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Hi Folks I am really going out on a limb here, I am not yet a tech diver, I only have my Nitrox course but some further thoughts on this topic that occured to me.... People that are deep diving are taking a fair amount of gear with them, all the cylinders + backup etc. Then we add in task loading and narcosis.. Is it a possibility to leave this all on the surface? Say four divers go out, two stay on the surface along with all the tanks and a gas managment console and the two divers use a full-face (AGA, Kirby-morgan) mask with communication gear go down on surface supply. This means that the gas decisions are made by a person on the surface that is not task loaded and not narced.It also means the guys on the surface always know what is happening. Then they swap. I know this is not cheap but how does it compare to the current costs and the suggested costs of rebreathers.(plus the cost of mistakes)We are only adding the surface supply hose and the console and comms. The tech diving comunity is adopting commercial gas mixes, why do we not also adopt their safety practises. Terry P.S. does anybody know what the depth limitations of surface supplied equip is? -- ******************************************************************** Terry McCracken GEC ALSTHOM Information Technology Software Support Engineer Ph: 61 2 415 0509 terrym@ns*.co*.au* Fax: 61 2 417 8635
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