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Chang Bogo-class Submarine
The ''Jang Bogo''-class submarine (Hangul: 장보고급 잠수함, Hanja: 張保皐級潛水艦) or KSS-I (Korean Submarine-I) is a variant of the Type 209 diesel-electric attack submarine initially developed by Howaldtswerke-Deutsche Werft (HDW) of Germany, intended for service with the South Korean Navy and Indonesian Navy. A Daewoo (DSME)-upgraded model of the ''Jang Bogo'' class Type 209 was exported by Korea to Indonesia in 2012, amid heavy competition from Russian, French, and German-Turkish consortiums including from Germany's original Type 209. The variant was considered for possible purchase by Thailand as well, as both newly built and second-hand options. The class is named for ancient Korean maritime figure Jang Bogo. Armaments The ''Jang Bogo''-class submarines are armed with eight bow torpedo tubes and fourteen torpedoes. The ships are also armed with Sub-Harpoon missiles and can be armed with 28 mines in place of torpedoes and Harpoon missiles. The class is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howaldtswerke-Deutsche Werft
Howaldtswerke-Deutsche Werft GmbH (often abbreviated HDW) is a German shipbuilding company, headquartered in Kiel. It is part of the ThyssenKrupp Marine Systems (TKMS) group, owned by ThyssenKrupp. The Howaldtswerke shipyard was founded in Kiel in 1838 and merged with Hamburg, Hamburg-based Deutsche Werft to form Howaldtswerke-Deutsche Werft (HDW) in 1968. The company's shipyard was formerly used by Friedrich Krupp Germaniawerft until the end of World War II. History HDW was founded October 1, 1838 in Kiel by engineer August Howaldt and entrepreneur under the name ''Maschinenbauanstalt und Eisengießerei Schweffel & Howaldt'' (Machine Factory and Iron Foundry Schweffel & Howaldt), initially building boilers. The first steam engine for naval purposes was built in 1849 for Von der Tann (gunboat), ''Von der Tann'', a gunboat for the small navy of Schleswig-Holstein. In 1850, the company built an early submarine, ''Brandtaucher'', designed by Wilhelm Bauer. It had been intended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bow (ship)
The bow () is the forward part of the hull of a ship or boat, the point that is usually most forward when the vessel is underway. The aft end of the boat is the stern. Prow may be used as a synonym for bow or it may mean the forward-most part of the bow above the waterline. Function A ship's bow should be designed to enable the hull to pass efficiently through the water. Bow shapes vary according to the speed of the boat, the seas or waterways being navigated, and the vessel's function. Where sea conditions are likely to promote pitching, it is useful if the bow provides reserve buoyancy; a flared bow (a raked stem with flared topsides) is ideal to reduce the amount of water shipped over the bow. Ideally, the bow should reduce the resistance and should be tall enough to prevent water from regularly washing over the top of it. Large commercial barges on inland waterways rarely meet big waves and may have remarkably little freeboard at the bow, whereas fast military ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nagapasa-class Submarine
The ''Nagapasa'' class is an upgraded variant of the , also known as Improved ''Chang Bogo''. The vessels were built by the South Korean Daewoo Shipbuilding & Marine Engineering (DSME) and the Indonesian PT PAL. As of 2021, six ships have been planned, which were divided into two batches. Batch 1 consists of three ships and all are already commissioned. Batch 2 also consists of three ships that are in the early development stage. The class is named for weapon of Indrajit, ''Nagapash'' (). Development In December 2011, DSME won a contract to build three 1,400-ton s for Indonesia at a cost of $1.07 billion. Construction of the submarines started in January 2012 for delivery by 2015 and 2016, and for commissioning in the first half of 2018. They are equipped with torpedoes and guided missiles. The submarines were described to be Korea's original model, bigger and more advanced than Indonesia's refurbished Type 209/1300. Initially the offered submarines were going to be in-service Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inertial Navigation System
An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors (gyroscopes) and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the need for external references. Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors (magnetometers) and/or speed measuring devices. INSs are used on mobile robots and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft. Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous. Design Inertial navigation is a self-contained navigation technique in which measurements provided by accelerometers and gyroscopes are used to track the position and orientation of an object ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safran
Safran S.A. () is a French Multinational corporation, multinational aerospace, defence industry, defence and computer security, security corporation headquartered in Paris. It designs, develops and manufactures both commercial and military aircraft engines; launch vehicle, spacecraft propulsion, spacecraft and missile propulsion systems; as well as various other aerospace and military equipment and devices. The company was founded in 2005 through a merger between the aerospace engine manufacturer SNECMA and the electronics specialist SAGEM. Safran's subsequent acquisition of Zodiac Aerospace in 2018 significantly expanded its aeronautical activities. Employing over 92,000 people and generating 27.31 billion euros in revenue in 2024, the company is listed on the Euronext stock exchange and is part of the CAC 40 and Euro Stoxx 50. Name The name Safran was chosen from 4,250 suggestions, including 1,750 proposed by employees. As a holding company for many subsidiaries, the name was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
L3 Technologies
L3 Technologies, formerly L-3 Communications Holdings, was an American company that supplied command and control, communications, intelligence, surveillance and reconnaissance ( C3ISR) systems and products, avionics, ocean products, training devices and services, instrumentation, aerospace, and navigation products. Its customers included the Department of Defense, Department of Homeland Security, United States Intelligence Community, NASA, aerospace contractors, and commercial telecommunications and wireless customers. In 2019, it merged with Harris Corporation to form L3Harris Technologies. L3 was headquartered in Murray Hill, Manhattan, New York City. History L3 was formed as L-3 Communications in 1997 to acquire certain business units from Lockheed Martin that had previously been part of Loral Corporation. These units had belonged to Lockheed Corporation and Martin Marietta, which had merged three years before in 1993. The company was founded by (and named for) Frank Lanz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indra Sistemas
Indra Sistemas, S.A. () is a Spanish information technology and defense company. Indra is listed on the Bolsa de Madrid and is a constituent of the IBEX 35 index. The current executive chairman is Ángel Escribano. In 2018 and 2019 Indra was fined for participating in a 14-year cartel rigging the contracts for Spanish railway infrastructure and leading a 15-year cartel rigging the offers of IT services to several public administrations in Spain. Business areas Indra is organized around three business areas: information technologies, simulation & automatic test equipment, and defense electronic equipment. Indra's portfolio ranges from consultancy, project development, and systems and applications integration to outsourcing of IT systems and business processes, structured into two primary segments: solutions and services (including outsourcing and application maintenance), and business processes where technology is a strategic and differentiating element ( BPO). This includes: * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlas Elektronik
Atlas Elektronik GmbH is a naval/marine electronics and systems business based in Bremen, Germany. It is involved in the development of integrated sonar systems for submarines and heavyweight torpedoes. The company was a subsidiary of BAE Systems until December 2005, when it was sold to ThyssenKrupp and EADS. Atlas Elektronik became a wholly owned subsidiary of ThyssenKrupp Marine Systems in 2017. History Early history The company was founded in 1902 as ''Norddeutsche Maschinen- und Armaturenfabrik GmbH'', focusing on shipbuilding and naval engineering services. Its name was changed in 1911 to ''Atlas Werke AG'', the origin of its modern-day name. During the First World War, Atlas Werke built U-boats for the Imperial German Navy. After the war, the company shrank in size and began to focus on civilian technology, due to restrictions imposed by the Treaty of Versailles. Following the Nazi seizure of power, the company grew to become an arms supplier for the Kriegsmarine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LIG Nex1
LIG Nex1 Co., Ltd. (), formerly known as LG Innotek () is a South Korean aerospace manufacturer and arms manufacturer. It was established in 1976 as Goldstar Precision. LIG Nex1 was previously owned by LIG Holdings Company, which in turn was owned by the LIG Group. In 2013, a consortium led by South Korea private equity firm STIC Investments acquired 49 percent stake in LIG Nex1 for 420 billion Korean won. It develops and produces a wide range of advanced precision electronic systems, including missiles, underwater weapon systems, radars, electronic warfare, avionics, tactical communication systems, fire control systems, naval combat systems, and electro-optics. It is one of the major suppliers of weapon systems for the Republic of Korea Armed Forces, as well as an international exporter of weapon systems. History The company was established on February 25, 1976, under the name Goldstar Precision Industries () as a subsidiary of Goldstar Electronics (now LG Electronics). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithium-ion Battery
A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li+ ions into electronically conducting solids to store energy. Li-ion batteries are characterized by higher specific energy, energy density, and energy efficiency and a longer cycle life and calendar life than other types of rechargeable batteries. Also noteworthy is a dramatic improvement in lithium-ion battery properties after their market introduction in 1991; over the following 30 years, their volumetric energy density increased threefold while their cost dropped tenfold. In late 2024 global demand passed per year, while production capacity was more than twice that. The invention and commercialization of Li-ion batteries has had a large impact on technology, as recognized by the 2019 Nobel Prize in Chemistry. Li-ion batteries have enabled portable consumer electronics, laptop computers, cellular phones, and electric cars. Li-ion batteries also see signifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Educational Broadcasting System
Korean Educational Broadcasting System () or EBS is a South Korean educational public radio and television network covering South Korean territory, and the only major South Korean radio and television network joint venture Ministry of Science and ICT and Ministry of Education without a separate regional service. It was established as KBS 3 and KBS Educational Radio in the 1980s, and became an independent corporation in 1990. Funding Though nominally a public broadcasting entity, EBS gets most of its yearly budget from advertisements and sales revenue. In 2012, 72.1% of its revenue came from textbook sales, publications and ad revenues on its TV Radio and internet platforms, while the rest came from TV license fees (EBS gets 3% of the total License Fee being collected by the Korean Broadcasting System) and government grants. CEOs Channels * EBS1 — EBS' main terrestrial channel for premium documentaries, preschool and youth program. (Channel 10.1) * EBS2 — E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hae Sung
The SSM-700K C-Star (Haeseong; , Sea Star) is a ship-launched sea-skimming surface-to-surface anti-ship cruise missile developed by the South Korean Agency for Defense Development (ADD), LIG Nex1 and the Republic of Korea Navy in 2003. The missiles have deployed on KDX-II and KDX-III destroyers as of 2006, each carrying 8 and 16 of the missiles respectively, and on s. Development history During the 1970s, the Republic of Korea Navy decided to import Exocet anti-ship missiles to deter North Korea's naval provocations. Considering the fact that the Korean People's Navy was then and now mostly composed of multiple small to midsize ships, a cheap, small guided anti-ship missile was proposed. In 1978, the Korean Agency for Defense Development (ADD) started the development of the ''Hae Ryong'' anti-ship missile, and by 1987, the ROK Navy approved for the mass production of the missiles. But the ''Hae Ryong'' was fitted with a semi-active laser guidance system, limiting its tact ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
