hudMqB-HqiQ submarines-total-war-at-sea Submarines | Total War at Sea! During World War II, submarines became increasingly important. From the Cold War on, they could even destroy the earth with nuclear missiles. C3gI-pt-7K0 submarines-from-raider-to-wolfpack Submarines | From Raider to Wolfpack When submarines were first used more than 100 years ago, hardly anyone believed in their usefulness. Many admirals were convinced that the simple "submersibles" could not stand up to the powerful battleships. l3OPDWUjTsc the-worlds-largest-submarine-ever-built-how-big-is-it The World's Largest Submarine Ever Built | How Big Is It? The SSBN Typhoon-class submarine, officially designated the Akula (“Shark”) in Russia, is a Cold War behemoth measuring 175 meters long and displacing 48,000 tonnes as it sinks.