You two guys can go off and play your silly games with extreme profiles. Count me out.Isn't this whole part of the thread about what the computers do when violating good diving practices?
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
You two guys can go off and play your silly games with extreme profiles. Count me out.Isn't this whole part of the thread about what the computers do when violating good diving practices?
How about providing a profile that does not immediately violate good diving practices? If you get DCS from that ascent (which is likely), then what is the purpose of talking about the later parts of the dive?
Yes it is.Isn't this whole part of the thread about what the computers do when violating good diving practices?
Yeah. I’m clear that many do that. I’m not a fan of the practice of using air settings while diving Nitrox, but I do get why some do. As long as you don’t exceed MOD, it provides a safety buffer. Though that buffer may be purely theoretical.
What I can’t wrap my head around is people who do that, then proceed to ignore the warnings/alerts on the computer.
It provides useful information as long as it can. It‘s not „throwing a tantrum“ afterwards.I got a computer to provide information throughout the dive. My computer should not throw a tantrum and give me the silent treatment while in the water. I'm not a fan of -dive lockouts either, but I understand that a little more.
If every other dive computer manufacturer behaved that way, then I'd agree with you.It provides useful information as long as it can. It‘s not „throwing a tantrum“ afterwards.
Sure. It's not really a big deal. Until it is.It’s really not a big deal, since we are in a rare emergency situation and probably unable to follow any recommendations anyway.
I know it can happen and has happened, but have any of you guys had or know of a O2 hit due to exceeding the MOD, once or repeatedly?
I have never heard of a DM recommending this. In fact, in my experience, it is quite the opposite. I have seen DMs absolutely anal about the MODs--sometimes absurdly so. A DM in Bali panicked if we took 32% below 60 feet. A DM in Cozumel would not let me use 32% on a dive planned to 80 feet because he was afraid I might momentarily lose buoyancy control and plummet below the 111 foot MOD.I encounter DMs and Instructors recommending to their students or clients to set an air profile in their computer despite being on 32% mix and this on dives where flirting with MOD is a real possibility if not for certain. Intentionally going beyond MOD briefly and knowingly doing so, well, but to dive numerous deeper dives pushing MOD over the course of a trip diving an air profile on the computer and 32% in the tank. I think it is bad advice.
Sure. It's not really a big deal. Until it is.
I think this is nonsense. I just played with MultiDeco a bit; 150 ft for 12 mins using 32%. You hit PPO2 of 1.77 for about 10 mins, get a slight deco obligation, CNS total 252%, and use less than 42 cuft (assuming RMV of 0.5 cuft/min). If you backed off to 140 ft but for 20 mins, you get more deco, only hit PPO2 of 1.67, CNS 111%, and still only used 63 cuft. Going the other way, to 160 ft on 32%, for 20 mins, you get 12 mins of deco, hit PPO2 of 1.97, CNS of 910%, and just barely can do it on an AL80.I recently ran into an older document (can't remember where) that expressed the opinion that you can't get toxed using a standard nitrox mix in an AL80 because you can't exceed MODs long enough to get a hit.
Whenever you've messed up and check your dive computer for ascent guidance and find out that it's checked out.And when would that be the case?