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single deco gas For some dives using the OEA51 as the "single" deco gas could be much safer in my opinion. One example would be a shoal dive where you have heavy and/or unpredictable 6 knots current and the top of the reef extends to only 12m. Perhaps there are dive 3 teams in the water. In this case a dive to the 40-50m ranges you specified. The OEA51 would be the safer single deco-gas as you could knock out nearly all of the deco obligation before hitting the drift. -----Original Message----- From: "Manos Manoli"<cytech@ma*.co*.cy*> To: techdiver@aquanaut.com Cc: "Gliviak, Jozef"<Jozef.Gliviak@co*.co*>, techdiver@aquanaut.com Date: Fri Aug 31 00:31:27 PDT 2001 Subject: one deco gas - N50 or O2, when? >OK ! I think that still there where no clear answers on Jozef question >which was >my question as well. >What we got was mostly what everyone was using rather than why. >I run several scenarios on Deco-Planner with depths from 40-55m >It seams that the 50/50 benefits over O2 only a minute or 2 on short >dive times >in the range of 40-50m where stops below 6m where short. Further more on >longer >dives ( 30-40minutes ) the difference was bigger 50/50 was getting you >out of the water > 10 -12 minutes faster. > >I personally like to curry the O2 on 40-50m dives mainly for 3 reasons. >1: It like to breath it on surface if anything gets screwed up. >2: Im worried of over-loading my cns clock just before getting to the >last 6m looong stop. >3: Most of my dives are in the range of 40-50m so i don't have to blend >50/50 all the time. > > In the other hand : >1: If i use 50/50 im out faster >2: If im using 50/50 and making most of my deco in the range of 21-9m >then don't i end up with >less microbubles ?????? > >Rgds Manos Manoli >Limassol-Cyprus >www.smiley.cy.net/cytech > >Amount of quality dive time means far more , than any >number of dives and any number of C-cards. > > >Manos Manoli wrote: > >> Right ! Can we have all the answers in public pls since this one im >> sure its a popular question. >> >> Gliviak, Jozef wrote: >> >>> Hello guys, >>> >>> Recently we had a disscussion with a few friends where some of them >>> advocated usage of N50 instead of O2 typically for dives like >>> 55m/15min. My >>> opinion would be to choose O2 rather then N50. >>> Can you please answer me if there are a situations when it is more >>> appropriate to use just N50 instead of oxygen. Please add a few >>> examples of >>> dives where would you choose O2 and where N50 as the only deco gas. >>> >>> Best regards >>> >>> Jozef Gliviak >>> Slovakia >>> >>> ----------------------------------- >>> The answer I received from George is too general for me to see where >>> is the >>> effective border >>> Trey: >>> Depends on the bottom gas. Oxygen if the dive is shallow, 50% if it is >>> deeper . The idea is to get good deco at all the intermediate steps, >>> relieving the need for oxygen up high. Go by the bottom gas and the >>> time. >>> Add gases as needed. >>> -- >>> Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >>> Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. >>> >> > >-- > >Rgds Manos Manoli >Limassol-Cyprus >www.smiley.cy.net/cytech > >Amount of quality dive time means far more , than any >number of dives and any number of C-cards. > > > > >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. ___________________________________________________ GO.com Mail Get Your Free, Private E-mail at http://mail.go.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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