Between 15 June 1968 and 13 May 1996, the Polaris submarines of the 10th Submarine Squadron carried out a total of 229 patrols, travelling over 2 million miles. Wherever you sit on the nuclear debate, it makes an impressive tale; delivered on time and on budget essentially by a small group of naval officers and civil servants, the Polaris programme ensured that Britain had a Continuous at Sea Dete...