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IANTD, TDI, etc. training standards aside, what you need to do is find a good instructor who won't do this regardless of what his agency tells him to do. This would be a fine litmus test question for your potential instructor. If he or she says "yes, you have to do the deep air" then move on and choose another. Jim ------------------------------------------------------------------- Learn About Trimix at http://www.cisatlantic.com/trimix/trimix.html > From: <deep-gasdiver@uk*.ne*> > Date: Tue, 21 Dec 1999 20:03:02 GMT > To: techdiver@aquanaut.com > Subject: Deep air to trimix > > At the risk of being flamed can someone explain the logic of forcing a diver > interested in going onto trimix into doing deep air dives??????? > > To get onto a trimix course one must first undertake a nitrox course, in some > instances two or three nitrox courses (basic, advanced and extended range) > which basically in the deeper dives has no benefit other than accelerated > decompression via the use of nitrox or pure 02 during deco. A perfect example > is a course covered in an article in the latest "Dive" magazine, this > editorial > explains how students on the divers lodge basic (TDI) trimix course simulate a > trimix dive to 45m dive with air as the back gas ???????????? What logic is > that > > If trimix or Heliox is the way to go why subject students or divers interested > in improving their diving safety and enjoyment to what is effectively deep air > diving. If He is safer than N2 then why should a diver not be able to use say > a > 21/12 or 21/18 mix ( or other ) to depths up to say 50 - 60 metres without > going through a nitrox course? If they want to use nitrox or pure 02 for deco > then they should undertake a course to cover the use of higher pp02 as a deco > gas > > I realise and understand that if a diver wishes to do deep trimix dives which > involve significant planning and skills then a greater level of experiance and > maybe an intermediate qualification is required before taking an advanced > trimix course but access to He should be made easier at the 30 - 60m ranges > > Mike > > > > > ---------------------------------------------------------- > This message was sent using http://uk2.net > UK's FREE Domains, FREE Dialup, FREE Webdesign, FREE email > > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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