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> Message-Id: <c=US%a=_%p=microsoft%l=RED-03-MSG950911162849YR005502@re*> > From: "David Norton (Excell Data)" <a-davnor@mi*.co*> > To: "'techdiver@terra.net'" <techdiver@terra.net> > Subject: FW: deep air/IANTD > Date: Mon, 11 Sep 1995 16:28:49 -0700 > Encoding: 48 TEXT > X-Msxmtid: xmtp1950911233212RECVSMTP[01.51.01]000000c4-19368 > > xyzzy > > see below > ---------- > From: Jason Erik Richards[SMTP:rchrds@ld*.ne*] > Sent: Thursday, September 07, 1995 11:47 PM > To: techdiver@terra.net > Subject: re: deep air/IANTD > > 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. > > It would be nice to have all relevant concepts taught, but why? The > stepping stone approach. Adv. deep air is required as well in the IANTD > system because of the Gas Matching system they use as well as the finishing > touches on DECO. Adv. Deep Air is useless in the diving here because of > the cold you narc out real quick. Divers I know in Puget Sound don't do > 180 ft air dives. They use TriMix. > > Incremental classes makes sense for instructional design, because it makes > the modules contain core concepts. It doesn't teach tailoring for each > environment. Instructors have to do that. > > My questions to the agencies is: How do you group the core competencies for > tech diving without reteaching or having bad practices for the local > environment? > > That's the key. > > <rest del'd> > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. > > > > > >
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