Jul 05, 2006  I am looking for deco planning software. I use a DIR equipment config, and I would like to know if decoplanner 3.0 is the preferred choice among DIR divers, or do you use others (V-planner etc).

Click to expand.Ehm, cheers, but I specifically asked whether decoplanner was the choice for DIR divers or whether they also use other programs: 'I would like to know if decoplanner 3.0 is the preferred choice among DIR divers'. I also tried to make clear that I am not fixed on anything 'just because it is branded DIR' even if it is no good and wanted to know whether perhaps DIR divers prefer other software. But since Decoplanner is made by GUE, aimed at the DIR diver and is central to my question I am surprised you moved the thread. Thanks to all for your answers so far! I haven't taken GUE's tech classes so cannot say what they use to come up with DIR deco. I have read GI3's deco articles available at WKPP.org and use the information in those to fudge my deco profiles regardless of what software I use. Now I'm new to deco (only about 20 deco dives), so take this for what it's worth: I've used vplanner, an old version of decoplanner and ANDI's GAP diveplanner.

Of the three I prefer GAP because it a) it generates a nice graphs of the dive plan, b) it let's you choose whether to use RGBM or neo-haldanian (buhlmann) algorithm, and c) the latter algorithm let's you adjust the gradient factors all the way from 1 to 200, whereas my copy of decoplanner (buhlmann) only goes from 5 to 100. They have many other little features and differences that I haven't really needed so far. You can download a 14 day free trial version of GAP from ANDI's website. I will say that it took a few more minutes to learn than vplanner or decoplanner, but that's insignificant in the big picture. Click to expand.

DIR deco generally does not come directly from any dive planning software. It's my understanding that the WKPP guys use RGBM as the starting point for dives under 200 mins bottom time and VPM for dives over 200 mins (so essentially for the rest of us it's RGBM However, what the deco s/w spits out is (even for basic deco diving) only a starting point to generate a safer deco profile (adding in deep stops, O2 window etc.) The value in understanding DIR deco only comes from taking the class, and practicing soem of the required skills (good ascents, good buoyancy, good gas planning, good team skills etc).

The software is just something to generate some initial numbers from. Also, within certain very useful ranges of diving, deco s/w need not even be used -- there are sets of pretty simple rules that allow you to generate a flexible deco plan that can be changed on the fly as you need to. I have not used the dirrect output from any deco s/w for my deco planning, and we always plan it in our heads on the boat just before the dive. It's flexible enough to plan for +/- 5-10 mins +/- 10 feet lost deco gas without needing a Phd in math. DIR deco generally does not come directly from any dive planning software.

It's my understanding that the WKPP guys use RGBM as the starting point for dives under 200 mins bottom time and VPM for dives over 200 mins (so essentially for the rest of us it's RGBM However, what the deco s/w spits out is (even for basic deco diving) only a starting point to generate a safer deco profile (adding in deep stops, O2 window etc.) The value in understanding DIR deco only comes from taking the class, and practicing soem of the required skills (good ascents, good buoyancy, good gas planning, good team skills etc). The software is just something to generate some initial numbers from. Also, within certain very useful ranges of diving, deco s/w need not even be used -- there are sets of pretty simple rules that allow you to generate a flexible deco plan that can be changed on the fly as you need to. I have not used the dirrect output from any deco s/w for my deco planning, and we always plan it in our heads on the boat just before the dive. It's flexible enough to plan for +/- 5-10 mins +/- 10 feet lost deco gas without needing a Phd in math.

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