Minimum Gas & Lost Deco Gas

[Lazlo]

but this isn't in 'that' forum

Mmmm, I had to check too...

My idea of minimum gas is enough to:

1) Leave 1/3 of all tanks unused - assuming no problems.
2) Have enough to cope with loss of any single tank.
3) Gas-share to the surface (possibly optional - depends).

[Leg Of Salmon]

But this is the internet, not reality

And where else can I try to eliminate all risk from diving ?

[Mal Bridgeman]

And where else can I try to eliminate all risk from diving ?

See post #2

[stillbubbling]

Launch the yellow blob so the boat knows to expect a problem. Switch to the get-out-of-jail-probably-not-very-bent plan (you are carrying one, right? Even if it's in your head), and share the deco and backgas - one does the stop, then the other IYSWIM. Extend the final stops as long as the gas lasts out.

On the surface get the bread out (you do have some in a pocket, yes?), and wait for the diesel budgerigar to come and feed.

Then sell your kit and take up golf.

[nickb]

What he said.....

....was wrong. There's just one bottle (the deco bottle) that's giving gas

[stevechesh]

Why is the deco gas unusable? If it's just a fucked reg both divers have two each on their backs that could be used - unlikely they're all knackered too.

i had to do this a few years ago and it works fine. The only reasons for losing a deco gas i can see are 1. Losing the complete bottle.
2. The valve is completely knackered and won't open.
3. A tainted/bad fill.
If the gas was that low i'd forget my deep/intermediate stops and get to 9 metres and go from there.

[nickb]

....and share the deco and backgas.....

THERE'S NO BACKGAS!!

[stevechesh]

THERE'S NO BACKGAS!!

OR YELLOW BLOBS AND DROP BOTTLES

[Leg Of Salmon]

the intermediate stops where the most important ones when you are using helium*.

Swopping the regs over is a good idea, didn't think of that.

The reason I ask is a course I have looked at recently covers drop bottles. I have no experience of these and thought that if I was going to need one I would just take the gas with me on the dive. I am just interested in what other people think.

I have also thought that instead of one AL80 of 50% you could take 2 AL40s of 50 and O2 and increase your redundancy. You then introduce the risk of switching to the wrong deco gas. But quite frankly...





*I know I didn't point that out but you might have guessed!

[nickb]

OR YELLOW BLOBS AND DROP BOTTLES

Quite - it's a total disaster. I ain't going on any of Leg's trips

Good game though