carlthecat
Registered
Here is my problem. I am doing some dive planning and when I try to plan a dive to 150 feet for 25 minutes on air I get a bunch of different plans. For example, here is the dive plan for tables, V-Planner, and VR3 with different configurations.
IANTD / US Navy Air Decompression Tables (C-3302B)
20 feet 7 minutes
10 feet 20 minutes
IANTD / Bühlmann Air NDL & Deco w/Optional 75% Accelerated Deco (C3501)
40 feet 3 minutes
30 feet 4 minutes
20 feet 4 minutes
10 feet 22 minutes
V-Planner (safety = 0 or nominal) VPM-B or VPM-B/E
80 feet 40 seconds
70 feet 2 minutes
60 feet 2 minute
50 feet 3 minutes
40 feet 5 minutes
30 feet 7 minutes
20 feet 10 minutes
10 feet 19 minutes
V-Planner (safety = 1) VPM-B or VPM-B/E
80 feet 40 seconds
70 feet 2 minutes
60 feet 3 minute
50 feet 3 minutes
40 feet 5 minutes
30 feet 8 minutes
20 feet 11 minutes
10 feet 21 minutes
V-Planner (safety = 2) VPM-B or VPM-B/E
80 feet 40 seconds
70 feet 2 minutes
60 feet 3 minute
50 feet 4 minutes
40 feet 5 minutes
30 feet 8 minutes
20 feet 13 minutes
10 feet 22 minutes
VR-3 (with safety = 0)
95 feet 2 minutes
68 feet 2 minutes
40 feet 1 minute
30 feet 4 minutes
20 feet 10 minutes
10 feet 28 minutes
VR-3 (with safety = 1)
95 feet 2 minutes
67 feet 2 minutes
40 feet 1 minute
30 feet 6 minutes
20 feet 12 minutes
10 feet 32 minutes
VR-3 (with safety = 2)
100 feet 2 minutes
75 feet 2 minutes
50 feet 1 minute
40 feet 1 minute
30 feet 7 minutes
20 feet 15 minutes
10 feet 35 minutes
Obviously, I will follow my dive computer first, but what happens if my dive computer fails in the middle of a deco-plan? I may or may not remember what the deco schedule was. Sure I could write it down right before I start the deco, but I would like something easier. So, to get to the top without getting bent, I turn to the tables or a printout from V-Planner and it doesnt match the VR3 algorithm. So I will have to wing-it and do the best to add the necessary conservatism to get to the surface safe. If the computer fails before the deco-plan and I stayed within the bounds of the dive, then I can just follow the tables without problem. I know all these planners use different algorithms, but since they are all adjustable, how can I get something close to the VR3? Any ideas?
I just want stuff to match. I would love something to match the VR3. I dont want to buy the VR3 dive planning software because I am fond of V-Planner. I also dont want to upgrade the VR3 to the V1 Upgrade (VPM-B/E) model yet. Is there anyway to get some more agreeable deco plans without either of the 2 previous solutions?
Right now, I would follow the micro-bubble stops on the VR3 and then if there are problems with the computer I would follow the Bühlmann tables (second in the list).
Any help on getting these different planning tools to agree will be greatly appreciated.
Thanks to all who reply in kind.
Carl the Cat
IANTD / US Navy Air Decompression Tables (C-3302B)
20 feet 7 minutes
10 feet 20 minutes
IANTD / Bühlmann Air NDL & Deco w/Optional 75% Accelerated Deco (C3501)
40 feet 3 minutes
30 feet 4 minutes
20 feet 4 minutes
10 feet 22 minutes
V-Planner (safety = 0 or nominal) VPM-B or VPM-B/E
80 feet 40 seconds
70 feet 2 minutes
60 feet 2 minute
50 feet 3 minutes
40 feet 5 minutes
30 feet 7 minutes
20 feet 10 minutes
10 feet 19 minutes
V-Planner (safety = 1) VPM-B or VPM-B/E
80 feet 40 seconds
70 feet 2 minutes
60 feet 3 minute
50 feet 3 minutes
40 feet 5 minutes
30 feet 8 minutes
20 feet 11 minutes
10 feet 21 minutes
V-Planner (safety = 2) VPM-B or VPM-B/E
80 feet 40 seconds
70 feet 2 minutes
60 feet 3 minute
50 feet 4 minutes
40 feet 5 minutes
30 feet 8 minutes
20 feet 13 minutes
10 feet 22 minutes
VR-3 (with safety = 0)
95 feet 2 minutes
68 feet 2 minutes
40 feet 1 minute
30 feet 4 minutes
20 feet 10 minutes
10 feet 28 minutes
VR-3 (with safety = 1)
95 feet 2 minutes
67 feet 2 minutes
40 feet 1 minute
30 feet 6 minutes
20 feet 12 minutes
10 feet 32 minutes
VR-3 (with safety = 2)
100 feet 2 minutes
75 feet 2 minutes
50 feet 1 minute
40 feet 1 minute
30 feet 7 minutes
20 feet 15 minutes
10 feet 35 minutes
Obviously, I will follow my dive computer first, but what happens if my dive computer fails in the middle of a deco-plan? I may or may not remember what the deco schedule was. Sure I could write it down right before I start the deco, but I would like something easier. So, to get to the top without getting bent, I turn to the tables or a printout from V-Planner and it doesnt match the VR3 algorithm. So I will have to wing-it and do the best to add the necessary conservatism to get to the surface safe. If the computer fails before the deco-plan and I stayed within the bounds of the dive, then I can just follow the tables without problem. I know all these planners use different algorithms, but since they are all adjustable, how can I get something close to the VR3? Any ideas?
I just want stuff to match. I would love something to match the VR3. I dont want to buy the VR3 dive planning software because I am fond of V-Planner. I also dont want to upgrade the VR3 to the V1 Upgrade (VPM-B/E) model yet. Is there anyway to get some more agreeable deco plans without either of the 2 previous solutions?
Right now, I would follow the micro-bubble stops on the VR3 and then if there are problems with the computer I would follow the Bühlmann tables (second in the list).
Any help on getting these different planning tools to agree will be greatly appreciated.
Thanks to all who reply in kind.
Carl the Cat