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In a message dated 6/7/00 10:38:15 AM, phi@sk*.be* writes: << If you guys are so concerned about O2 tox, what would you do in this real life scenario ? This actually happened when we were in Croatia diving a few months back. The first diving choice was blown off, so this was the back-up site: 1. Diving off an underwater pinnacle with the sea floor at 70m rising to the highest point at ~7.5m underwater. 2. Drift deco not possible (for whatever reason: shipping lane, no chase boat, etc.). 3. Boat anchor sways so much that a 10-ft Jon line still wouldn't work. 4. Current goes over the top of the pinnacle require constant moderate swimming the whole deco to stay *in place* at 6m or less. Question: Would you... A. Go lay on the top of the pinnacle at ~7 - 7.5m to deco on 100% at rest, or B. Swim in place at 6m at moderate work load to deco on 100% ? I am curious as what others would do. And to force a choice between A and B, let's say you can't deco on deep deco mix (50%) or bottom mix. -Phi >> Hi Phi, In this case if I were worried about O2 toxicity (let's say the highest point was 30 feet), I might tie off a line on some reasonably high point underwater, make myself neutral or just a tiny bit positive and let out enough line to deco comfortably. After the deco was done, I'd scoot down a few meters and untie the line. But that's just one approach to your "theoretical problem". Take care and safe diving, Scott -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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