Thread: hi!
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Old 15th December 2007, 16:43   #7 (permalink)
Solitude Diver
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Re: hi!

Quote: (Originally Posted by daviddem) View Original Post
See? That's what I meant... with my stupid questions, nobody talks to me anymore already

No kidding, I searched the forum and I see that bailout is a hotly debated topic. Seems to me though that if you are being reasonably conservative... hell, you still need to carry a lot of gas... Granted, you don't have to re-blend it every week (hopefully!), but you still have to carry it around...
Hi David (and welcome).

As no one else has posted, I will give it a shot. (Although mind you I am just about as green as anyone as I do not have a lot of hours in yet).

Yes you do need to carry enough bail out to get you “home” but there are other things to consider.

1. As you are diving per PPO2 vs set O2, you get credit for the least amount of nitrogen as possible at any depth, so you reduce you deco obligation considerably. (Think ultimate nitrox mix which remixes for each depth). Therefore, you would have less required deco obligation and therefore less required gas in a bailout.

2. It seems some divers plan with the thought of splitting the bailout deco between them, and/or keep just enough bailout to get them to a stage area where there is enough “extra” to cover one them until they can get to a better stage. As they are all carrying back-up and it is not likely they will all need it, you don’t necessarily need to carry larger amounts of surplus for situations. I.e extra 1/3’s each. You can assume your buddy will give you a little if need be. (If he likes you).So depending on depth, you don’t need a huge amount carried with you.

3. The main thing is you do not carry large twins on your back with extra 1/3, and side mounts for each diver all carrying extra 1/3’s too, and have the longer obligations which require extra gas too.

4. And in an emergency (that does not involve a failed unit) you have much more gas to solve the emergency than you would on OC. Especially at depth. Think 3 hours at 200 feet vs 20 minutes.
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