First dive of the day is always the deeper dive in Cozumel and we would do that on air, then switch to ean32 for the 2nd and 3rd dives.
I cannot wrap my head around this one.
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First dive of the day is always the deeper dive in Cozumel and we would do that on air, then switch to ean32 for the 2nd and 3rd dives.
A lot of the first dives would be on a wall with no bottom. This was the logic as explained by my instructor at the time who suggested doing it this way.
Actually went below 100' several times on those dives, but never would have exceeded the mod for the 32%.
The others, 2nd and 3rd dives, rarely were deeper than 70-80' and usually in the 40-60' range.
At that time in our diving, we (me) were running out of capacity not ndl.
I think he was (rightfully) concerned with her bouyancy
I'm guessing you are not an instructor? There is a difference between someone having buoyancy problems versus someone having problems AND potential oxygen toxicity problems. Risk mitigation.If your instructor was concerned with her buoyancy, it baffles the mind as to why he'd put her over an essentially bottomless wall.
I'm guessing you are not an instructor? There is a difference between someone having buoyancy problems versus someone having problems AND potential oxygen toxicity problems. Risk mitigation.
You are absolutely correct about the optimal nitrogen management being Nitrox on the first dive, and perhaps not on the later one. But there is more to the equation that just nitrogen management....in this case, oxygen management!Thanks, had to think about what you wrote but I get it now. And no, not an instructor, just a regular diver here.