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Weeeellll, actually deep air in this context (IANTD deep air) is a bit of a misnomer. It actually covers diving to 130' on air. Since most people in the uk do this without the aid of scuba, we tend to accept equivalent experience asa the pre requisite. Martin In your message dated Tuesday 12, September 1995 you wrote : > > From: "David Norton (Excell Data)" <a-davnor@mi*.co*> > > > > Goerge raises an interesting point that I had been wondering about > > > for quite some time. I was told that one of the requirements > > > for IANTD Trimix was a deep air course. > > > This seems quite backward. The purpose of diving trimix > > > is basically to reduce the amount of danger involved in > > > diving deep air (02 tox, narc, etc, etc.) am I right? > > > Why the hell would you require a class that teaches a > > > basically unsafe diving practice, when the whole purpose > > > is to reduce this same practice? (Perhaps it is safe > > > for you open water and wreck divers, but I dont see it.) > > > > > > I've taken the Deep Air and it teaches the gas management stuff and > > Oxygen > > > management stuff they didn't teach in Basic Nitrox. SO, for trimix you > > are > > > building on that without having to reteach the concepts again. > > I am strongly opposed to the requirement for deep air. I'm a deep air > wimp. I'll totally admit it. I figure I don't really want to go down > deeper then 150' on air. I want to remember my dives. I don't want to > remember, "Wow, I was sooo fukin' narked.. hunh hunh". > > Shouldn't experience count as well however? I mean jesus, gas > management and gas planning, why that's one of the primary things > that cave diving is about. > > Oxygen management, I suppose you mean in tracking the CNS clock.. > Well, when you're doing 2 hour dives on nitrox at 100' and then using > O2 for deco, yes, you triple check those numbers then have your > buddies triple check them as well.. Once again, ppO2's, I'm a wimp > there also. I'd rather stay in the water a little longer and run no > more then 1.3 during the course of a dive, 1.4 is MAXIMUM for me > during dive, and only briefly (well, I had to drop down to the bottom > there so I could be macho enough to have 132' as the max depth rather > then 125'). Yes, I will use O2 at 20', but only for 10 on then 10 off. > > And if you mean tracking OTU's, well, I don't bother wasting my time > with that.. I did some playing around once, and did some figuring > out.. In order for OTU's to be an issue for me I need to be spending > a lot more time in the water then I am. I must admit however that I > still enjoy watching the people log their OTU's.. "Hey Joe, I > got 47 OTU's on that dive, how many did you get?". Of course, these > are usually the same "strokes" (sorry George, I had to steal it) that > tell me they took a deep air course so they could go dive Eagles > Nest on air, and that they staged to the bat tunnel at Ginnie because > it's a big dive to go 1200' up the line. > > In summary, Yes, I want to get some sort of mix training in the > future. I'm an absolute wimp when it comes to deep air however. If > I'm told that I need to take a deep air course before I get into mix > then I probably will pass on mix diving. I usually do 6-9 stage dives > a month, gas switching is second nature to me, I do O2 deco with O2 > tables (thanks to Decom), and really have no desire to spend the > money for a course that I feel is worthless (deep air). I agree with > the original posters sentiments of "Why should you be forced to take > a deep air course BEFORE you are allowed to take a tri-mix course > when the whole purpose of the tri-mix course is to be safer then > using deep air?". Does anyone from IANTD care to comment? Tom? > > Ken > -- > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > Ken Sallot "Sallot's law of patches - A person's diving > CIRCA ability is inversely proportional to how > (904) 392-2007 many patches(stickers) they have on their > kens@uf*.ed* jacket(car)" > http://grove.ufl.edu/~ken > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > -- > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. > -- --------------------------------------------------------------------------- | Martin Smith deep blue diving ltd EMail martin@de*.de*.co*.uk* voice 01344 421545 fax 01344 862231 | | Mail sent via Demon Internet - | ---------------------------------------------------------------------------
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