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We do. But the purpose of the class is to test one’s abilities following directions the first time, not the plan b. Lol
Pretty sure you learned from the same guy I learned from. :)
Probably not.
 
2x12L cylinders are pretty small, for those of us on this side of the pond that's basically LP77's.

Wow. I would never dream of doing a 330ft dive on such small tanks. My HP133 doubles (7532 liters) would be the one's I'd take.
 
Wow. I would never dream of doing a 330ft dive on such small tanks. My HP133 doubles (7532 liters) would be the one's I'd take.
And I have done 110m with a bottomtime of 17 minutes on a twin12. I am lucky to have a low rmv/sac. But then it was time to move to ccr.
But with ccr, your bailout is oc gas.
 
https://www.shearwater.com/products/peregrine/
http://cavediveflorida.com/Rum_House.htm

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