K
KeithG
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troll?
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It'd be interesting to learn more about what she gets out of it. I'm not challenging it as a fool-hardy risk (which it would be for many people, including me); I don't know enough about the limits of risk mitigation in such a practice to know what's reasonable at that level.
What I'm talking about is, she's diving very deep. I'd think there'd be a lot less coral life & schools of fish down there. The lighting is probably black, white & blue looking, or maybe just black and blue. I take it she's not mainly diving wrecks, which are one of the big draws for deep divers.
troll?
Feasible but 0 reserves, especially if considering an extended bottom time for any reason, distraction, entaglement.
[...]If she has an s40 she barely has the gas to come out alive and not bent.
Resurrecting my own Deep Air/Dark Narc encounter to 80 meters on Oil Rig Eureka here in offshore SoCal 2014, in 12deg C water temp depth at the time. Used double AL80 11L manifolded cylinders, an AL80 11L tank of Oxygen for deco, a drysuit for exposure & redundant buoyancy, and a DPV Scooter.
Planned dive was a quick powered scooter descent to 90m for a few minutes, and then multi-level profile up with most of the time spent at 18m, with O2 deco at 6m as needed. Total Dive Time was 50min, with deco obligation cleared before 12m (per Petrel Computer on 30/85 GF), but I did a few minutes on O2 at 6m anyway for a cleaner inert N2 purge.
With the scooter off and stowed, all it took was three frog kicks into the current at 80m depth, and I was instantly overcome with a narcotic CO2 hit: Hyperventilation & difficulty breathing the regulator, high density & flow viscosity of the Air mix & resulting Hypercapnia came on immediately. In the dim ambient light, the only thing I was able to perceive was my Petrel Computer flashing an extreme PPO2 Warning prompt of 1.9, and it took a few minutes focused concentration not to panic, just to hang onto a support beam and try to regain a nominal breathing rate & clear head before starting the ascent using the scooter. (Note: Elevated CO2 also increases the likelihood of hyperoxic seizures.) Not at all pleasant and I don't want to do that again. . .
The point is that a Deep Air bounce dive in challenging conditions like above can be treacherous even if planned and prepared as a technical dive . . .It would be absolute suicide to attempt this recreationally only on a Single Tank!
"Wtf did I just do?"