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Military submarines were invented by David Bushnell He was born in Saybrook Connecticut in 1742 and died in 1824 He built the first military submarine in 1775The name of this submarine was Bushnells Turtle The reason for this is because it looked like two turtle shells fused together to form an egg-like case Lead ballast kept the craft upright and it was propelled by hand-operated screw-like devices The submarine was submerged when a valve admitted sea-water into a ballast tank and rose when the tank was emptied by a hand pump The armament of the ship included a single gunpowder bomb with a time-fuse One of the key setbacks to this innovation to warfare was its lack of an onboard oxygen supply Lacking this Bushnells Turtle could only remain submerged for a half hourThe reason that this type of machine was developed was because Americans were looking for a way to ambush English shipsUnfortunately though Bushnells Turtle was a failure in its own right Even though its concept to sneak behind enemy lines undetected and wreak havoc was formidableSubmarines have come a long way since Bushnells Turtle with its hand powered controls to its lack of an onboard oxygen supply Today most military submarines are nuclear powered Therefore they are able to remain at sea for extended periods of time without having to return to port to refuel The reactors in most submarines are designed to provide propulsion for at least four-hundred thousand 400000 miles without refueling Try to imagine what your life would be like without the submarine Without it we may be living under German rule or everyone in the world would be at war Consider yourself lucky that William Bushnell had the perseverance to invent the military submarine It has truly changed everyones life
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