Deco Tables and Soft Ware?

[Uberlingcod]

Just wondering what everone is using to plan their dives? I am considering switching from Vplanner to the Gap because it allows the addition of deep stops which from what I understand reduces your time spent at 20 and 10 feet.

 

[Scuba_Steve]

V-planner does deep stops appropriately.

 

[loosebits]

Look Ma, deep stops:

V-Planner 3.71 by R. Hemingway, VPM code by Erik C. Baker.

Decompression model: VPM - B

DIVE PLAN
Surface interval = 5 day 0 hr 0 min.
Elevation = 0ft
Conservatism = + 2

Dec to 150ft (3) Air 50ft/min descent.
Level 150ft 27:00 (30) Air 1.16 ppO2, 150ft ead
Asc to 80ft (32) Air -30ft/min ascent.
Stop at 80ft 0:40 (33) Air 0.72 ppO2, 80ft ead
Stop at 70ft 1:00 (34) Nitrox 50 1.56 ppO2, 32ft ead
Stop at 60ft 2:00 (36) Nitrox 50 1.41 ppO2, 26ft ead
Stop at 50ft 3:00 (39) Nitrox 50 1.26 ppO2, 20ft ead
Stop at 40ft 3:00 (42) Nitrox 50 1.10 ppO2, 13ft ead
Stop at 30ft 6:00 (48) Nitrox 50 0.95 ppO2, 7ft ead
Stop at 20ft 5:00 (53) Oxygen 1.60 ppO2, 0ft ead
Stop at 10ft 9:00 (62) Oxygen 1.30 ppO2, 0ft ead
Surface (62) Oxygen -30ft/min ascent.

Off gassing starts at 110.1ft

OTU's this dive: 80
CNS Total: 36.2%

121.1 cu ft Air
20.5 cu ft Nitrox 50
11.8 cu ft Oxygen
153.3 cu ft TOTAL

 

[Scuba_Steve]

Imagine that

Not that I'd personally remember much from a dive like that up here

 

[DA Aquamaster]

I use DPlan as it is Palm based, portable, relatively inexpensive and easy to use.

With the default Gradient Factors of set at 30/85, a 150' dive for 30 minutes on air with 50% and 100% deco gasses gives a profile as follows:

80 ft stop - 1 minute on air
70 ft stop - 1 minute on 50%
60 ft stop - 1 minute on 50%
50 ft stop - 2 minutes on 50%
40 ft stop - 3 minutes on 50%
30 ft stop - 5 minutes on 50%
20 ft stop - 5 minutes on 100%
10 ft stop - 8 minutes on 100%

The conservativeness and shape of the curve is also user adjustable by modifying the gradient factors. For example with the Gradient Factors set at 20/75, a 150' dive for 30 minutes on air with 50% and 100% deco gasses gives a profile as follows:

80 ft stop - 2 minutes on air
70 ft stop - 1 minute on 50%
60 ft stop - 2 minutes on 50%
50 ft stop - 2 minutes on 50%
40 ft stop - 4 minutes on 50%
40 ft stop - 5 minutes on 50%
20 ft stop - 6 minutes on 100%
10 ft stop - 10 minutes on 100%

 

[SDAnderson]

I have V-Planner, GAP and Deco Planner installed. All three can be manipulated to produce pretty much identical results and pretty much whatever result you desire. Learning each of them takes some time but not nearly as long as learning enough about decompression theory to make sense out of any of them. I mostly use GAP to plan dives on because that's what I learned on years ago and I like the interface. Most of the divers I hang with use Deco Planner, so when it comes time to run tables so I usually print those along with the GAP tables. It gives us something to chat about during the ride.

GAP-Lite runs on Pocket PC's, which means I can leave the computer at home and take my cell instead for last minute changes. If you've got a handheld, the operating system it runs on maybe one of the most important factors in your decision.

 

[DA Aquamaster]

Palm VPM is also available and it is essentially a VPM-B model. I am a fan of Palm based software as you can pick up a suitable PDA on e-bay for less than $50 and not worry too much about it getting soaked, crushed, dropped over the side, etc. If it get's trashed you are only out about $50.

And realistically, you can keep it in a zip lock bag or a heavier duty commercial waterproof bag designed for electronics and still use all the functions so crushing it or having it fall over the side and float away unnoticed are the only 2 real hazards. It's also much more portable than a laptop.

 

[matt_unique]

Palm VPM is also available and it is essentially a VPM-B model. I am a fan of Palm based software as you can pick up a suitable PDA on e-bay for less than $50 and not worry too much about it getting soaked, crushed, dropped over the side, etc. If it get's trashed you are only out about $50.

And realistically, you can keep it in a zip lock bag or a heavier duty commercial waterproof bag designed for electronics and still use all the functions so crushing it or having it fall over the side and float away unnoticed are the only 2 real hazards. It's also much more portable than a laptop.

Been thinking about a palm solution too. I cut planned profiles in advance but if we make changes we fire up the latop. It would be nice to leave it at home though...

--Matt

 

[VinceDS]

Imagine that

Not that I'd personally remember much from a dive like that up here

Add a bit of HE to your bottom mix and you should have a pretty good memory

Decompression model: VPM - B

DIVE PLAN
Surface interval = 1 day 0 hr 0 min.
Elevation = 0ft
Conservatism = + 1

Dec to 150ft (3) Triox 21/35 50ft/min descent.
Level 150ft 27:00 (30) Triox 21/35 1.16 ppO2, 69ft ead, 86ft end
Asc to 80ft (32) Triox 21/35 -30ft/min ascent.
Stop at 80ft 0:40 (33) Triox 21/35 0.72 ppO2, 30ft ead, 40ft end
Stop at 70ft 6:00 (39) Nitrox 50 1.56 ppO2, 32ft ead
Stop at 60ft 1:00 (40) Nitrox 50 1.41 ppO2, 26ft ead
Stop at 50ft 1:00 (41) Nitrox 50 1.26 ppO2, 20ft ead
Stop at 40ft 1:00 (42) Nitrox 50 1.10 ppO2, 13ft ead
Stop at 30ft 2:00 (44) Nitrox 50 0.95 ppO2, 7ft ead
Stop at 20ft 13:00 (57) Oxygen 1.60 ppO2, 0ft ead
Surface (57) Oxygen -30ft/min ascent.

Off gassing starts at 109.2ft

OTU's this dive: 81
CNS Total: 50.9%

121.1 cu ft Triox 21/35
17.9 cu ft Nitrox 50
12.7 cu ft Oxygen
151.7 cu ft TOTAL

 

[Diver0001]

Just wondering what everone is using to plan their dives? I am considering switching from Vplanner to the Gap because it allows the addition of deep stops which from what I understand reduces your time spent at 20 and 10 feet.

You can get v-planner to give you deep stops with the proper parameters.

R..