A journey inside the submarines that patrolled beneath the surface to keep the peace during the Cold War, from a Royal Navy officer and engineer. During the Cold War, nuclear submarines quietly helped prevent a third world war, keeping watch and maintaining the deterrent effect of mutually assured destruction. For security reasons, very few knew the inside stories—until now. Eric Thompson is a career nuclear submarine officer who served from the first days of the Polaris missile boats until after the Cold War, ending up as the top engineer in charge of the Navy's nuclear power plants. Along the way, he helped develop all manner of kit, from guided torpedoes to the Trident ballistic missile system. In this vivid personal account of his submarine operations, he reveals what it was like to literally have your finger on the nuclear button. He leads the reader through top-secret submarine patrols, hush-hush scientific trials, underwater weapon developments, public relations battles with nuclear protesters, arm wrestling with politicians, and the changes surrounding gender and sexual preference in the Navy. It is essentially a human story, rich in both drama and comedy, like the Russian spy trawler that played dance music at passing submarines. There was never a dull moment—but it was always a deadly serious game. Among other subjects, Thompson discusses: • The two American nuclear submarines Thresher and Scorpion, which sank with no survivors during the Cold War • The history of submarines, including the Hunley a Confederate submarine during the US Civil War, which was the first sub to ever sink a ship—though it did so kamikaze-style • What a submarine base is like • How a Soviet sub in the Mediterranean was flushed out, earning the crew a crate of champagne from America • The author's personal experience with the Polaris and Trident classes of submarine, and more "Interesting, sometimes thought provoking, but above all an entertaining read." — Nuclear Futures