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| Originally Posted by NotDeadYet Because you're wrong, just accept it  |
Its like my marriage. If something goes wrong i know its my fault i just can't always figure out how or why
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Do an hour or two's swim SCR and see how you feel at the end of it. I'd rather go OC, it's absolutely exhausting, it takes a lot of focus, it screws your buoyancy up...
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Get a BOV is far less exhausting SCR. But your right when i did SCR for over an hour I got a very sore nose and a head ache.
Id plan OC but if I hit a problem Id go SCR till i was sure my OC was enough to get me out. I wouldn't bother unless it was necessary. i was just trying to point out to the non CCR diving critics on this thread that the CCR does offer more options even when its broken
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So on OC you will be stressed and your SAC is through the roof. Why isn't the same going to be happening on SCR? So you're stressed, you're breathing hard, you're sucking on an ADV that feels like giving someone a blowjob down a mile of garden hose every 4 breaths all whilst swimming, all whilst trying to find your way home, all whilst your buddy is swimming along happily thinking "what a cock, why doesn't he just bail out?"...
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I did do the SAC calks on 20 which is pretty stressed breathing for me. My normal sac is around 12.
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I've had a RB failure 2hrs from air and I nearly inhaled my drysuit through my arse. I didn't give a flying f**k what I was breathing as long as I could breathe it. Psychologically, once I was on OC there was no way I could have come off it to go back on SCR. And psychologically there was no way I was about to go through some mental checklist about how to stay on the loop. I needed to breathe something, I needed it NOW and once I'd got it you'd have to pry it off me to get me to take that 2nd stage out of my gob and put a DSV in.
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I have no idea how i would react till i am actually in the cart but I am confident id go scr if i had to.
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Not really, that's what OC is for  And in my very limited experience of swallowing lime I'd be very unlikely to stay on the loop where I don't always have control of my position -- you point where the cave points you.
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If you have the right CCR it shouldn't get that bad in the first place
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Erm... weren't you diving a KISS? Not exactly flood resistant/recoverable.
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Yep, I believe I was on the wrong re breather. Copis Meg with HUD would be my first choice.
I am already looking into modification of the KISS to stop it happening again.
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OK, what about a CO2 hit underground? OC still of limited significance?
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Never had a co2 hit, but bailout early and or go SCR would be the obvious reaction. Co2 can be retained C02 or a unit failure. If its retained then bailout isnt going to help that much. If its a unit failure then once breathing is back under control you may find you have used stupid amounts of your Oc gas and you have no choice but to go SCR.
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Well, you did the course so why did you need to re-learn it?
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Don't quite follow this? We didn't re learn SAC or gas planning on the cave course. We were expected to know it. It would be rather odd for a gas diver to not know how to plan bailout? Two hours out of the cave or two hours deco, the planning is the same.
ATB
Mark