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After our last trip, I got a new toy to play with - we have Suunto Vyper computers and I ordered the cable and software to download our profiles. There were a couple of entries that shocked me to my core....
Both my fiance' and I dive pretty close to each other so our profiles should be "fairly" close (I know, not identical!). I noticed from our profiles that we both had "deco" marks on our some of our second dives, but never both of us together - it showed up on one of her second dives, then one showed up on another day's second dive on my profile. Now, I have our Vypers to audibly alert me/us whenever anything warrants attention. I do not remember anything other than a couple of "ascending too fast" alarms, my fiance' kind of has a problem with that. I would have thought that if we went into deco, we would be in SERIOUS trouble and we should not have went diving for a while - I can guarantee that neither of our Vypers gave any indication that we should not dive at any time. This is why I'm shocked. I also do not remember seeing my computer into a deco mode while diving and I check her Vyper with mine, this comes from our Nitrox class.... I like to know how much time is left at whatever depth I'm at, and kinda keep a mental note about the differences b/t air and nitrox dives. So, knowing that Vypers are notorious for being conservative, but also knowing that is the primary reason I bought this particular computer, what is going on? I've looked for alarms and both computers are set for audible alarms and I'd think this worthy of a big "ding ding" underwater.... I sent an email to Suunto but haven't gotten a reply as of yet.
Now, the Vyper will display this information slowly without downloading it and I've only looked at it briefly but never saw anything like this. Shouldn't diving be called off for some undefined period of time if you go into deco?!? This is one of the primary reasons I bought a computer, not to totally rely on it but to keep a running eye on me/us. Can someone explain what may be happening here, and what is this really telling us? I KNOW the next day we dove there was no indication that diving would be dangerous, etc....
Please enlighten a diver who keeps getting reminded that diving is a sport, but definitely a sport that needs constant reminders about the dangers involved.
D
Not sure fully what you have described but what can happen is that you indeed had enough loading that you had a manditory deco stop. However, you probably moved up to a shallower depth and spent some time there which allowed you to off gas enough that you no longer had a obligation. As such, you could surface normally with just a 3 min safety stop. What this says is that you were just past the limits and resolved it before surfacing.
However, from what you describe you did not notice that your computer switched into deco mode. So you may want to plan/watch your dive profiles a little more carefully. Also I would highly suggest that you read the manual so that you what the computer is trying to tell you if this happens again.
BTW just because you have a deco obligation does not mean you have to stay out of the water - if you do the stops properly you should be fine. If you violate them the computer will lock (goto into gauge mode) for 24 hours unless it gets wets. Again the manual will cover all of this.
Yes, I'm aware that they will lock you out for 24 hours... hence my post. I've read the manual and I believe you are right, except I'm looking at a profile now with one of the deco tabs on it - 2nd dive of the day, went to about 60 feet and gradually went shallower during the whole dive (the deco is upward on the graph in about 40ft) about 2/3 of the way thru the dive. I'm sure it was the initial depth of the second dive that marked the deco in the first place but the fact that it "went away" is a concept that this thread is about. As I said, this particular profile did progressively go shallower, and I was unaware that I could resolve the deco during a dive. I always do a safety stop but I would/should have seen something like this before I started my SS. At least, I thought I would have... I wish I could transfer the graph here so I could let it be seen, don't think it is that bad of a profile. Anyway, I will definitely watch it but it is good to know that a deco can be resolved - hope I don't see another one!
BTW, the manual for the Suunto Dive Manager software is almost laughable, it does not explain this which is why I hoped this post would clear things up.
I assume you had a yellow triangle alarm on your profile, where the computer was telling you there would be a decompression ceiling, not a red diamond where you violated a mandatory ceiling.
If so, Suunto will penalize you for fast accents to the point of making a short "deco" in addition to your safety stop. As SS pointed out, when you moved shallower, and at a slower rate, the penalty was paid for and no required deco ceiling was shown, (or bells and whistles didn't go off). You say your wife had several accents a bit too fast, and I suppose those showed up as blue diamonds on her profile.... possibly prior to the ceiling alarm symbol?
Sounds about right but no blue diamonds, just a yellow arrow looking thing. The only thing that is says at the bottom is "deco" in the Annotations column... no other information that I can find. That is why this is so weird, if it logs a violation it should tell me what it is about, and more importantly, what I need to do differently to not do this again.
As long as things are fine, I'm good but this was just scary when I first opened it up!
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