cornfed
Mindless lemming
Genesis once bubbled...
As I noted earlier in the thread
Sorry, I saw you and Jamei go at each other again and skipped to the end of the thread. Looked like it was the same argument, just in a different thread.
Drew
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Genesis once bubbled...
As I noted earlier in the thread
In using a dive table, you must figure the max depth of the dive for the entire duration of the dive even if you didn't stay at that max depth for the entire dive. That eats up the CNS clock quite fast. A dive to 100' that only averages 50' will have to be figured as if you stayed at 100' feet the entire duration of the dive and thus eat up twice as much CNS clock time.
Once again, you're wrong. There is no mandatory deco stop on the second dive, as you can see, beyond the 1:36 minute stop at 15 feet (which we would call a "safety stop" in the recreational world.) The total CNS exposure for BOTH dives is 13.3%. Both the Vyper and Cobra would have generated roughly-the-same deco profiles (if you dive stops the way I do anyway), but both would have toxed me horribly on the first dive and probably still been toxed out when I went in the water for the second.V-Planner 3.20 by R. Hemingway, VPM code by Erik C. Baker.
Decompression model: VPM-B
DIVE PLAN #1
Surface interval = 2 day 0 hr 0 min.
Altitude = 0ft
Conservatism = + 2
Dec to 140ft (2) on Nitrox 28.0, 50ft/min descent.
Level 140ft 12:12 (15) on Nitrox 28.0, 1.47 ppO2, 125ft EAD
Asc to 40ft (18) on Nitrox 28.0, -30ft/min ascent.
Stop at 40ft 0:40 (19) on Nitrox 28.0, 0.62 ppO2, 34ft EAD
Stop at 30ft 2:00 (21) on Nitrox 28.0, 0.53 ppO2, 24ft EAD
Stop at 20ft 1:00 (22) on Nitrox 28.0, 0.45 ppO2, 15ft EAD
Stop at 15ft 7:00 (29) on Nitrox 28.0, 0.41 ppO2, 11ft EAD
Asc to sfc. (29) on Nitrox 28.0, -30ft/min ascent.
Off gassing starts at 77.6 ft
OTU's this dive: 28
CNS Total: 11.7%
70.3 cu ft Nitrox 28.0
70.3 cu ft TOTAL
DIVE PLAN #2
Surface interval = 0 day 2 hr 55 min.
Altitude = 0ft
Conservatism = + 2
Dec to 87ft (1) on Nitrox 30.0, 50ft/min descent.
Level 87ft 23:16 (25) on Nitrox 30.0, 1.09 ppO2, 73ft EAD
Asc to 20ft (27) on Nitrox 30.0, -30ft/min ascent.
Asc to 15ft (27) on Nitrox 30.0, -30ft/min ascent.
Stop at 15ft 1:36 (29) on Nitrox 30.0, 0.44 ppO2, 10ft EAD
Asc to sfc. (29) on Nitrox 30.0, -30ft/min ascent.
Off gassing starts at 50.5 ft
OTU's this dive: 29
CNS Total: 13.3%
68.2 cu ft Nitrox 30.0
68.2 cu ft TOTAL
DIVE PLAN COMPLETE