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MV Cory Chouest
MV ''Cory Chouest'' is an ocean surveillance ship leased by the U.S. Navy in 1989 and assigned to the Navy’s Special Missions Program. ''Cory Chouest'' had all SURTASS equipment removed and was returned to her original owners in 2008 completing nearly 20 years of service. Construction ''Cory Chouest'' was acquired and modified by Edison Chouest Offshore for use by the U.S. Navy as a modified TAGOS vessel. Originally used as a research platform in conjunction with the , the Cory was later modified to carry an active and passive sonar system. The vessel served until October 2008 when it went off charter. Mission The mission of ''Cory Chouest'' is to directly support the Navy by using both passive and active low frequency sonar arrays to detect and track undersea threats. Operational history In January 1991, the ''Cory Chouest'' and ''Amy Chouest'' were used as part of the Heard Island feasibility test, an experiment to transmit low frequency sound through the ocean from Hear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edison Chouest Offshore
Edison Chouest Offshore (ECO), started as Edison Chouest Boat Rentals in 1960, is family of companies in the marine transportation business based in Cut Off, Louisiana. ECO owns and operates a fleet of Platform supply vessels, Subsea Construction / IMR vessels, a Riserless Light Well Intervention vessel, Anchor handling tug supply vessels, Oil Spill Response Vessels, and Well Stimulation Vessels, as well as an independently owned fleet of 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 ...s and Ice Breakers. ECO operates five shipyards: North American Shipbuilding (NAS) in Larose was started in 1974. Chouest added North American Fabricators, (NAF), in Houma, in 1996 (now part of LaShip), Estaleiro NavShip, in Brazil, in 2005, Gulf Ship, in Gulfport MS, in 2007, Tamp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maritime Call Sign
Maritime call signs are call signs assigned as unique identifiers to ships and boats. All radio transmissions must be individually identified by the call sign. Merchant and naval vessels are assigned call signs by their national licensing authorities. History One of the earliest applications of radiotelegraph operation, long predating broadcast radio, were marine radio stations installed aboard ships at sea. In the absence of international standards, early transmitters constructed after Guglielmo Marconi's first trans- Atlantic message in 1901 were issued arbitrary two-letter calls by radio companies, alone or later preceded by a one-letter company identifier. These mimicked an earlier railroad telegraph convention where short, two-letter identifiers served as Morse code Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ocean Surveillance Ship
''Stalwart''-class auxiliary general ocean surveillance ships (T-AGOS) were a class of United States Naval Ship (USNS) auxiliary support Ocean Surveillance Ships commissioned between April 1984 and January 1990. Their original purpose was to collect underwater acoustical information using the Surveillance Towed Array Sensor System The AN/UQQ-2 Surveillance Towed Array Sensor System (SURTASS), colloquially referred to as the ship's "Tail", is a towed array sonar system of the United States Navy. SURTASS Twin-Line consists of either the long passive SURTASS array or the Tw ... (SURTASS), a towed array passive sonar. ''Stalwart'', ''Indomitable'', and ''Capable'' were modified to support narcotics interdiction by removing SURTASS equipment and adding an air-search radar and tactical data link equipment. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-called compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine ( gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust (known as exhaust gas recirculation (EGR)). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and SODAR (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Missions Program
Military Sealift Command (MSC) is an organization that controls the replenishment and military transport ships of the United States Navy. Military Sealift Command has the responsibility for providing sealift and ocean transportation for all US military services as well as for other government agencies. It first came into existence on 9 July 1949 when the Military Sea Transportation Service (MSTS) became solely responsible for the Department of Defense's ocean transport needs. The MSTS was renamed the Military Sealift Command in 1970. Military Sealift Command ships are made up of a core fleet of ships owned by the United States Navy and others under long-term-charter augmented by short-term or voyage-chartered ships. During a time charter MSC takes control of a merchant ship and operates it for the chartered amount of time. During this time the ship is crewed by civilian mariners and MSC pays for all expenses. Time chartered ships are not subject to inspections from foreign gover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SURTASS
The AN/UQQ-2 Surveillance Towed Array Sensor System (SURTASS), colloquially referred to as the ship's "Tail", is a towed array sonar system of the United States Navy. SURTASS Twin-Line consists of either the long passive SURTASS array or the Twin-line array consisting of two shorter passive arrays towed side by side. The Twin-line Engineering Development Model was installed on USNS ''Assertive'', and the first production model was installed on USNS ''Bold''. Both ships are no longer serving as SURTASS units. , SURTASS was deployed on the four ''Victorious''-class vessels and the (a small-waterplane-area twin hull (SWATH) vessel). History SURTASS began as development program in 1973 using the new research vessel ''Moana Wave''. In 1980 SURTASS passed OPEVAL. The new ''Stalwart''-class ocean surveillance ships had the first contract awarded on 26 September 1980 and were similar to the prototype ship, the ''Moana Wave''. Initially the SURTASS system were passive, receive only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heard Island Feasibility Test
{{Disambiguation ...
Heard may refer to: *Hearing (sense) *Heard (surname) *The Heard, an American 1960s garage rock band *Heard Island and McDonald Islands, an Australian external territory *Heard County, Georgia, U.S. See also * Herd *Hird *Hurd (other) GNU Hurd or Hurd, is a Unix-like kernel that sets the base for the GNU operating system. Hurd may also refer to: Places * Hurd Peninsula, in the South Shetland Islands * Hurd's Deep, submarine valley in the English Channel * Hurds Lake, Ontario * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heard Island
The Territory of Heard Island and McDonald Islands (HIMI) is an Australian external territory comprising a volcanic group of mostly barren Antarctic islands, about two-thirds of the way from Madagascar to Antarctica. The group's overall size is in area and it has of coastline. Discovered in the mid-19th century, the islands lie on the Kerguelen Plateau in the Indian Ocean and have been an Australian territory since 1947. They contain Australia's only two active volcanoes. The summit of one, Mawson Peak, is higher than any mountain in all other Australian states or territories, except Dome Argus, Mount McClintock and Mount Menzies in the Australian Antarctic Territory. The islands are among the most remote places on Earth: They are located about southwest of Perth, southwest of Cape Leeuwin, Australia, southeast of South Africa, southeast of Madagascar, north of Antarctica, and southeast of the Kerguelen Islands (part of French Southern and Antarctic Lands). The isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. Along its core, the Indian Ocean has some large marginal or regional seas such as the Arabian Sea, Laccadive Sea, Bay of Bengal, and Andaman Sea. Etymology The Indian Ocean has been known by its present name since at least 1515 when the Latin form ''Oceanus Orientalis Indicus'' ("Indian Eastern Ocean") is attested, named after India, which projects into it. It was earlier known as the ''Eastern Ocean'', a term that was still in use during the mid-18th century (see map), as opposed to the ''Western Ocean'' (Atlantic) before the Pacific was surmised. Conversely, Chinese explorers in the Indian Ocean during the 15th century called it the Western Oceans. In Ancient Gree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Washington
The University of Washington (UW, simply Washington, or informally U-Dub) is a public research university in Seattle, Washington. Founded in 1861, Washington is one of the oldest universities on the West Coast; it was established in Seattle approximately a decade after the city's founding. The university has a 703 acre main campus located in the city's University District, as well as campuses in Tacoma and Bothell. Overall, UW encompasses over 500 buildings and over 20 million gross square footage of space, including one of the largest library systems in the world with more than 26 university libraries, art centers, museums, laboratories, lecture halls, and stadiums. The university offers degrees through 140 departments, and functions on a quarter system. Washington is the flagship institution of the six public universities in Washington state. It is known for its medical, engineering, and scientific research. Washington is a member of the Association of American Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon Pool
A moon pool is a feature of marine drilling platforms, drillships and diving support vessels, some marine research and underwater exploration or research vessels, and underwater habitats, in which it is also known as a wet porch. It is an opening in the floor or base of the hull, platform, or chamber giving access to the water below, allowing technicians or researchers to lower tools and instruments into the sea. It provides shelter and protection so that even if the ship is in high seas or surrounded by ice, researchers can work in comfort rather than on a deck exposed to the elements. A moon pool also allows divers, diving bells, ROVs, or small submersible craft to enter or leave the water easily and in a more protected environment. Moon pools can be used in chambers below sea level, especially for the use of scuba divers, and their design requires more complex consideration of air and water pressure acting on the moon pool surface. First use in oil drilling at sea Moon po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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