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Special Report, Americas, Politics
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In 1939, the U.S. Navysubmarine Squalus sank during a test dive in 250 feet of water off the coast of New England. At the time, the Squalus was the most advanced sub in the Navy's fleet. There was a general feeling in those days that a submarine sinking meant that the crew would perish -- there were no established rescue methods or rescue equipment. Navy submarine expert Charles "Swede" Momsen had the brilliant idea to use a diving bell to carry rescue sailors down to the sub. A diving bell has a heavy platform attached to a bell-shaped cover. The bell is stabilized so it doesn't tilt, creating an airtight pocket of oxygen. Once the bell reached the sub, rescuers attached cables to the sub so they could tow it to the surface. Over the course of 39 hours and four trips, Momsen and his team were able to save the lives of all 33 crew members.




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