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SSN-774 Virginia-class New Attack Submarine NSSN CenturionThe Secretary of Defense in his October 1993 bottom-up review determined that production of the Seawolf class submarine would cease with the third submarine, and that the Navy should develop and build a new attack submarine as a more cost-effective follow-on to the Seawolf class, with construction beginning in fiscal year 1998 or 1999 at Electric Boat. The New Attack Submarine is the first U.S.
The Naval Surface Forces of the Ministry of Defense are reporting today that three nuclear-powered Akula-class submarines belonging to the 24th Submarine Division of the Northern Fleet successfully “war-gamed” the American aircraft carrier USS Theodore Roosevelt photo 1st right causing it to “flee in terror” towards the waters off the Hampshire coast in the United Kingdom. All information comes from wikipedia.org, cia.gov, icanw.org, government websites and press releases. Owner of this site is not responsible for potential mistakes or lacks of data.
Submarine to be designed for battlespace dominance across a broad spectrum of regional and littoral missions as well as open-ocean, 'blue water' missions.Virginia is intended to be a submarine comparable in most respects to its immediate predecessor - the Seawolf - but in a more affordable configuration. The missions of Virginia include Covert Strike Warfare, Anti-Submarine Warfare, Covert Intelligence Collection/Surveillance, Covert Indication and Warning and Electronic Warfare, Anti-Surface Ship Warfare, Special Warfare, Covert Mine Warfare, and Battle Group Support.The New Attack Submarine is designed for multi-mission operations and enhanced operational flexibility. SEAWOLF (SSN-21)-Class quieting has been incorporated in a smaller hull while military performance has been maintained or improved. Compared with the Seawolf, the NSSN is slower, carries fewer weapons, and is less capable in diving depth and arctic operations. On the other hand, the NSSN is expected to be as quiet as the Seawolf, will incorporate a vertical launch system and have improved surveillance as well as special operations characteristics to enhance littoral warfare capability. While the 688-I submarines are noisier than the improved Russian Akula class, the Seawolf is quieter than Akula and the projected Russian SSN-P-IX class.
At her top speed, Virginia-class makes less noise than the 688-I submarines do at 5 knots.The primary design driver for the NSSN is acoustic quietness equal to that of the Seawolf, even at the cost of reducing maximum top speed. With a focus on the littoral battlespace, the New Attack Submarine has improved magnetic stealth, sophisticated surveillance capabilities, and Special Warfare enhancements.The New Attack Submarine is engineered for maximum design flexibility, responsiveness to changing missions and threats, and affordable insertion of new technologies to ensure that it will continue to be the right submarine well into the 21st Century. Integrated electronic systems with Commercial-Off-The-Shelf (COTS) components facilitate state-of-the-art technology introduction throughout the life of the class and avoid unit obsolescence. The Navy has never attempted such a large-scale integration effort on a submarine. While the BSY-1 and BSY-2 systems did have some level of integration, the NSSN combat system will have to be totally integrated.
Both the BSY-1 combat system for the Improved Los Angeles-class and the BSY-2 combat system for the Seawolf-class submarines had problems that resulted in late delivery and increased costs.The Command, Control, Communications, and Intelligence (C3I) electronics packages also promote maximum flexibility for growth and upgrade.
Contents CharacteristicsThe aft end of the control room for the in June 2009 CapabilitiesAccording to the, the top speed of the submarines of the Los Angeles class is over 25 knots (29 mph or 46 kph), although the actual maximum is classified. Some published estimates have placed their top speed at 30 to 33 knots. In his book Submarine: A Guided Tour Inside a Nuclear Warship, Tom Clancy estimated the top speed of Los Angeles-class submarines at about 37 knots.The gives the maximum operating depth of the Los Angeles class as 650 ft (200 m), while, in his book Running Critical, suggests a maximum operating depth of 950 ft (290 m). Although Tyler cites the 688-class design committee for this figure, the government has not commented on it. The maximum diving depth is 1,475 ft (450 m) according to Jane's Fighting Ships, 2004–2005 Edition, edited by Commodore Stephen Saunders of the Royal Navy. Weapons and fire control systemsA portside bow view of the fore section of the tied up at the pier in February 1994: The doors of the Mark 36 vertical launch system for the Tomahawk missiles are in the 'open' position.Los Angeles class submarines carry about 25 torpedo tube-launched weapons and all boats of the class are capable of launching horizontally (from the torpedo tubes). The last 31 boats of this class also have 12 dedicated (VLS) tubes for launching Tomahawks.Engineering and auxiliary systemsTwo watertight compartments are used in the Los Angeles-class submarines.
The forward compartment contains crew living spaces, weapons-handling spaces, and control spaces not critical to recovering propulsion. The aft compartment contains the bulk of the submarine's engineering systems, power generation turbines, and water-making equipment. Some submarines in the class are capable of delivering through either the system or the (program canceled in 2006 and rendered unusable in 2009). A variety of atmospheric control devices are used to remain submerged for long periods of time without ventilating, including an oxygen generator nicknamed 'the bomb'. It's called 'the bomb' because it electrically removes the bonds of hydrogen and oxygen which makeup water.
This produces Oxygen for the crew and highly explosive Hydrogen. The hydrogen is pumped overboard but there is always a risk of fire or explosion from this process.The with an attachedWhile on the surface or at snorkel depth, the submarine may use the submarine's auxiliary or emergency diesel generator for power or ventilation (e.g., following a fire). The diesel engine in a 688 class can be quickly started by compressed air during emergencies or to evacuate noxious (nonvolatile) gases from the boat, although 'ventilation' requires raising of a snorkel mast. During nonemergency situations, design constraints require operators to allow the engine to reach normal operating temperatures before it is capable of producing full power, a process that may take from 20 to 30 minutes. Retrieved 27 March 2012.
Retrieved 2013-08-07. Retrieved 20 April 2008. 'General Characteristics, Los Angeles class.
Speed: 20+ knots (23+ miles per hour, 36.8 +km/h)'. ↑ Polmar, Norman; Moore, Kenneth J.
Cold War Submarines:The Design and Construction of U.S. And Soviet Submarines.
11 January 2005. Retrieved 20 April 2008.
'The submarine was traveling in excess of 33 knots - about 35 mph - when its nose hit the undersea formation head-on, officials said.' . ↑ from Federation of American Scientists retrieved 29 February 2008: The 18 SSN-688 class submarines that will be refueled in their midlives could make good candidates for a service life extension because they could operate for nearly 30 years after the refueling.
After these submarines serve for 30 years, they could undergo a two-year overhaul and serve for one more 10-year operating cycle, for a total service life of 42 years. ↑ Polmar, Norman 'The U. Navy Electronic Warfare (Part 1)' United States Naval Institute Proceedings October 1979 p.137. (1986). Running Critical. New York: Harper and Row. Pp. 24, 56, 66–67.
ISBN. (2003). The Right Thing.
Integrity Publishers. Pp. xi (map/diagram). 'This reference is for operating depth only'.
Tyler, (1986). 66-67, 156. 'Notes in pp. 64-67: Deliberations of ad-hoc committee on SSN 688 design taken from confidential sources and from interviews with Admiral Ret Rickover.'
From Tyler, p. 365.
Saunders, (2004). 838.
SSN-688 Los Angeles Class Design. At Globalsecurity.org. Accessed on 7 January 2009. Polmar & Moore, (2003). 263.
Treadwell Supplies Oxygen Generator Components for Nuclear Subs 28-January-2008. Fairbanks Morse Engines Accessed on 29 April 2008. Auxiliary Division on USS Cheyenne from Federation of American Scientists. Accessed on 29 April 2008. Firefighting and Damage Control Update (1998) Accessed on 29 April 2008. DiMercurio, Michael; Benson, Michael (2003).
The complete idiot's guide to submarines. New York, NY: Alpha Books. ISBN. Elger, Wallace (2005). 'Development of Metal Fiber Electrical Brushes for 500kW SSMG Sets'. Digital object identifier.
Nuclear Propulsion at Federation of American Scientists Accessed on 30 April 2008. (1984). The Hunt for Red October.
Naval Institute Press. Pp. 71, 77, 81. ISBN. (2009).: The Official Movie Novelization.
ISBN. Bennett, Tara (2009).: The Official Companion. March 14, 2007. Retrieved July 19, 2012.References.
This article includes information collected from the, which, as a U.S. Government publication, is in the public domain. (1984). The Hunt for Red October. Annapolis, Maryland:.
ISBN. DiMercurio, M.; Benson, M (2003). The Complete Idiot's Guide to Submarines. ISBN. Hutchinson, R (2001). Jane's Submarines: War Beneath the Waves from 1776 to the Present Say.
London: HarperCollins. ISBN. Polmar, N; Moore, K. Cold War Submarines: The Design and Construction of U.S. And Soviet Submarines.:. ISBN. (1986).
Running Critical. New York: Harper & Row. ISBN. (2003). The Right Thing.
Nashville, Tennessee: Integrity Publishers. ISBN. (2004)., 2004-2005.: Jane's Information Group Limited. ISBN.External linksWikimedia Commons has media related to. at.
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