Editing Valiant-class submarine (section)

==Service==
The ''Valiant''s were primarily used in the anti-submarine role, important during the [[Cold War]]. In 1967 ''Valiant'' set a [[Royal Navy]] (RN) record of sailing 12,000 miles (19,312&nbsp;km) submerged in twenty-eight days, from [[Singapore]] to the [[United Kingdom|UK]]. Both boats received a number of refits, including the capability to use the [[Boeing Harpoon|Harpoon missile]]. ''Valiant'' and other nuclear fleet submarines served in the [[Falklands War]] in 1982.

The ''Valiant''s had long careers: ''Warspite'' was decommissioned in 1991, and ''Valiant'' in 1994, due to cracks being discovered in her primary to secondary cooling system. They were very successful and served as the template for the {{sclass|Resolution|submarine|0}} ballistic missile submarine and subsequent {{sclass|Churchill|submarine|0}} fleet submarines.