PADI tables finally going away?

[Splitlip]

If the PDC fails on the dive, you end the dive just as you would for any other critical equipment failure. For a PDC that dies before the dive, rent a replacement or ask someone to help you with tables and rent a bottom timer and depth gage.

He would end the dive and anymore diving for what, 24 hours?


Whom would he ask for help with tables? Bubba? And what would he ask as he has no training as to their use.

No. He would have to stay within the limits of his training. If a clean computer that he can operate can't be found or if he has any residual nitrogen (assuming he knows what that even means), he is sitting it out for 24.

 

[boulderjohn]

My UWATEC PDC doesn't reset to air after a predetermined amount of time. I once did a dive on Nitrox 36 setting while diving on air. (Didn't go into deco but creeped me out anyway.) That was a real wake-up call for me. I checked repetitive NDL's from tables from then on. Not at all hard to do. That simple procedure catches a lot of oversights. -the lower spinal cord is usually the first to go. I'd rather keep that...

If you did as my buddy did 3 weeks ago, (he was diving 36 on the first dive but his computer was set to 21). It put him in deco and locked him out. He probably should have called DAN and admitted himself to the ER for a chamber ride. Instead, he finished the dive and the day using tables.

I'm a bit confused here.

How can doing a dive in EANx 36 while your computer is set on air put you into deco? If you are following the computer's guidelines, you should end up with a far safer profile than normal, not a dangerous one.

Or did you mean the dive was planned on EAN tables but accidentally dived it with the computer set on air? In that case, the computer can indeed think you went into deco, and if you didn't do the required stops, it would indeed lock you out. However, you would not really be in deco. You should be just fine. Why would you call DAN and go to the chamber if you are fine but your computer thinks you aren't? The chamber operator could put the computer in there and give it a ride, but that wouldn't do a lot of good.

The danger is going the other way, diving air while your computer thinks you are on nitrox. Then your computer will give you longer bottom times than you should have, and in that case you really can get bent instead of the computer.

 

[Splitlip]

His computer thought he was in DECO. Locked him out. No danger but for losing the money he spent for the boat ride.

As I said, it goes both ways.

But no worries. He is old like me. LOL He switched to tables, and while my (2) computers gave me lots of RBT, I just followed his lead.

 

[Peter Guy]

My UWATEC PDC doesn't reset to air after a predetermined amount of time. I once did a dive on Nitrox 36 setting while diving on air. (Didn't go into deco but creeped me out anyway.) That was a real wake-up call for me. I checked repetitive NDL's from tables from then on. Not at all hard to do. That simple procedure catches a lot of oversights. -the lower spinal cord is usually the first to go. I'd rather keep that...

The problem here, as far as I can tell, is that you (and most others) don't know what it means to "go into deco" which is why I highlighted your post. IF you remember that ALL dives are "deco dives" (that is, every time you dive you must "decompress" -- i.e., the "excess" N2 must come out of your body) then you just do what you need to do to "decompress."
I don't plan my dive using "tables" nor do I "plan" my dive by following the screen on my diving computer (which, by the way, I have three on a normal dive). I just plan on doing some decompression stops on the way up based on the dive I've done.

Have I "gone into deco?" Of course -- I went diving. Did I plan my dive so that the excess N2 would come out of my tissues before I reached the surface? Yup, that too.

Yes, it really is that simple.

 

[Splitlip]

I'm a bit confused here.

How can doing a dive in EANx 36 while your computer is set on air put you into deco? If you are following the computer's guidelines, you should end up with a far safer profile than normal, not a dangerous one.

Or did you mean the dive was planned on EAN tables but accidentally dived it with the computer set on air? YESIn that case, the computer can indeed think you went into deco, and if you didn't do the required stops, it would indeed lock you out. However, you would not really be in deco. You should be just fine.How would he know that, if he is only trained to rely on his computer. Why would you call DAN and go to the chamber if you are fine but your computer thinks you aren't? The chamber operator could put the computer in there and give it a ride, but that wouldn't do a lot of good. Tongue was in my cheek.

The danger is going the other way, diving air while your computer thinks you are on nitrox. Then your computer will give you longer bottom times than you should have, and in that case you really can get bent instead of the computer. I know that, LOL

. .

 

[Splitlip]

The problem here, as far as I can tell, is that you (and most others) don't know what it means to "go into deco" which is why I highlighted your post. IF you remember that ALL dives are "deco dives" (that is, every time you dive you must "decompress" -- i.e., the "excess" N2 must come out of your body) then you just do what you need to do to "decompress."
I don't plan my dive using "tables" nor do I "plan" my dive by following the screen on my diving computer (which, by the way, I have three on a normal dive). I just plan on doing some decompression stops on the way up based on the dive I've done.

Have I "gone into deco?" Of course -- I went diving. Did I plan my dive so that the excess N2 would come out of my tissues before I reached the surface? Yup, that too.

Yes, it really is that simple.

We're playing with semantics here. "going into deco" we all infer is when an obligation is incurred either by the computer or by tables.

 

[lowviz]

...........I don't plan my dive using "tables" nor do I "plan" my dive by following the screen on my diving computer (which, by the way, I have three on a normal dive). I just plan on doing some decompression stops on the way up based on the dive I've done.
.............Yes, it really is that simple.

-figured that's where you were heading, that's why I bit.

Your post demonstrates a fundamental lack of gas planning. A recreational diver should always have a reasonable guess as to what entering deco will cost them in gas load. The U.S. Navy 10 min omitted stop will forgive many sins, easy to compute the gas required for it...

 

[lowviz]

I'm a bit confused here.
..........The danger is going the other way, diving air while your computer thinks you are on nitrox. Then your computer will give you longer bottom times than you should have, and in that case you really can get bent instead of the computer.

Exactly what happened, I could have worded it better.

 

[John_B]

The problem here, as far as I can tell, is that you (and most others) don't know what it means to "go into deco" which is why I highlighted your post. IF you remember that ALL dives are "deco dives" (that is, every time you dive you must "decompress" -- i.e., the "excess" N2 must come out of your body) then you just do what you need to do to "decompress."
I don't plan my dive using "tables" nor do I "plan" my dive by following the screen on my diving computer (which, by the way, I have three on a normal dive). I just plan on doing some decompression stops on the way up based on the dive I've done.

Have I "gone into deco?" Of course -- I went diving. Did I plan my dive so that the excess N2 would come out of my tissues before I reached the surface? Yup, that too.

Yes, it really is that simple.

The guy doing the shark dive who's dive computer showed him owning 20 minutes of deco qualifies as "going into deco", at least in my book. Especially when he doesn't have enough air in his tank to do the hang time and has to have a DM "rescue" him.

Don't split hairs, there are people who just plain f*** up due to their complete lack of planning. They are a hazard to themselves and to others, and I wish instructors would stop churning them out under the excuse that new divers just aren't smart enough to learn tables.

 

[Splitlip]

The guy doing the shark dive who's dive computer showed him owning 20 minutes of deco qualifies as "going into deco", at least in my book. Especially when he doesn't have enough air in his tank to do the hang time and has to have a DM "rescue" him.

Don't split hairs, there are people who just plain f*** up due to their complete lack of planning. They are a hazard to themselves and to others, and I wish instructors would stop churning them out under the excuse that new divers just aren't smart enough to learn tables.

Tim bites his tongue rather than sounding like his dear old Dad.