What is the deepest you can do an OOA?

[wedivebc]

The problem here is that many believe that those who have an OOA situation had it because they f-d up. I haven't had an OOA yet, and I've never had to breath the pony. Wether you folks believe it or not, sh_t happens no matter how good you are. Sometimes it even cascades and then you're dead. If you think you're so good that redundancy or CESA training is not for you then raise your hand. You're the cocky diver I run into sometimes.
Wakeup and stop preaching that those who have done a CESA have obviously f-d up.

Don't take up cave diving:shakehead

 

[mdb]

My nearest air will almost certainly, barring a complete disaster, be on my buddy's back.

TSandM; My experience would indicate otherwise. Being prepared to do a controlled free ascent seems to make very good sense. I've been diving with very experienced divers in great control who lose their buddy, go to someone who, in a real emergency,
slips into panic mode, despite drill after drill, etc. IMHO you have got to be prepared to help yourself.

 

[Soggy]

on the same dive that i mysteriously ran out of air?

hot dang .... i guess it's just my day to buy the fish farm

Not *just* on the same dive. Within less than 5 minutes of his heart attack, you have a burst disk go and a LP hose blow, while at the same time a hammerhead comes along and bangs you in the gut and knocks the wind out of you.

 

[Soggy]

Don't take up cave diving:shakehead

...or bring a pick-axe

 

[JeffG]

No, your buddy just had an MI(heart attack), inflated his BC, and is now zooming to the surface.

or better yet...The Enterprise came back from the future and beamed him aboard.

 

[all4scuba05]

What would you call a situation where you, for some reason, ended up without gas? I'd call it a f-up. That's why team awareness is such an important skill.

If an OOA situation will result in a CESA, you need to rethink your plan. Either train better within your team, or bring redundant gas. Treat the problem (no gas to breathe underwater), not the symptom (bolting to the surface). That isn't cockiness, it is thinking about the problem from a different angle.

So you believe that only divers that f-up end up in a CESA?
Are you really an expert on all possible OOA scenarios?
I dive with a pony on my deeper dives and that's even with a buddy. My wife doesn't dive. My vacation dives are with insta buddies. I just went on a 90' wreck dive. My regular buddy couldn't join me. I don't cancel dives because of that. If I did, I would only have like 12 dives to my name. I've dived with plenty of insta buddies even around here. Believe me, I learned not to rely on them too much. They tend to disappear sometimes. Bad vis, uncontrolled ascents, etc.
What makes me think that Joe Blow on the deep wreck dive is going to be there for me? Nothing makes me think that.
Someone on this thread doesn't believe pony is needed even if diving single tank solo at 100'. I guess you feel sh_t will never happen to you because you're always ready for anything. Well God Bless You.

 

[Tigerman]

Things are going so fubar on this dive I expect ill just cave in and say "ok god.. you hate me and youve won. Ill just hold on to this rock and watch my life rerun as I die" soon..

 

[all4scuba05]

I'm of the mentality that one of the scenarios to prepare for is ending up alone. For whatever reason, you end up alone. Where's your backup gas now. On you ex-buddies back. Oh wait I forgot, that would never happen to you. He who is self sufficient have some slight advantage over she/he who relies on others.
But then again, if I thought like some of you, I don't have to carry a spare light, whistle, strobe, SMB, knife, etc... Because my buddy already carries one.

 

[Soggy]

So you believe that only divers that f-up end up in a CESA?

Yes, *somewhere* there was a screw up.

Are you really an expert on all possible OOA scenarios?

It's not rocket science....

There are two ways to run out of gas...
1) you got stupid and just ran out...that should never happen to anyone

2) You had an equipment related problem, freeflow, burst disk, hose bursts, etc, which gives you at least a minute or two to handle the problem...during which time you either switch to your redundant gas or to your buddy's gas.

I just went on a 90' wreck dive. My regular buddy couldn't join me. I don't cancel dives because of that.

That is your choice, and I would recommend a set of doubles for you. You are solo diving.

Someone on this thread doesn't believe pony is needed even if diving single tank solo at 100'.

It certainly isn't me. If you are going to choose to solo dive, you need a redundant gas supply.

 

[Blackwood]

That expanding air needs to be vented off and you will have NO urge to breathe.

Trying to understand the physiology:

So the instant you start exhaling the urge to breathe goes away? I always assumed there was some finite level of CO2 that caused the urge, and you'd have to exhale past it to "unpull" the trigger.