decompression without training

[muddiver]

Another point that has not come up yet is that most dive computers, that are not intended for decompression dives, will lock-out for the day once a decompression profile has been reached. Therfore you will be without a computer for the rest of the day, and if your out on a multi dive boat trip, that could really suck. :depressed:

 

[tgsmith]

Another point that has not come up yet is that most dive computers, that are not intended for decompression dives, will lock-out for the day once a decompression profile has been reached. Therfore you will be without a computer for the rest of the day, and if your out on a multi dive boat trip, that could really suck. :depressed:

Sparked another thought in my brain.......

Even if your computer won't lockout(My oceanic veo250 doesn't) from decompression, realize that the algorithm used in your Versa is not meant for decompression. It really doesn't even know how to compute it, and will basically be giving you guesses that are EXTREMELY conservative. Doesn't mean it's a bad computer.....I love my Veo250. But I put it into gauge mode for my decompression dives as it's simply not made for computing decompression. So, after a little experience, reading and practice you might think, "Hey, I feel comfortable enough to start moving into slight amounts of decompression. If I spend just a few extra minutes at 90 feet I think I can handle any reasonable situation that might arise and am comfortable since I'll only be getting a few minutes of deco(lets say between 3-5)."

Well, what you think should only be 3-5 minutes may very well end up being 15-20+ using an Oceanic computer....or really most computers aimed at recreational divers. It's about using the right tool for the job, and what you bought isn't suited for purposely computing decompression.

 

[Thalassamania]

Interesting, I had never seen this before until now, though to be honest I dont see anything about decompression diving. (no deco diving I do) Also technical agencies teach hypoxic mixes with trimix, it says breathing gas must not contain a lesser percentage of o2 than that of air. (EDIT I see that it says NITROX gas mixtures)

Hmmmm, interesting. No? My read is that an employer of recreational diving instructors or diving guides who do decompression diving, or dive anything but air or EAN within the ppO2 guidelines, must provide a decompression chamber for these divers as required under §§ 1910.423(b)(2) or (c)(3) or 1910.426(b)(1).

 

[FishOutUvH2O]

The great thing about diving is that you can do anything you want without training for it. . . Well, at least once anyway!!!

 

[muddiver]

Hmmmm, interesting. No? My read is that an employer of recreational diving instructors or diving guides who do decompression diving, or dive anything but air or EAN within the ppO2 guidelines, must provide a decompression chamber for these divers as required under §§ 1910.423(b)(2) or (c)(3) or 1910.426(b)(1).

Cool, think of the size of a standard six-pack or cattle boat if that went into effect. You wouldn't have any room for the paying customers on anything smaller than a 40 foot work boat.

 

[dumpsterDiver]

Another point that has not come up yet is that most dive computers, that are not intended for decompression dives, will lock-out for the day once a decompression profile has been reached. Therfore you will be without a computer for the rest of the day, and if your out on a multi dive boat trip, that could really suck. :depressed:

Really, which computers will do that? I've owned and used many dive computers, many of them older ones, and not one will ever lock you out after you do a decompression dive. I commonly do 4-5 dives a day and usually 2-3 are deco dives. ALL the compters I've used handle this perfectly (of course you do have to clear the required deco) but that should be pretty obvious.

Do you have experience with this happening?

 

[MXGratefulDiver]

Really, which computers will do that? I've owned and used many dive computers, many of them older ones, and not one will ever lock you out after you do a decompression dive. I commonly do 4-5 dives a day and usually 2-3 are deco dives. ALL the compters I've used handle this perfectly (of course you do have to clear the required deco) but that should be pretty obvious.

Do you have experience with this happening?

Most recreational dive computers will lock you out if you go into deco and don't honor the deco obligation before surfacing. The Oceanic Versa Pro I used to own would lock me out for 48 hours ... as would both Suunto computers I used to own (Favor and Vytec).

I currently use a Liquivision X1 which does not lock you out at all ... but the graphics get pretty interesting ...

... Bob (Grateful Diver)

 

[dumpsterDiver]

Most recreational dive computers will lock you out if you go into deco and don't honor the deco obligation before surfacing. The Oceanic Versa Pro I used to own would lock me out for 48 hours ... as would both Suunto computers I used to own (Favor and Vytec).

I currently use a Liquivision X1 which does not lock you out at all ... but the graphics get pretty interesting ...

... Bob (Grateful Diver)

Read again what muddiver and I wrote. i clearly stated that you gotta clear the deco or the computer will not be happy.

The reality of the situation is that modern computers can handle repeated deco dives easily. Probably too easily, you can easily follow the computer and do repetative dives that are probably too aggressive.

I just got a brand new oceanic computer and last week took it to 185 feet for maybe 12 minutes, got a few minutes deco, did 45 minute surface did another dive to 100 and put it into like 5 minutes of deco and then an hour later did another long dive between 60-80 and after 45 minutes still had no deco time left (on nitrox 37%).

 

[muddiver]

I am just referencing statements on other threads. I don't dive my Oceanic computers beyond the recreational limits and for anything closer to a decompression dive I now have a Chroran which will do decompression caculations using different mixes.

 

[Damselfish]

No matter how careful you are, everyone eventually makes mistakes. It's far better to know in advance how to get yourself out of a situation than have to figure it out once you're already in it ...

I have no idea if you were agreeing or disagreeing with me? I do know that I've never accidentally gone into deco and I really do think it's quite likely I'll dive my whole life and never make that particular mistake. (I agree one should know what to do in any event, and don't think I said otherwise.)