.137 Thus, electronic support provides a source of information required for decisions involving electronic protection (EP), electronic attack (EA), avoidance, targeting, and other tactical employment of forces. Electronic support data can be used to produce signals intelligence (SIG ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
