donacheson
Contributor
Originally posted by voidware
donacheson, I don't mean to flame, but how could you say a dive like that is safe? In my head, that's ridiculous. I could see taking students on a guided deco (possibly), but --really-- deep air and then deco. That's incredibly dangerous.
Now I am not trained in any sort of deco, deep air, or mix, so my opinion is just that.
brandon
If by safe you mean there's a guarantee every diver will always return unthreatened and uninjured, then it's not safe. You appear to be talking about students; I'm not.
Dives deeper than 130 feet are done with great regularity all over the world without remarkable death or injury rates. Wreck diving in North and South Carolina, Truk , Vanuatu, and many other places daily take many divers to 180 feet and deeper. To boot, many of these are accomplished with a single Al80. Riskier than a pool dive? Sure. Do divers occasionally get bent? You bet. Suicidal? I think not.
IMHO, it's up to each diver to assess both his or her readiness to handle a dive and the risks associated with it. Like many experienced divers, I've seen certified divers who weren't prepared and would put themselves and everyone around them at great risk in jumping into four feet of water.
Incidentally, the dive operation WreckWriter was referring to has an interesting policy - they don't want to see C-cards, but they do require all divers new to them to take an "entrance exam". It consists of gearing up, jumping into 4 or 5 feet of water, kneeling, removing both mask and regulator, holding both out at arms' length, then putting both back and clearing them. Pass the exam and you can dive with them; fail it and you're offered free lessons. WreckWriter is in a better position than I to tell you what fraction of certified divers fail the exam the first time. I know some, even after instruction, never succeed.