Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The latest HMS Warspite was the third of Britain''s nuclear-powered submarines, and the second (and final) of the Valiant class. She was launched on 25 September 1965 by Mary Wilson, the wife of the then British Prime Minister Harold Wilson, and entered service 18 April 1967. In October 1968, Warspite collided with a Russian Echo 2 submarine it had been shadowing in the Barents Sea, causing serious damage to its large central fin. The cover story, put out in The Times of Sunday 19 October, claimed that she had in fact hit an iceberg.