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>#What is the latest thought and data if any on omitting the 10 foot stop by 
>#extending the 20 foot stop?
>
>Many divers in the UK are effectively doing just that under BSAC 1988 tables.
>Ok, in that implementation 10 ft becomes 3m and 20 ft becomes 6m (19.5ft), but 
>what is 6 inches between friends?

I think what he means is doing his 10 ft stop at 20 ft when breathing 100%
O2 since this effectively gives the same gradient for inert gas removal
whilst keeping the ambient pressure higher and therefore the propensity to
form bubbles lower. If air is breathed, the partial pressure gradient of
inert gas at 20 ft will be lower than at 10 ft and therefore outgassing
will be slower.

That's the theory, anyway.



Andy Pitkin
apitkin@ad*.de*.co*.uk*

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