jmcd16
Registered
I am reading through my dive con manual and I found a point I need more clarification on.
It says that you should only dive deep and then get progressively shallower throughout a dive -- and never return to deeper water because the residual nitrogen in your system affects your means of off-gassing. It doesn't go into detail about why -- stating that it's too complex and "just think of it like a sponge."
The part that I can't wrap my head around is -- you've almost always got residual nitrogen when you're on a dive trip, right? I mean, that's the whole point of keeping track of multiple dives with designation groups or computers -- and it's the reason for the no fly rules. So how is a deep-shallow-deep profile in a single dive affected my off-gassing ability differently then getting back in the water in a few hours? There must be more to it?
Thanks,
Jen
It says that you should only dive deep and then get progressively shallower throughout a dive -- and never return to deeper water because the residual nitrogen in your system affects your means of off-gassing. It doesn't go into detail about why -- stating that it's too complex and "just think of it like a sponge."
The part that I can't wrap my head around is -- you've almost always got residual nitrogen when you're on a dive trip, right? I mean, that's the whole point of keeping track of multiple dives with designation groups or computers -- and it's the reason for the no fly rules. So how is a deep-shallow-deep profile in a single dive affected my off-gassing ability differently then getting back in the water in a few hours? There must be more to it?
Thanks,
Jen