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Sea Shadow
''Sea Shadow'' (IX-529) was an experimental stealth ship built by Lockheed for the United States Navy to determine how a low radar profile might be achieved and to test high-stability hull configurations that have been used in oceanographic ships. Development ''Sea Shadow'' was built in 1984 to examine the application of stealth technology on naval vessels and was used in secret until a public debut in 1993. In addition, the ship was designed to test the use of automation to reduce crew size. The ship was created by the Defense Advanced Research Projects Agency (DARPA), the U.S. Navy and Lockheed. ''Sea Shadow'' was developed and built at Lockheed's Redwood City, California, facility, inside the Hughes Mining Barge (HMB-1), which functioned as a floating dry dock during construction and testing. History ''Sea Shadow'' had a SWATH (small-waterplane-area twin hull) design. Below the water were submerged twin hulls, each with a propeller, aft stabilizer, and inboard hydrof ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stealth Ship
A stealth ship is a ship that employs stealth technology construction techniques in an effort to make it harder to detect by one or more of radar, visual, sonar, and infrared methods. These techniques borrow from stealth aircraft technology, although some aspects such as wake and acoustic signature reduction ( acoustic quieting) are unique to stealth ships' design. Although radar cross-section (RCS) reduction is a fairly new concept, many other forms of masking a ship have existed for centuries or even millennia. Shaping In designing a ship with a reduced radar signature, the main concerns are radar beams originating near or slightly above the horizon (as seen from the ship) coming from distant patrol aircraft, other ships, or sea-skimming anti-ship missiles with active radar seekers. Therefore, the shape of the ship avoids vertical surfaces, which are effective at reflecting such beams directly back to the emitter. Retro-reflective right angles are eliminated to avoid the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Navy Sea Shadow Stealth Craft
US or Us most often refers to: * ''Us'' (pronoun), the objective case of the English first-person plural pronoun ''we'' * US, an abbreviation for the United States US, U.S., Us, us, or u.s. may also refer to: Arts and entertainment Albums * ''Us'' (Brother Ali album) or the title song, 2009 * ''Us'' (Empress Of album), 2018 * ''Us'' (Mull Historical Society album), 2003 * ''Us'' (Peter Gabriel album), 1992 * ''Us'' (EP), by Moon Jong-up, 2021 * ''Us'', by Maceo Parker, 1974 * ''Us'', mini-album by Peakboy, 2019 Songs * "Us" (James Bay song), 2018 * "Us" (Jennifer Lopez song), 2018 * "Us" (Regina Spektor song), 2004 * "Us" (Gracie Abrams song), 2024 * "Us", by Azealia Banks from '' Fantasea'', 2012 * "Us", by Celine Dion from ''Let's Talk About Love'', 1997 * "Us", by Gucci Mane from ''Delusions of Grandeur'', 2019 * "Us", by Spoon from '' Hot Thoughts'', 2017 Other media * US Festival, two 1980s California music festivals organized by Steve Wozniak * ''Us'' (1991 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casemate
A casemate is a fortified gun emplacement or armoured structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" means a double city wall with the space between the walls separated into chambers, which could be filled up to better withstand battering rams in case of siege (see .) In its original early modern meaning, the term referred to a vaulted chamber in a fort, which may have been used for storage, accommodation, or artillery which could fire through an opening or embrasure. Although the outward faces of brick or masonry casemates proved vulnerable to advances in artillery performance, the invention of reinforced concrete allowed newer designs to be produced well into the 20th century. With the introduction of ironclad warships, the definition was widened to include a protected space for guns in a ship, either within the hull or in the low ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alameda, California
Alameda ( ; ; Spanish for "Avenue (landscape), tree-lined path") is a city in Alameda County, California, United States, located in the East Bay (San Francisco Bay Area), East Bay region of the Bay Area. The city is built on an informal archipelago in San Francisco Bay, consisting of Alameda (island), Alameda Island, Bay Farm Island, Alameda, California, Bay Farm Island and Coast Guard Island, along with other smaller islands. As of the 2020 United States census, 2020 census, the city's population was 78,280. History Ohlone era Alameda originally occupied a peninsula connected to Oakland, California, Oakland. The area was low-lying and marshy, while higher ground was part of one of the largest coastal oak forests in the world. A local band of the Ohlone tribe inhabited the region for more than 3,000 years. They were present at the time of the arrival of the Spanish in the late 18th century. The Ohlone created numerous oyster shell mounds across the peninsula, some as large as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Services Administration
The General Services Administration (GSA) is an Independent agencies of the United States government, independent agency of the United States government established in 1949 to help manage and support the basic functioning of federal agencies. GSA supplies products and communications for U.S. government offices, provides transportation and office space to federal employees, and develops government-wide cost-minimizing policies and other management tasks. GSA employs about 12,000 federal workers. It has an annual operating budget of roughly $33 billion and oversees $66 billion of procurement annually. It contributes to the management of about $500 billion in U.S. federal property, divided chiefly among 8,397 owned and leased buildings (with a total of 363 million square feet of space) as well as a 215,000-vehicle fleet vehicle, motor pool. Among the real estate assets it manages are the Ronald Reagan Building, Ronald Reagan Building and International Trade Center in Washingto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Wall Street Journal
''The Wall Street Journal'' (''WSJ''), also referred to simply as the ''Journal,'' is an American newspaper based in New York City. The newspaper provides extensive coverage of news, especially business and finance. It operates on a subscription model, requiring readers to pay for access to most of its articles and content. The ''Journal'' is published six days a week by Dow Jones & Company, a division of News Corp. As of 2023, ''The'' ''Wall Street Journal'' is the List of newspapers in the United States, largest newspaper in the United States by print circulation, with 609,650 print subscribers. It has 3.17 million digital subscribers, the second-most in the nation after ''The New York Times''. The newspaper is one of the United States' Newspaper of record, newspapers of record. The first issue of the newspaper was published on July 8, 1889. The Editorial board at The Wall Street Journal, editorial page of the ''Journal'' is typically center-right in its positio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Vessel
A research vessel (RV or R/V) is a ship or boat designed, modified, or equipped to carry out research at sea. Research vessels carry out a number of roles. Some of these roles can be combined into a single vessel but others require a dedicated vessel. Due to the demanding nature of the work, research vessels may be constructed around an icebreaker hull, allowing them to operate in polar waters. History The research ship had origins in the early voyages of exploration. By the time of James Cook's ''Endeavour'', the essentials of what today we would call a research ship are clearly apparent. In 1766, the Royal Society hired Cook to travel to the Pacific Ocean to observe and record the transit of Venus across the Sun. The ''Endeavour'' was a sturdy vessel, well designed and equipped for the ordeals she would face, and fitted out with facilities for her "research personnel", Joseph Banks. As is common with contemporary research vessels, ''Endeavour'' also carried out more t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USNS Victorious
USNS ''Victorious'' (T-AGOS-19) is a ''Victorious''-class ocean surveillance ship which was acquired by the U.S. Navy in 1991 and assigned to the Military Sealift Command (MSC) Special Missions Program. Built in Morgan City, Louisiana ''Victorious'' was built by McDermott Shipyards, Morgan City, Louisiana. She was laid down on 12 April 1988 and launched on 3 May 1990 and was delivered to the U.S. Navy on 13 August 1991. Special program ''Victorious'' was crewed by 19 civilian mariners under the control of the Military Sealift Command (MSC) and staffed with five sponsors. She is of a small waterplane area twin hull (SWATH) design, similar to a catamaran, which provides a stable platform for towing the ship's SURTASS sonar arrays. Incidents with China On March 4, 2009, ''Victorious'' was involved in one of a string of incidents between US research ships and Chinese ships. While operating in international waters, roughly 120 miles off the coast of mainland China in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USNS Impeccable
USNS ''Impeccable'' (T-AGOS-23) is an ''Impeccable''-class ocean surveillance ship acquired by the U.S. Navy in 2001 and assigned to Military Sealift Command's Special Missions Program. Construction ''Impeccable'' was built by American Shipbuilding, Tampa, Florida. The contract was awarded on 28 March 1991. The ship's keel was laid down on 15 March 1992, but the Tampa shipyards went bankrupt by November 1993. On 3 December 1992, the General Accounting Office published a report that concluded that T-AGOS 24–27 should not be built. Shortly afterwards the government decided to discontinue this class of ships, but ''Impeccable'' was to be completed as the sole ship in her class. The hull was towed to Gulfport, Mississippi, in 1995 where she was finished by Halter Marine Inc. She was launched on 28 August 1998 and was delivered to the Navy on 22 March 2001 which assigned her to the Military Sealift Command (MSC) Special Missions Program. Design The ship is a designated T-AGOS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lockheed Martin
The Lockheed Martin Corporation is an American Arms industry, defense and aerospace manufacturer with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta on March 15, 1995. It is headquartered in North Bethesda, Maryland, United States. As of January 2022, Lockheed Martin employs approximately 121,000 employees worldwide, including about 60,000 engineers and scientists. Reports from 2024 estimate that Lockheed Martin Corporation (LMT) holds a market cap of around $139.7 billion. Lockheed Martin is one of the largest companies in the aerospace, military support, security, and technologies industry. It was the world's largest defense contractor by revenue for fiscal year 2014.POC Top 20 Defence Contractors of 2014 . Retrieved: July 2015 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benicia, California
Benicia ( , ) is a city in Solano County, California, located on the north bank of the Carquinez Strait in the North Bay (San Francisco Bay Area), North Bay region of the San Francisco Bay Area. It served as the List of capitals in the United States, capital of California for nearly thirteen months from 1853 to 1854. The population was 27,131 at the 2020 United States census. Benicia is just east of Vallejo, California, Vallejo and across the strait from Martinez, California, Martinez. History The City of Benicia was founded on May 19, 1847, by Robert B. Semple, Dr. Robert Semple, Thomas O. Larkin, and Comandante General Mariano Guadalupe Vallejo, on land donated to them by General Vallejo in December 1846. It was named for the General's wife, Francisca Benicia Carillo de Vallejo, a member of the Carrillo family of California, a prominent Californio dynasty. The General intended that the city be named "Francisca" after his wife, but this name was dropped when the former city ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
