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Submarines could develop a leak, resulting in flooding, or it could be smashed to bits if it dives too far underwater. If there is a problem with the oxygen system or CO2 scrubbers, the air could become saturated with Carbon Dioxide and everyone could possibly die from Hypoxia. But I worked for several years for a man who had been a 30 year submariner - a Master Chief. He told me the biggest danger on any submarine is fire - "because there is nowhere for the smoke to go".

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15y ago

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