Done that on every tec dive that I had done.
No one died from having too much gas. Period.
Tec Dive computers and dive plans
- Thread starter MaxTorque
- Start date
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No one died from having too much gas. Period.
OP
MaxTorque
Contributor
That's interesting that you basically develop some "average but safe" plans for a range of dives and just use the most suitable one.
Given that i suspect our gear doesnt' change that much, ie we have a set of doubles with x litres of gas, and a stage/deco or two each with y litres of gas, it makes sense to have a pre-planned, er, plan for certain depths, and apply the one that best fits the dive you think you are about to do
This makes it even easier, because you use the pc software to pre-plan a range of dives based on gas planning (fixed by the gear choice) and depth (shallower longer, deeper shorter (not inc deco time)) and the pc software generates the plans for those dives each with a unique ID, which has two formats
1) a printable output, that has the basic profile, and the gas requirements used in the plan (ie 24l doubles with Nitrox30 etc). This is then used to help you set up for the dive
2) a downloadable plan that is programmed into your dive computer
On the boat you kit up, use the paper copy (laminated for waterproofness!) as a checklist to ensure you are set to go, and you then select the same plan on the DiveComp.
Start your dive, and the DiveComp then will prompt and guide you in real time with the planned plan setpoints
to me, this sounds both quite useful,pretty simple, and a significant safety improvement? But i can also see why a lot of people would consider it an un-necessary phaff lol!
Given that i suspect our gear doesnt' change that much, ie we have a set of doubles with x litres of gas, and a stage/deco or two each with y litres of gas, it makes sense to have a pre-planned, er, plan for certain depths, and apply the one that best fits the dive you think you are about to do
This makes it even easier, because you use the pc software to pre-plan a range of dives based on gas planning (fixed by the gear choice) and depth (shallower longer, deeper shorter (not inc deco time)) and the pc software generates the plans for those dives each with a unique ID, which has two formats
1) a printable output, that has the basic profile, and the gas requirements used in the plan (ie 24l doubles with Nitrox30 etc). This is then used to help you set up for the dive
2) a downloadable plan that is programmed into your dive computer
On the boat you kit up, use the paper copy (laminated for waterproofness!) as a checklist to ensure you are set to go, and you then select the same plan on the DiveComp.
Start your dive, and the DiveComp then will prompt and guide you in real time with the planned plan setpoints
to me, this sounds both quite useful,pretty simple, and a significant safety improvement? But i can also see why a lot of people would consider it an un-necessary phaff lol!
napDiver
Contributor
I'm confused, If you want to build a tec diving application. Why don't you go do some or a lot of proper tec diving first?
I'm not sure how a target on a computer would work and help... But a notes/plan view would be helpful for a quick scan. Still need wetnotes or slate just in case.
I'm not sure how a target on a computer would work and help... But a notes/plan view would be helpful for a quick scan. Still need wetnotes or slate just in case.
OR you could just look at your ascent rate; if it's too slow then speed up, if it's too fast then slow down. Easy, and implemented in every dive computer I've ever seen.
You have been repeating saying this and I am just curious.
Which dive computer would let you do that?
OP
MaxTorque
Contributor
The deco model i'm building for my pc application is portable in terms of code, therefore it would be relatively easy to compile it to suit any of the normal, commercially used ARM embedded processors, and so that code could be used on an existing tech computer (obviously i'd have to overwrite the existing software)
OP
MaxTorque
Contributor
That's exactly my plan, to do Tec diving. But in the meantime, asking the question on here gets some very interesting opinions up front to help me on my way!
If "wet notes work" then surely a display page on your dive computer with "the plan" showinng helps too doesn't it? It can show exactly what your wet notes show
ginti
Contributor
That's a cool plan, but I have a genuine question in this regard
Your profile mentions 24 dives, does it correspond to your real diving background? If you did more than 24 dives, how many did you do?
J-Vo
Contributor
J-Vo
Contributor
As an engineer and coder myself, I can say these are the kinds of things I would have thought of before I got real experience doing these types of dives.
@MaxTorque
Following two PDCs in my opinion is safer than trying to force myself into perfectly following the plan or try to "catch up" to it. Once you deviate in the slightest your plan is essentially invalidated and it is impossible to perfectly follow your pan.
Modern dive PDCs give plenty of ways to tell how badly you have screwed up like, current overpressure (GF99), surfacing risk(surface GF), TTS, and others. We can even adjust our conservativeness on the fly to generate a new ascent that gets us out faster.
@MaxTorque
Following two PDCs in my opinion is safer than trying to force myself into perfectly following the plan or try to "catch up" to it. Once you deviate in the slightest your plan is essentially invalidated and it is impossible to perfectly follow your pan.
Modern dive PDCs give plenty of ways to tell how badly you have screwed up like, current overpressure (GF99), surfacing risk(surface GF), TTS, and others. We can even adjust our conservativeness on the fly to generate a new ascent that gets us out faster.
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