What's the PO2 of AIR at 293' it's not 1.855 last time I checked (you are an instructor...right?
Me and not double checking quick math. Forgot the starting 1 atm. They were at 2.06... eek!
tell me how any trained deco procedures diver will attempt this dive with the configuration they had....
Ok, not being trained in deco procedures makes it difficult for me to say exactly...
But let's point out some things they did *right*: 1. towing a flag so the surface support could track them (and recover them if necessary); 2. having a backup / deco bottle slung and ready to go; stayed with buddy team.
From the video, we can tell that part of the narcosis was a warped view of time -- the first few attempts to show us the dive computer were too quick, but he likely figured he held that shot long enough. This is probably the same thing that had them checking in with each other so often.
We don't know that they weren't trained -- but we don't know that they were. Just because they don't do things in a generally accepted way doesn't mean they didn't make these decisions as "calculated risks" based on whatever knowledge they have.
Sherman: I posted before I had read your posts -- and I respect your view a lot. When the general public starts calling people idiots for doing things they don't know how to do, I question their perceptions. A lot of people I know would look at stuff that you do (general tec diving) and call you an idiot, simply because they don't understand the amount of planning, training and experience you'd put into it.
To me (and my flawed fuzzy-brained math), these guys looked like they were pushing the limits a bit, but had made sufficient considerations for the dive.
For those of you not familiar -- the Molokini Backwall has "bottoms" ranging from 250' to 400'+, depending on where you descend. Additionally, it's fair to say that these divers would have been *just about* (if not actually) within view of a person snorkeling on the surface. The water here is usually that clear.
What *really* amazed me about this dive is that the bottom composition was mostly rocks and not just lead and disintegrated nylon webbing.
By the way -- after looking at more of their videos (namely, the Carthaginian one) I think I've met one of these guys (Zoli), and he does have a European accent, IIRC. Also, to the best of my knowledge, he doesn't have any formal tec training.