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The SEALABs were experimental
undersea habitats where divers could live and work for extended
periods while pressurized. These underwater habitats were intended
to demonstrate the concept of saturation diving, which holds that
once a diver’s body is saturated with his breathing gas mixture, no
greater decompression time is required no matter how long the diver
remains under pressure. Saturation diving meant that divers’ time
on-the-job could be extended indefinitely without paying a
comparable penalty in time under decompression, provided the diver
was provided with a pressurized place to live when not
working.
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