On 18/03/2016 02:00, Miika Turkia wrote:
Well, it seems I get one minute longer dive if I dive within few minutes from a
previous dive to 38 meters. And planning for 20 minutes at 40 meters. Sounds
unbelievable short penalty from accummulated nitrogen, but indeed it looks like
previous dives are taken into account, to some extent.
miika
___________
Here are plans from VPlanner for similar dives.
Using EAN28: 2 dives to 40m for 20 min
Dive 1:
Depth Stop Run Mix pO2 EADDes 40 - 2 28 - - Lvl 40 18 20 28
1.36 35 Asc 15 - 22 28 - - Stp 15 0:13 23 28 0.67 12 Stp 12
2:00 25 28 0.58 9 Stp 9 4:00 29 28 0.50 6 Stp
6 5:00 34 28 0.42 4 Stp 3 10 44 28 0.33 1
Sfc - - 44 28 - -
Dive# 1, VPM-B +3
Elevation = 975 m
CNS = 13%
OTU's = 33
Gas 28 = 2887 ltr.
Surface interval: 20 min
Dive 2:
Depth Stop Run Mix pO2 EADDes 40 - 2 28
- - Lvl 40 18 20 28 1.36 35 Asc 18 - 22
28 - - Stp 18 0:33 23 28 0.75 14 Stp 15 2:00
25 28 0.67 12 Stp 12 3:00 28 28 0.58 9 Stp 9
4:00 32 28 0.50 6 Stp 6 9:00 41 28 0.42 4 Stp
3 23 64 28 0.33 1 Sfc - - 64 28 - -
Dive# 2, VPM-B +3
Elevation = 975 m
Surface interval 0d 0h 20m
CNS = 25%
OTU's = 34
Gas 28 = 3342 ltr.
Decozone start = 24 m
Using Subsurface *4.5.2.1083:*
Dive 1:
Subsurface dive plan based on VPM-B at +4 conservatism
depth
duration
runtime
gas
40m
2min
2min
EAN28
40m
18min
20min
15m
3min
23min
15m
1min
24min
12m
1min
25min
12m
2min
26min
9m
1min
27min
9m
3min
29min
6m
1min
30min
6m
6min
35min
3m
1min
36min
3m
10min
45min
0m
1min
46min
CNS: 15% OTU: 41
Gas consumption: 2942ℓ/123bar of EAN28 (748ℓ/31bar in planned ascent)
20 min surface interval
Dive2:
Subsurface dive plan based on VPM-B at +4 conservatism
depth
duration
runtime
gas
40m
2min
2min
EAN28
40m
18min
20min
15m
3min
23min
15m
1min
24min
12m
1min
25min
12m
3min
27min
9m
1min
28min
9m
4min
31min
6m
1min
32min
6m
8min
39min
3m
1min
40min
3m
20min
59min
0m
1min
60min
CNS: 15% OTU: 41
Gas consumption:
3266ℓ/136bar of EAN28 (1072ℓ/45bar in planned ascent)
Hope the formatting of above holds on your email system.
Reasonably similar??
Kind regards,
wf
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