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>I'm not sure whether this is a FAQ and have been having difficulty accessing >the full techdiver archive, so here goes... > > Using nitrox to decompress after a deep dive looks to give substantial >advantages, either to increase safety margins or to decrease deco time for the >same safety margin. Using one of the pc packages (such as "Abyss") will allow >the gas switch at deco depth and hence calculate the reduced deco time for a >pre-planned dive profile (rectangular or otherwise). This is fine if you have >a rigid dive plan (knowing precise time to decend, bottom depth, etc). >Furthermore, having started the dive trip using nitrox/air tables, I am stuck >with these tables and cannot use my existing computer for any following dives >within 12/24 (?) hours. > > What I would like to do is to dive more flexibly than this. On any >given dive, I might not know the precise dive details beforehand for any one >of a number of reasons. My present air computer (Monitor II) allows me to >dive >in the way I wish. ie I have a dive plan, but can modify it either pre-dive or >during a dive as conditions dictate. What I would like to do is to dive in the >same way using a nitrox computer. > > > Do any of the nitrox computers coming onto the market allow a mid-dive >gas switch from air to nitrox at the deco stop ? > > If the answer to this is 'no', how do divers cope with the need to >dive >flexibly and the desire to reduce deco times using nitrox ? I can't see me >taking a laptop computer out in an inflatable boat to cut a new nitrox deco >table for a second or third dive, once I have decided where/when/how deep this >is going to be. Alternatively, from experience of the sort of diving we do and >the lack of control of all the parameters, I cannot see me planning precisely >all the dives at the beginning of the day (or the night before) and having >everything 'run like clockwork'. > > Any suggestions ? > > Regards, Steve M. > >****************************************************************************** >* * >* Dr. S. G. Millard * E-Mail : ec96@li*.ac*.uk* >* * >* Department of Civil Engineering, * Tel : 051 794 5224 (UK) >* University of Liverpool, * 44 51 794 5224 (Intern >* PO Box 147, * >ational) >* Liverpool L69 3BX, * Fax : 051 794 5218 (UK) >* UK. * 44 51 795 5218 (Intern >* * >ational) >******************************************************************************* > > >-- >Send mail for the `techdiver' mailing list to `techdiver@opal.com'. >Send subscription/archive requests to `techdiver-request@opal.com'. No current computer of any kind can once underwater allow for 02 deco etc. Some tables will allow for cutting 1/3 of the 30fsw, 20fsw, and 10fsw stops if using at least 80/20 mix. Many of us choose to "clear" all but the 10 fsw stops using our computers and then let the computer "hang" at 10fsw to "clear" if we plan another dive that day (shallow for sure). If we're talking Trimix, then we generate tables, plan our dives and dive our plan. We may however, have several variations on our slate or laminated tables made up for the dive. Harold Gartner hgartner@ra*.or* CompuServe ID 71470,1423 6900 Via Alba Camarillo, California 805 482-9743
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