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Richie, fear and paranoia are two different thngs: paranoia is from the drug effect of nitrogen, fear is from the reality of the situation and getting settled in. I do not do deep dives anymore , so the 300 foot stuff will have to suffice for my experience level these days. The old days of 450's are long gone, but that was pure fear, and very high helium, like we use now at 300. I decended at 75 feet per minute - way way too fast. Now we take 6 minutes to go dwon 200 feet and another four to go the last 100 more for reasons of physiology than the effects of the helium - we want to keep coming back undamaged. The fact is that there is no reason on earth to do fast decents, and in fact that is what cuases the problems you describe. That is why the oil companies use slow decents. If you must do thess dives to catch your fish, and you are using a closed circuit rebreather, there is no reason you can not decend slowly. Bottom line- deep scuba ( which includes rb) is stupid, but then you are one of the very few who has anything approaching a legitimate reason to do it. I have no reason, I do not do it. Richard Pyle wrote: > > Irvine wrote: > > > Will, this effect is called "fear" - what more of these guys need - not > > pre hpns. It comes from the sudden realization that you are doing > > something very stupid, and then the environment becomes more facinating > > than the fear. > > Ah ha! Just as I suspected. You've never actually done a deep heliox > dive, have you....? Just try a few - especially with fast descents. > You'll come around. > > I'm not sure it's the same physiopathology as HPNS, but it ain't fear. My > fear level is ten times higher with narcosis than it is without narcosis. > Then, of course, there is the muscular stiffness that goes along with it; > but you probably won't hit that until below about 350-380. > > Aloha, > Rich -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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