Through dramatic incidents tells for the first time the full story of the development of Cold War naval intelligence from the end of WWII to the breakup the Soviet Union in 1991, from both sides, East and West. Unlike other accounts, which focus on submarine confrontations and accidents, the authors cover all types of naval intelligence, human collection (racing with the Soviets to capture Nazi subs, successful and losing spies and defectors), signal intelligence (surface, air, satellite and navy commando teams in balaclavas launched by speed boats from subs), acoustic (passive underwater arrays and tapping phone lines), and the aerial and space reconnaissance. The authors give details of operations in all these areas, some of which were witnessed first hand. "A new light is shed on the spy ships incidents of the 1960s and on submarine intrusions in Swedish waters. Excerpts of the Soviet Navy instructions on UFOs and accounts of Soviet naval encounters with unexplained objects are also published for the first time outside of Russia; and much more.