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May be of interest to some people..
Despite getting Nitrox-certified some time ago, I've only just gotten around to getting myself some deco planning software. (Largely because I got a Palm for Xmas)
So I've just been having a play around with DecoWeenie to get to know how it works.
I wanted to see what kind of difference accelerated deco would have on deco times. So I ran through the same dive (30 meters for 40 minutes) with the following gases:
1 - Air
2 - Air + 80% Nitrox (Yay BSAC)
3 - Air + Pure Oxygen
4 - Air + 50% + 100%
5 - Air + 50% + 80%
6 - Nitrox 36%
7 - Nitrox 36 + 50% +100%
And the resulting deco times with the default Gradient Factor settings were:
1: 1min @ 15, 1min @ 12, 5min @ 9 and 35min @6: Total stop time = 42mins
2: 1min @ 15, 1min @ 12, 2min @ 9 and 12min @6: Total stop time = 16mins
3: 1min @ 15, 1min @ 12, 5min @ 9 and 10min @6: Total stop time = 17mins
4: 1min @ 15, 1min @ 12, 2min @ 9 and 10min @6: Total stop time = 14mins
5: 1min @ 15, 1min @ 12, 2min @ 9 and 10min @6: Total stop time = 14mins
6: 0min @ 15, 0min @ 12, 1min @ 9 and 7mins @6: Total stop time = 8mins
7: 0min @ 15, 0min @ 12, 1min @ 9 and 3mins @6: Total stop time = 4mins
So if you were ever in any doubt about how much diving has progressed with this newfangled approach to decompression, there's your answer:
Just using air, more deco time than down time.
Just using Nitrox, less than ten minutes hanging.
Using full-on accelerated deco, your total deco time is barely longer than your safety stop on a no-deco dive!
May be of interest to some people..
Despite getting Nitrox-certified some time ago, I've only just gotten around to getting myself some deco planning software. (Largely because I got a Palm for Xmas)
So I've just been having a play around with DecoWeenie to get to know how it works.
I wanted to see what kind of difference accelerated deco would have on deco times. So I ran through the same dive (30 meters for 40 minutes) with the following gases:
1 - Air
2 - Air + 80% Nitrox (Yay BSAC)
3 - Air + Pure Oxygen
4 - Air + 50% + 100%
5 - Air + 50% + 80%
6 - Nitrox 36%
7 - Nitrox 36 + 50% +100%
And the resulting deco times with the default Gradient Factor settings were:
1: 1min @ 15, 1min @ 12, 5min @ 9 and 35min @6: Total stop time = 42mins
2: 1min @ 15, 1min @ 12, 2min @ 9 and 12min @6: Total stop time = 16mins
3: 1min @ 15, 1min @ 12, 5min @ 9 and 10min @6: Total stop time = 17mins
4: 1min @ 15, 1min @ 12, 2min @ 9 and 10min @6: Total stop time = 14mins
5: 1min @ 15, 1min @ 12, 2min @ 9 and 10min @6: Total stop time = 14mins
6: 0min @ 15, 0min @ 12, 1min @ 9 and 7mins @6: Total stop time = 8mins
7: 0min @ 15, 0min @ 12, 1min @ 9 and 3mins @6: Total stop time = 4mins
So if you were ever in any doubt about how much diving has progressed with this newfangled approach to decompression, there's your answer:
Just using air, more deco time than down time.
Just using Nitrox, less than ten minutes hanging.
Using full-on accelerated deco, your total deco time is barely longer than your safety stop on a no-deco dive!