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Topic: Vanguard class submarine

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Trafalgar class submarine

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	Vanguard class submarine - Wikipedia, the free encyclopedia
		The principle of operation is based on maintaining deterrent effect by always having at least one submarine at sea, and was designed for the Cold War period.
		One submarine is normally undergoing maintenance and the remaining two in port or on training exercises.
		However, the British government announced in 1998 that each submarine would carry only 48 warheads (halving the limit specified by the previous government), which is an average of three per missile.
	en.wikipedia.org /wiki/Vanguard_class_submarine (681 words)

	Encyclopedia: Vanguard class submarine (Site not responding. Last check: 2007-11-07)
		The tenth HMS Vanguard (S28) of the British Royal Navy is the lead boat of her class of Trident ballistic missile-capable submarines and is based at the Clyde Naval Base, Faslane, Vanguard was built at Barrow-in-Furness by Vickers Shipbuilding and Engineering Ltd (now BAE Systems Marine), was...
		The Vanguard class of submarines are nuclear powered which means they can run submerged for long periods of time: their only limiting factor being the need for food.
		Since 1998 Vanguard class submarines not on patrol have been able to make port visits, something which the Resolution class were never permitted, and which gives a unique chance to see one of these huge vessels (4 times the displacement of a Type 23 frigate).
	www.nationmaster.com /encyclopedia/Vanguard-class-submarine (806 words)

	Facts about topic: (Vanguard class submarine) (Site not responding. Last check: 2007-11-07)
		The principle of operation is based on maintaining deterrent effect by always having at least one submarine at sea, and was designed for the Cold War (A state of political conflict using means short of armed warfare) period.
		It has been suggested that British ballistic missile submarine patrols are coordinated with those of the French (The Romance language spoken in France and in countries colonized by France).
		At the time it was envisaged the entire project; four submarines, the missiles, new facilites at Coulport and Faslane and a 5% contribution to Trident research and development, would cost £5 billion.
	www.absoluteastronomy.com /encyclopedia/v/va/vanguard_class_submarine.htm (467 words)

	Vangaurd Class Ballistic Missile Submarines
		Vanguard conducted first of class sea trials between October 1992 and 1995, undertaking the first test firing in 1994 and embarking on her first operational patrol later that year.
		The Resolution Class were retired from service as the Vanguard Class became operation, with the Repulse decommissioning in 1996 and bringing the age of Polaris to an end.
		submarines, one of which was HMS Torbay, escorted her as she left the Clyde approaches and headed into the open ocean..
	www.btinternet.com /~warship/Today/trident.htm (1905 words)

	Astute class submarine
		The Astute-class of submarine comprises the largest nuclear-powered attack submarines to be built for the Royal Navy.
		Original plans were for seven boats of the Astute class to replace five Swiftsure-class submarines (Sovereign[?], Superb[?], Sceptre[?], Spartan[?], and Splendid[?]) and the two oldest Trafalgar-class boats (Trafalgar[?] and Turbulent[?].
		These names were last given to Amphion class submarines that entered service towards the end of World War II.
	www.ebroadcast.com.au /lookup/encyclopedia/as/Astute_class_submarine.html (461 words)

	Naval Technology - SSBN Vanguard Class - Ballistic Missile Submarine
		Vanguard is undergoing sea trials, including test launching of Trident II D5 ballistic missiles, before being returned to operational deployment.
		D5 missiles for the Vanguard Class will carry a maximum of four warheads and, in 1999, it was announced that each vessel would carry a maximum of 48 warheads.
		Vanguard is fitted with four 533mm torpedo tubes and carries the Tigerfish and Spearfish torpedoes supplied by BAE Systems.
	www.naval-technology.com /projects/vanguard (932 words)

	(1993- ) Vanguard (Trident) (Site not responding. Last check: 2007-11-07)
		The Vanguard submarines are based at the Royal Naval Base at Faslane in Scotland.
		Vanguard is fitted with four 533 mm torpedo tubes and carries the Tigerfish and Spearfish torpedoes supplied by BAE Systems.
		The submarine is fitted with two SSE Mark 10 launchers for deployment of Type 2066 and 2071 decoys.
	www.submariners.co.uk /Boats/Barrowbuilt/Vanguard (672 words)

	Statement on the Defence Estimates 1996 (Site not responding. Last check: 2007-11-07)
		They are by far the largest submarines ever manufactured in the United Kingdom; a special manufacturing facility, the Devonshire Dock Hall, had to be purpose-built at Barrow for their construction.
		The Vanguard Class submarines are larger than the Resolution Class mainly because of the need to accommodate the Trident D5 missile.
		Although each Vanguard Class submarine is capable of carrying 192 warheads, we have made clear that the boats will deploy with no more than 96, and possibly with significantly fewer.
	www.fas.org /news/uk/mod96/c4tx2.htm (570 words)

	HMS Vanguard (S28) - Wikipedia, the free encyclopedia
		The tenth HMS Vanguard (S28) of the British Royal Navy is the lead boat of her class of Trident ballistic missile-capable submarines and is based at the Clyde Naval Base, Faslane,
		Vanguard was built at Barrow-in-Furness by Vickers Shipbuilding and Engineering Ltd (now BAE Systems Marine), was launched on March 4, 1992, and commissioned on August 14, 1993.
		The refit was completed in June 2004 and in October 2005 Vanguard completed her return to service trials (Demonstration and Shakedown Operations) with the firing of an unarmed Trident missile.
	en.wikipedia.org /wiki/HMS_Vanguard_(S28) (258 words)

	What we do
		The missiles are carried in vertical tubes in the mid section of the submarine and are fired from beneath the surface.
		When fired, a missile is ejected from the submarine by high pressure gas and only when it breaks the surface does the first rocket stage actually fire.
		In spite of their huge size they are among the quietest submarines in the world and are extremely difficult to detect.
	www.awe.co.uk /main_site/about_awe/what_we_do (1568 words)

	THEY COME UNSEEN
		The Vanguard submarines were built by Vickers Shipbuilding and Engineering Ltd.(now part of BAE Systems) at Barrow-in-Furness.
		They are the largest submarines manufactured in the UK, displacing 15,900 tonnes submerged,twice the displacement of the Resolution class Polaris submarines which they replaced.
		The Vanguard class submarine's main nuclear powered propulsion system is based on the second-generation Rolls Royce PWR 2, which was developed specifically for the Vanguard class.
	www.geocities.com /rossgundlach/theycomeunseen.htm (566 words)

	HMNB Clyde - Wikipedia, the free encyclopedia
		During the 1960s, the United Kingdom began negotiations with the United States of America regarding the purchase of a Polaris nuclear missile system to be fired from 5 specially constructed submarines.
		In the 1980s, the British Government announced plans to replace the Polaris submarines with the newly developed Trident missile system, also to be based at Faslane.
		The Swiftsure class is the older of the two SSN classes of the Royal Navy and is due to be replaced by the Astute class submarines.
	en.wikipedia.org /wiki/HMNB_Clyde (620 words)

	Royal Navy: Ballistic Submarines
		The first Vanguard class submarine was launched in 1993 carrying Trident II D5 missiles and is now the cornerstone of our Defence policy and significantly contributes to the Alliance's deterrent forces.
		Ballistic missile submarines must at all times have a robust and reliable link with their chain of command on the mainland.
		The messes in Vanguard are comfortable and well appointed, fulfilling the role of dining room, lecture hall, lounge, games area and venue for church services.
	www.royal-navy.mod.uk /static/pages/177.html (736 words)

	NRDC: Nuclear Data - Table of British Nuclear Forces, 2002
		The submarine on patrol will be at a reduced alert state and will carry out a range of secondary tasks; its missiles will be detargeted, and after notice the SSBN will be capable of firing its missiles within several days rather than within several minutes, as during the cold war.
		The fourth and final submarine of the class, Vengeance, was launched on September 19, 1998 and commissioned on November 27, 1999 at the Marconi-Marine Shipyard in Barrow-in-Furness.
		While the submarines were being checked for similar reactor problems, other anti-submarine warfare (ASW) assets such as frigates, ASW helicopters, and maritime patrol aircraft were used to guard survey transit areas around the shallow waters of the Irish Sea.
	www.nrdc.org /nuclear/nudb/datab18.asp (1382 words)

	Vanguard - United Kingdom Nuclear Forces
		However, the complement of a Vanguard Class boat is smaller - 132 officers and men compared to a Polaris submarine's crew of 149.
		The Vanguard Class boats include a number of improvements over previous British submarines, including a new design of nuclear propulsion system and a new tactical weapon system for self-defence purposes both before and after missile launch.
		The submarine in reserve may be armed with 11 missiles with 8 warheads, 4 missiles with 1 warhead on each, plus an Active Inert Missile during trials.
	www.fas.org /nuke/guide/uk/slbm/vanguard.htm (683 words)

	Radioactive Waste Management Advisory Committee (RWMAC) \| DEFRA
		Those generated both from the operation of the submarines, and work carried out on them within the area of the naval base, are first transferred to DRDL before their eventual disposal under the company's RSA93 authorisations.
		The civil regulation excludes the area of the naval base and actual submarine operations, which are subject to NNRP regulation, the procedures for which were radically revised in 1997 (see paragraph 6.11 of the main report and Annex 3).
		Enhanced submarine reactor systems, although with the major concepts designed as long as 20 years ago, are now entering service in the new Vanguard Class vessels.
	www.defra.gov.uk /rwmac/reports/modwaste/17.htm (3233 words)

	A Rich Heritage of Innovation
		USS Louisiana, the 18th and final SSBN in the class, was commissioned in 1997.
		Currently, seven Ohio-class submarines are deployed in the Pacific Ocean with Trident I (C4) missiles.
		In addition to missile launch tubes, each submarine’s gas generator, cooling chamber, launch control group, and electronics also will be converted to the D5 configuration.
	www.navyleague.org /seapower/october2000/dwyer.htm (1706 words)

	Trafalgar Class Nuclear Fleet Submarine
		Additionally fleet submarines can be used in a surveillance role and the Trafalgar class are fitted with cameras and thermal imaging periscopes for this kind of operation.
		Trafalgar Class submarines displace 5,208 tonnes submerged and measure 85.4 metres in length and 9.8 metres in beam.
		In fact, the state of the entire class was brought into question in August 2000 when it was revealed only one of the seven boats was fully operational.
	www.btinternet.com /~warship/Today/tboat.htm (983 words)

	BBC News \| ENGLAND \| Waste hitch threatens Trident refit
		But the Trident-armed Vanguard submarines build up far more tritium than the Trafalgar-class vessels that have been refitted at Plymouth.
		A large police operation is planned for the arrival of the port's first Trident-armed Vanguard class submarine.
		Police at Faslane, where the submarines are based, have given advice about protests, and the Special Branch has been consulted about the risk of terrorism.
	news.bbc.co.uk /hi/english/uk/england/newsid_1795000/1795294.stm (457 words)

	Royal Navy Celebrates Submarine Service Centenary (Site not responding. Last check: 2007-11-07)
		This weapon allows submarines to influence the land battle by posing a threat in the period prior to hostilities and, after hostilities commence, directing highly accurate and lethal warheads against important targets, which may otherwise be relatively invulnerable.
		Construction on the second submarine of the class, HMS Ambush, is due to start later in 2001, with the third, HMS Artful, following subsequently.
		Whilst the RN and U.S. submarine forces had been allies throughout their history, the close and special co-operation we see today did not really take off until the 1950s with the advent of nuclear power.
	www.chinfo.navy.mil /navpalib/cno/n87/usw/issue_12/royal_celebrates.html (1252 words)

	LETTER TO PLYMOUTH CITY COUNCIL FROM CND (Site not responding. Last check: 2007-11-07)
		This alternative will not be available for work on the next submarine of the class.
		understands that two Trafalgar class submarines are at the moment unable to leave port due to safety concerns related to the well-publicised Tireless fault in this class of submarine, again proving an embarrassment for the Navy.
		The reactors in the Trafalgar class are not dissimilar to one fitted to the Vanguard class.
	www.cnduk.org /pages/press/plymlet.htm (490 words)

	BBC News \| ENGLAND \| Inquiry demand as Trident costs soar
		The BBC had already discovered costs of preparing the yard at Plymouth were millions of pounds higher than the dockyard operator DML was thought to have promised.
		Devonport won the contract to refit the Vanguard-class Trident submarines in 1993, despite a fierce battle by union leaders to keep the work at Rosyth.
		It is already home to Trafalgar-class nuclear-powered submarines, and is now the sole refit base for the Royal Navy's underwater fleet.
	news.bbc.co.uk /2/low/uk_news/england/1804719.stm (370 words)

	British, French, and Chinese nuclear forces \| thebulletin.org
		A missile that is deployed on a U.S. submarine may later be deployed on a British one, or vice versa.
		The first submarine of the class, the HMS Vanguard, went on its first patrol in December 1994.
		The estimated yields of the 11 nuclear tests since 1990 suggest that one warhead may be in the 100-to 200-kiloton range and another one in the 600-to 700-kiloton range.
	www.thebulletin.org /article_nn.php?art_ofn=nd96norris (3092 words)

	ISN Security Watch - Britain's secret nuclear submarine plans
		With each submarine capable of carrying up to 16 Trident D5 II submarine-launched nuclear ballistic missiles (SLBMs), each armed with up to 48 100-kiloton nuclear warheads, the Vanguard class is Britainâs sole nuclear deterrent and cost some Â£9 billion (over US$16.5 billion) to develop.
		While the Vanguard class is due to be decommissioned in about 2020, it was designed during the Cold War, and there is now a greater requirement for cost-effective, multi-role military equipment in the post-Cold War international security environment.
		Such a decision would also suit the submarineâs future role in warfare, where it is expected to act more as a command and control centre to direct military operations rather than undertaking its traditional role of anti-submarine and anti-shipping warfare.
	www.isn.ethz.ch /news/sw/details.cfm?ID=9062 (1493 words)

	2002 Press Releases
		The Royal Navy's Vanguard Class nuclear submarines will be refitted and refuelled in 9 Dock - now renamed in honour of the Queen's 50th year on the throne, the Queen's Golden Jubilee Dock - which has been converted specially for the purpose.
		The new Vanguard Class refitting and refuelling facilities are part of the massive D154 project at the heart of the dockyard's modernisation and redevelopment scheme.
		The cradles that will support the submarine while in the dock have also been designed to withstand the loads that would be generated in an earthquake.
	www.halliburton.com /news/archive/2002/kbrnws_031802.jsp (478 words)

	Trafalgar class submarine (Site not responding. Last check: 2007-11-07)
		It is an attack submarine and essentially a refinement of the Swiftsure class designed six years later than predecessor.
		The first Trafalgar class submarine was in 1983.
		Rather than the seven-bladed propeller used by the Swiftsures Trafalgar class use pump-jet propulsion - a high pitch propellor which is much quieter but much than conventional propeller designs.
	www.freeglossary.com /Trafalgar_class_submarine (238 words)

	Trident missile (Site not responding. Last check: 2007-11-07)
		There are 14 active US Ohio class submarines and 4 UK Vanguard class submarines equipped with the two variants of Trident: the initial Trident-I (C-4) UGM-93A and subsequent Trident-II (D-5) UGM-133A.
		After the missile leaves the tube and rises through the water over the submarine (in a bubble of gas water never contacts the missile) the first stage motor ignites, the aerospike extends, and the boost stage begins.
		Trident I missiles were also installed in 12 SSBNs of the James Madison class submarine and Benjamin Franklin class submarine classes, replacing the Poseidon missile missiles previously installed in those units.
	read-and-go.hopto.org /US-Navy-munitions/Trident-missile.html (493 words)

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