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George Most interesting stuff... >In real life, you are btter off moving up and taking the gradient >offgassing as bubbles while still underwater than you are sucking on the >wrong gas and lengthening the stops, Going pack to your suggested deco profile: Profile 220' FOR 25 16/50, 50% and O2 DEPTH TIME GAS 160-120 1 MINUTE EACH ON BG 110 1 100 1 090 1 080 1 070 5 50/50 060 2 050 3 040 5 030 8 020 13 OXYGEN 20-0 8 I would like to better understand what you mean by "moving up". Following a failure of the 50%, are you suggesting that you continue the deco as if 50% had been available i.e. follow the schedule but on BG. Or are you saying that 16% is so worthless that you would skip the stops and go straight to O2 at 20', if so what kind of ascent would you do from 70' to 20' to give your system a chance to cope with the bubbles? David Shimell Email: shimell@se*.co* <mailto:shimell@se*.co*> Project Manager, IBM NUMA-Q, Sequent Computer Systems Limited, Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK registered in England and Wales under company number: 1999363, registered office as above -----Original Message----- From: kirvine@sa*.ne* [SMTP:kirvine@sa*.ne*] Sent: Thursday, January 06, 2000 4:48 PM To: Ian PINKSTONE Cc: techdiver@aquanaut.com Subject: Re: I think I understand Ian, these decos are so severely overstated that a loss of a gas is insignificant. I did a whole Wakulla deco on my 190 bottle right through 20 feet on a 30 minute bt at 300 and never got hit, using a schedule for switching. I kept screwing up the gas switch and not knowing it. I only found out when I got to 20 feet and my O2 was not there, and I then saw that my 120 and 70 bottle were both untouched, and that I was about out of gas on my 190 bottle. So much for deco. In real life, you are btter off moving up and taking the gradient offgassing as bubbles while still underwater than you are sucking on the wrong gas and lengthening the stops, and in real life if you have anything approaching the deocompression time that you are suggesting here, you not only have support with extra gases available, you have buddies to share with. I just did a dive wher I shared the 70 bottle with my dive partner last Sunday, and it worked fine. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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