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Inside Submarines (Inside Military Machines)
Inside Submarines - Inside Military Machines Author:Chris Oxlade Believe it or not, submarines date back to the seventeenth century! Discover how they developed from early designs such as the one-person Turtle into streamlined, stealthy warships. Along the way, you'll look right inside a German U-boat, find out how a sub dives and surfaces, and see sonar systems and video periscopes at work. From torpedoes to... more » nuclear reactors, learn how submarine technology and strategy have changed throughout military history, and experience life under the waves.« less