18 replies to this topic

[Landlocked Dive Nut]

No way would they have had enough gas for proper deco.....which is why their non-bent selves should be very grateful to the dive gods!

[Capn Jack]

Little hard to tell what their profile looked like from this. It is POSSIBLE to be that deep and not incur a deco obligation. The low air is not surprising given the depth and their low experience level.

[techintime]

I use this same computer, an Oceanic Pro Plus II. This video gave me a great pre-dive season brushup on my computer displays by getting me back into manual to try to sort out how close these two came to dying. The video of the computer display was really hard to read. I had to go back through the video a bunch of times and do a lot of freeze framing, but here is some additional things I picked up.
- At the last shot of the computer, the pressure read 1690 psi and the depth read 140something feet with a fully maxed out N2 bar caution zone (next step would be decompression mode), and a Dive Time Remaining display reading 4 minutes which was likely controlled by time until entering deco.
- The video of the analog depth guage shows a max depth of one of the clueless divers of approximately 155 feet
- I love my Pro Plus, but one minor irritation of this computer is that it doesn't give you an ellapsed dive time on the basic screen. You have to push a button to get that number. But what is clear is that the two clueless divers were deeper than the rescuing diver and had been for most/all of this dive. And at the very end of the video, a shot of one of the analog depth guages shows a max depth of 155ish feet. Hence, while there is no way to run the numbers for a deco obligation based on what you see in the video, assuming they all splashed at the same time, these two divers likely had at least a minor deco obligation which they didn't fulfill.
- I think that this is real but did note one inconsistency. The only thing that makes me wonder if this might have been staged is that between the last two shots of the computer screen, the Dive Time Remaining number looks like it increased from 4 to 6 minutes. It's tough to read and video of an unlit LCD screen might not be accurate, but I can think of no reason for that number to increase while staying at the same depth, in fact going deeper to get the two divers. Great teaching video either way.

[peterbj7]

I don't know whether this was staged or not, but I find the scenario quite believable. I was on a dive in the Red Sea when two divers got caught in a down current (that everyone had been briefed about) that took them down to near 160ft before they were brought up by the dive master. She risked her life to do so as she was on EANx 32. By then of course they were badly narc'd, but when they started their descent they weren't narc'd, just totally negligent.