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- # of dives
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766 dives, 390 hours. So I average about 35 minutes per dive, as my shore dives are usually short and shallow and I fit in two a day on one tank. In winter my dives average one every 2 weeks of maybe 20 minutes (diving wet in 40F water or less is cold). So that brings down my average per dive as well. I like to figure it out as to how many weeks/days I've been underwater.How useful is the "total bottom time to date" tally? Does anyone do that?
I just count total time submerged as my bottom time, though that's not the real way to do it. Not sure how I'd figure it out the other way as with my shore dives, who knows exactly when I started to "ascend". None of that matters anyway. Of course for the rare boat dive and NDL ("no stop" now) limits, I keep track of when I start my ascent.