CNS accumulation rate question

[cmint]

Wow, great answers. Thanks!

[kensuf]

FWIW, I'm with Tbone on the oxygen time at 20'. I like to move out of the 1.6 PO2 range when I can. On dives with more than 20 minutes of oxygen I religiously take a "back gas break" every 15 minutes, which helps to both manage your CNS clock and improve decompression by managing the vasoconstriction that Oxygen causes on your capillaries.

[PfcAJ]

http://archive.rubicon-foundation.or...123456789/8966

Seems to be no real difference deco wise in doing your last stop at 10ft vs 20ft.

CNS % isn't a good measure, imo. The only thing that seems to work is low bottom po2 and breaks to a low po2 gas on deco.

[CHartmann]

I prefer to stay at 20' when doing deco at Ginnie specifically because there is a very convenient hidden little ledge at 20' that I can lay on. If I go to 10' I end up getting kicked by the freedivers and curious snorkelers this time of year. Otherwise I would move shallower so I am not using as much O2.

[gschaut]

I prefer to stay at 20' when doing deco at Ginnie specifically because there is a very convenient hidden little ledge at 20' that I can lay on. If I go to 10' I end up getting kicked by the freedivers and curious snorkelers this time of year. Otherwise I would move shallower so I am not using as much O2.

Yeah. but on the ledge, you miss all the bikini scenery overhead.