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Cam - Let me start by saying that I am completely ignorant of all decompression theory. With out all this mathematical crap, it basically comes down to the fact that the navy recommended 60ft/min ascent to your first deco stop is way too fast. The way JJ put it was that it has been empirically shown (by commercial diving research) that a slow, continuous ascent is the best. Unfortuantely, we can't do that without a chamber, so we simulate it artifically by inserting short stops. Just take a look at what a couple one minute stops staggered between your bottom depth and your first gas switch do to your overall average ascent rate. Another thing to consider, of course, is your "Deepest possible" deco stop. This has been demonstrated in that rag "immersed", but the idea is that at some point, one or more of your tissue compartment's absorbed pressures is going to be above ambient, and at that point, you are offgassing. (Supposedly JJ/GUE are working on a program that provides this information) Of course, the real trick is how to credit your longer shallow stops given the proper deeps stops, which is what the WKPP has figured out, and that's how they get out of the water so fast. One of the few benefits of being a guinea pig :-) and also one of the few secrets they keep. At 08:23 AM 3/31/1999 -0800, you wrote: >Okay, I've lurked, and read archives for awhile, but I haven't seen this >discussed. > >Can someone explain to me how deep-decompression stops work? It seems >on the face of it that on a deep deco stop (70-100 fsw) you would >absorbing more N2 or He into your body in the absolute sense. > >So, please enlighten me. Thanks. > >Cam >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > ----------------------------------------------- Kevin Connell <kevin@nw*.co*> NW Labor Systems, Inc http://www.nwls.com And I suppose you want a user interface with that..... ----------------------------------------------- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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