Contingency Deco Plan

[Beau640]

I agree that would be a bailout plan. I didn't mean for that to be applied to overstay. Everyone should already have planned for overstay before they even set foot in the water. Always have written down on wet notes your plan, the next deepest, and plan for longer bottom time if that should occur. You need to enter the water with gas to cover all those plans. I agree changing your computer is not a solution to overstay

 

[Remy B.]

Your suggested strategy is wrong.

You are suggesting amending an algorithm to meet your gas supply.

You should amend your gas supply to meet your algorithm.

I can't explain it any simpler than that.

I believe you are confused, I can easily say then my contingency plan with that max amount of equipment I will carry on is 15min and completing a not so known/common profile, but that is not the worst case scenario, i'm trying to plan it to the max capacity of gas, without depleting it completely and not running over the CNS but still completing a known Algorithm, that maybe be aggressive but it is known.

I don't know it you understand what I'm trying to say, I have a max capacity of equipment, built a over-run Contingency plan, that allow me to still have some spare gas, ( extra contingency if you can called that, breathing a little more heavily etc, etc ) and still complete a known Deco profile.

in theory ( just theoretically speaking ) I'm able to go to surface as I was able to complete a known profile, without running out of Deco gas or exceeding the max CNS.

If I set the GF to 90 I run over the CNS, if I set it to 95 I run over my max Deco gas

 

[Remy B.]

That'd be a bailout contingency. A plan you jot down (or set the computer) for instances like an incapacitated buddy. Scenarios where you'd be willing to expose yourself to higher risks in order to save a life.

Bailout is ENTIRELY different to an overstay or lost gas contingency.

The concept of bailing out as a response to overstay at depth is illogical to the point of absurdity.

Basically..... "I'm very overloaded with inert gas and need longer decompression...so my response will be to reduce my deco" .

It's inconsistent with Darwin's law.

Didn't see this one, I guess I'm the one confused now.

What do I called Bailout or Contingency or neither ?

 

[PfcAJ]

If I set the GF to 90 I run over the CNS, if I set it to 95 I run over my max Deco gas

If you go over the CNS% probably nothing happens. If you run out of gas you drown.

Simple choice right there.

 

[Remy B.]

Lets called a Fu.. .p and everybody is happy

 

[Remy B.]

If you go over the CNS% probably nothing happens. If you run out of gas you drown.

Simple choice right there.

If I'm running out of gas that makes me go to surface and have not complete a unknown profile, not saying I will get a hit but it is kind of a grey area, and no cushion for extra gas in the case you are breathing heavier.

 

[Remy B.]

Giving the info, the amount of gas I carry, the amount of air I consume, and lets say that your buddy is stuck, lost, entangled ( worse case scenarios ), at what point will you leave him there or stop helping him ?, in my case it will be the extra 20min and completing a VPM-B normal profile.

What will be your choice ???

 

[PfcAJ]

If I'm running out of gas that makes me go to surface and have not complete a unknown profile, not saying I will get a hit but it is kind of a grey area, and no cushion for extra gas in the case you are breathing heavier.

Completing a "known profile" doesn't mean you won't get bent, dude.

 

[Dsix36]

Giving the info, the amount of gas I carry, the amount of air I consume, and lets say that your buddy is stuck, lost, entangled ( worse case scenarios ), at what point will you leave him there or stop helping him ?, in my case it will be the extra 20min and completing a VPM-B normal profile.

What will be your choice ???

I will give up on my buddy when I have a deco obligation of 540 minutes and I only planned on 240 minutes. In other words well over 30 minutes at 300 foot. You either do exactly what you are trained to do or you have enough knowledge to make an informed decision without asking others what they would do.

 

[DevonDiver]

Don't obsess over this concept of 'known' profiles. With experience a tech diver should KNOW what is a workable profile or not. Experienced tech divers should be able to scribble down a profile on the back of a beer mat that'd get them to the surface safely. Learn the curve...

I'd suggest that there's other contingency solutions that haven't been considered. If there's a real risk of entrapment and overstay, you can simply arrange an emergency supply of deco gas hanging on the shot line. Or use support divers. Or establish a DSMB signalling protocol to communicate such a scenario to the boat... who'll respond by supplying additional gas.

In tech diving, there has to be a limit on 'worst case scenarios' that we plan for. I'd suggest that limit is 'foreseeable and reasonably likely'.

We mitigate foreseeable risks.... if getting entrapped for 20 extra mins was genuinely foreseeable, then perhaps the prudent course of action would be to not conduct that dive in the first place.