Is this a Dangerous Dive Profile?

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captain:
75 to 72 didn't get you bent, there had to be much more to it than that. If a 3 foot deviation at that depth could do it I dare say there would be waiting lines at the chambers.

Thats exactly what Im saying!! This makes absolutely no sense...there had to be somthing else that contributed to you getting bent....3 feet is not a big margin and couldnt have done this to you....if it did, I hope you have a great explanation because that is extremely ODD:confused:
 
Here's my opinion for what it's worth...

There is rarely one single thing that is the cause for a diver to get bent. Jarrett's dive profile (that specific one) is also not guaranteed (or even likely) to get a diver bent.

I don't think Debra's rise from 75 to 73 feet is what got her bent either. Too many people dismiss the external factors. I was guilty of that, and learned the hard way.

In my case, back in 2002 there were several contributing factors, all external (nothing to do with my profiles..my computer was studied and my dives were logged using tables for the seven previous days...no abnormalities found)...dehydration, not being well rested, cold and multiple dives over multiple days were the culprits determined in my case. I was diving/working alot (Christmas week), not getting enough fluids, tired from the long days, and cold.
 
Jarrett:
Thanks for all the input.

I was told this was a dangerous dive profile. I didn't think it was, but wanted to get some more feedback before coming to an opinion on it. Thanks.

My comments during my phone call to you were that this type of "jumping" up and down rapidly in the shallows is bad especially if you have been doing multi day/repetitive diving where you may have developed non symptomatic sub clinical dcs(often known as "silent micro bubbles"). A profile like this can easily agitate and aggravate these bubbles and lead to issues.

On your given profile THAT day, it shouldn't be a problem, but that type of profile with a higher nitrogen load CAN be a problem.

There is a reason in technical diving we teach that the shallows are critical for expert buoyancy control and very slow assent rates ( I teach from 10 feet up to ascend at 1fpm after the last deco stop)

Even in recreational diving it is a good habit to be more disciplined in buoyancy control and depth control in this phase of your die.
 
Dive Right In Scuba:
Thats exactly what Im saying!! This makes absolutely no sense...there had to be somthing else that contributed to you getting bent....3 feet is not a big margin and couldnt have done this to you....if it did, I hope you have a great explanation because that is extremely ODD:confused:

LOL! Oh my gosh you guys, don't get "bent" out of shape. Ok stop, breathe and read it slower..... The 3 feet depth change is not what got me bent. I said that already. It was a contributing factor. Jarret's profile is not dangerous if that is the only factor considered.
Everyone feel better? Ok one more breath in and now let it out......
 
Jarrett, I would just say that if this dive was dangerous there would be thousands of new divers dead and/or bent every year. Most people who are new to the sport have a really hard time staying within a 10 foot range. It might not be perfect, but not overly dangerous.
 
It’s a better profile than free diving it over the same time period.

That shallow profile is fine. You need to see some of our working dives. Like a cave dive that looks short and flat. :D

Gary D
 

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