App for deco levels

[flymolo]

i'm just curious what are people using these graphs for?

 

[Mobulai]

i'm just curious what are people using these graphs for?

I was trying to look into set point choices and how would that impact my deco obligations (also was kinda bored and just read a thread about ppo2 limit choices so thought I “experiment” with it)
I would guess also others might use it in choosing their GFs (more or less the same use case but generalized)

Such graph is how I learned about deep stop and why they are not a good deco schema [ from this ]

Probably I’m overthinking it

 

[Wibble]

I was trying to look into set point choices and how would that impact my deco obligations (also was kinda bored and just read a thread about ppo2 limit choices so thought I “experiment” with it)
I would guess also others might use it in choosing their GFs (more or less the same use case but generalized)

Probably I’m overthinking it

Just play with the settings in MultiDeco. The ins and outs of the Buhlmann algorithm doesn't matter as much as what the planners say.

One of the things to check out is the effects of changing the setpoint when on the deep phase of the dive. Also look at the CNS and POT. Then change the setpoints and recalculate it.

The most important thing is to look at the bailout options and how much time (=gas) is required. It's best to use a slightly different gas to force the differential between diluent and bailout. For example 10/60 dil with 11/60 bailout. Then adjust the amount of helium in the diluent...

You know, play with it and see what it shows up for some arbitrary dive!

 

[Mobulai]

Just play with the settings in MultiDeco.

I don’t have a lic for it so subsurface filled in as a substitute
I’m considering buying myself a key for MD, but haven’t been diving much lately
(Hence the overthinking/analyzing )

Also look at the CNS

You’re reading my mind (another recent thread got me thinking about that as well)

What is POT?

 

[Wibble]

POT = Pulmonary Oxygen Toxicity

 

[Mobulai]

POT = Pulmonary Oxygen Toxicity

Ah the toasty lungs thing! I’ll give it a look
Thanks

Edit: I might be confusing someone out there reading this in the future (or already), Im referring to this post Any reported cases of Ox Tox between 1.4 and 1.6?

 

[inquis]

Just play with the settings

+1. The bulk of learning to plan deco dives isn't understanding that tissue compartments fill up at different rates or have different ceilings. It's seeing the impact of bottom time/depth(s) & the various gas choices on runtime, switch depths, stop times/air breaks, gas volumes, END, density, CNS/POT, etc.

 

[Mobulai]

For sure it’s far from the bulk, best way to describe my interest is (taken out of context from a surfGF topic):

It is an academic point of only academic interest IMO.

In real world deco diving I agree with you; it is moot.

But every now and then I think about mild “symptoms” (nothing close to a hit, but some low level pains) on some previous dives in retrospect (read hypochondriac) and keep wondering what might be the best GF Hi/Lo choices are for me (nothing below 50 for GFLo is a reasonable start, and not gonna choose a GH Hi of 100, aint got time for that)

Beside trying out slight changes and seeing what feels/works better on future dives, it’s “Academic”
Gotta admit it now, I’m definitely overthinking it (read likes theory and needs to go diving more)

 

[Mobulai]

It's best to use a slightly different gas to force the differential between diluent and bailout. For example 10/60 dil with 11/60 bailout.

I think I asked you about this in a previous thread, and still can’t fully wrap my head around it (haven’t done any kinda Heliox/Trimix/hypoxic mix training yet); but how you phrased it now is kinda slowly turning on a light bulb in my head
Is that strategy aiming at creating a step in the plan when you bailout?
Like a forced depth change to keep you… how do I say that.. non-complacent? And keeping bailout gas plans in check

(i wanna avoid derailing the thread, but it did come up organically -in context of learning deco, apologies to OP)

 

[Wibble]

I think I asked you about this in a previous thread, and still can’t fully wrap my head around it (haven’t done any kinda Heliox/Trimix/hypoxic mix training yet); but how you phrased it now is kinda slowly turning on a light bulb in my head
Is that strategy aiming at creating a step in the plan when you bailout?
Like a forced depth change to keep you… how do I say that.. non-complacent? And keeping bailout gas plans in check

(i wanna avoid derailing the thread, but it did come up organically -in context of learning deco, apologies to OP)

I often — for planning — set a different gas with 1% more/less oxygen 1 metre above the bottom gas for zero minutes. This forces MultiDeco to switch from bottom gas to the new one. It then lists the gas volumes meaning you’ve got the total bottom gas separated from the ascent gas, vital for bailout planning