Valiant class submarine
The "Valiant"-class was the first fully British nuclear fleet submarine, as the first nuclear submarine, HMS|Dreadnought|S101|6, used an American nuclear reactor. There were only two boats of the class, the first boat, "Valiant" (the nameship) being commissioned just three years after "Dreadnought" in
1966, while "Warspite" commissioned the following year. Both were built by Vickersat Barrow-in-Furness.
The class were based on "Dreadnought", but were enlarged by twenty feet (6 m) and had an increased dived displacement of 4,900 tons compared to 4,000 tons. They were more polished than "Dreadnought" in the sense that they ran significantly quieter under main power, and also had a Paxman diesel-electric generator that could be used for silent running in emergencies. In most other respects (outside the power plant), the "Valiant"s were identical to "Dreadnought".
The "Valiant"s were primarily used in the anti-submarine role, a role that was prominent in the
Royal Navy(RN) during the Cold War. In 1967, "Valiant" set a then RN record of sailing 12,000 miles (19,312 km) submerged in twenty-eight days, from Singaporeto the UK. Both boats received a number of refits during their service in the RN, including the capability to use the Harpoon missile. HMS "Valiant" took part in the Falklands War, one of a number of nuclear fleet submarines to do so.
The "Valiant"s had long careers with the Royal Navy, with "Warspite" being decommissioned in
1991. The nameship, "Valiant", was decommissioned in 1994due to cracks being discovered in her primary to secondary cooling system. The "Valiant"s were very successful and served as the template for the sclass|Resolution|submarine|0 ballistic submarine and subsequent Sclass|Churchill|submarine|0 fleet submarines.
* "The Encyclopedia of Warships, From World War Two to the Present Day", General Editor Robert Jackson
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