Whelp, this will be my first post... been lurking for a while and trying to decide when to jump in, here's the good stuff (two incidents in the same dive):
My first OW dive, after a 6 year break and a SCUBA refresher class, was about 35 minutes in total. I'm breathing a **** rental reg, with a really high cracking pressure. Visibility that day was ~20 feet, 15 minutes into the dive, my buddy and I swim off of a shelf over one of the deeper spots in the quarry and, checking my depth meter (38 ft, deepest I've ever been), I realize I can't see the bottom. At the same time, I hit the thermocline, dropping the temp from near 90* to about 70*. So, hard breathing reg, no visible reference, and I feel like someone poured ice water on me: Vertigo hits really bad, my breathing spikes and a panic circle starts, "How deep am I?" Where the hell am I?" "What if I can't get enough air?"
My instinct was to shoot to the surface, but, I can't leave my buddy (about 10 feet ahead of me) and I still have a 15 foot safety stop even if I bolt. The only thing that I could think to do was trust my instruments, I was sure they didn't panic along with me. Depth gauge, SPG (stay level, slow steady breaths), depth gauge, SPG (stay level, slow steady breaths). The panic lasted, maybe, 30 seconds, I calmed down and continued the dive (with a lot less air in the tank).
Ten minutes on, my buddy signals to surface, get our bearings and continue with the dive, I agree, as we've been swimming in no particular pattern (following the guide lines laid down by the quarry staff). He starts to ascend. I start to ascend and my computer starts beeping at me to slow down... and I (again) panic as I shoot from 35 feet to 17 feet, dump my air from my BC, plummet back down to 30 feet, kick wildly, inflate my BC, and yo-yo back to 25 feet, my buoyancy now "under control" (during this carnival ride, I tell myself: "Don't hold your breath, don't hold your breath") . I see my buddy looking at me (and I'm sure wondering "What The Hell?"), descending and flashing "All OK?" I return the "OK" and we continue the dive for another 10 minutes, this time when I ascend to the surface I'm more careful of my buoyancy "control", do my safety stop, then finish the dive.
Lessons I learned (in no particular order):
1. Get your own gear as soon as you can. I was really lucky to get certified on new, top-of-the-line stuff. It really spoiled me, if I had been certified on the type of regs I rented that day, I wouldn't have ever gone diving again once I got my OW cert. I bought my own octopus two weeks after that dive.
2. Remember your training, fight your (panicking) instinct. If I had shot from 40 ft to the surface, it would have probably been "OK", but my buddy would have been alone, and what would it have solved?
3. PROPER BUOYANCY CONTROL!! (the extra exclamation point is for effect) since that dive I've dialed my weight to a "proper" amount. I was 8 pounds over for that dive.
4. Practice, Practice, Practice. I treat EVERY now as a learning dive, yes I have fun, but also view it with as critical an eye as I can.
5. Plan the dive. This was our first dive in the quarry and neither of us had any idea of max depth or features. We just went with a "let's see what's out there" attitude. Since he was the more experienced diver, I let him set the course and happily followed.
6. Log your dives. Record the good and the bad, it helps in not building a super ego
"That idiot, oh,yeah... I did that too."
7. Slow and Steady. Don't push yourself, get with a group that you feel comfortable telling them if something's "off" for you before or during the dive. Ask questions, and don't be afraid to say "Nope, not doing that."
At the time I didn't think that either of these incidents were "worthy" of calling the dive, as my lack of control passed without any repercussions, other than a bloody nose post dive (sinus block). I now realize now, I'm telling a "you are so lucky" story that could very well have ended in the
Accidents and Incidents sub.
Thanks all.