One thing that fascinates me about diving is that the longer I do it, the more I learn about myself. I have, over the years, learned to slow my breathing to the point that I could almost always make a standard tank of air last for an hour under most circumstances. Earlier this week, I faced a challenge, in that some of the folks I was diving with were pushing for longer dive times, up to and sometimes exceeding an hour and a half.
And I utterly surprised myself by managing to do it, too. It was a stretch at times, and I came up with nearly empty tanks a couple of times, but darned if by the end of the trip, I'm not finding 80-90 minutes a very reachable goal nearly all the time. And a couple of times I got to find out what happens when my dive computer runs out of digits to count the dive time. It only uses two digits, so when we aimed for 100 minutes a couple of times, I was curious to see what it would do.
Turns out I can't dive more than 99 minutes on my computer. It just stops counting at 99 (or at least, stops displaying additional time. This seems bad, as it's really, really important to know how much time has elapsed. It was one of a couple of limitations I ran into this week with my old computer. I think I'm going to have to invest in a new one before we do another serious dive trip. Luckily, that gives me a little time to save my pennies.