|Re: The magic of 130|
Posted by jlyle on June 25, 2006 at 07:52:40:|
In Reply to: The magic of 130 posted by Diver Z on June 24, 2006 at 22:50:33:
I don't know exactly when, but the 130 foot limit for open circuit compressed air diving is stated in many early U.S. Navy diving manuals and publications. The Navy limit for surface supplied air is 190 feet.
The 130 foot limit on open-circuit compressed air is due to a combination of factors:
1. Concerns with mechanical imitations early regulator performance at depth.
2. Air volume limitations of scuba tanks.
3. Military diving mission requirements.
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