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  1. #1
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    IANTD Bailout Strategy

    My recent OC mine course was via IANTD and as part of the course materials there is an overview of CCRs/SCRs and PSCRs in OHE. The chapter covers some of the detail that would then be elaborated upon in a CCR course.

    An element that I found interesting and simple was a rule that they have apparently tested extensively since 2000, in OW and OHE using instructors and practitioners in depths up to 120m and penetrations as far back as 1300m.

    This was basically that bailout gas is calculated on normal SAC for the max distance/depth/time etc. from point of bailout to first decompression gas switch, then multiplied by 1.5.

    Seems a pretty simple way of doing things, does anyone know how the testing was done or efficacy of the rule tested in depth?

  2. #2
    Established TDF Member OutOfTest's Avatar
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    IANTD Bailout Strategy

    Itís a pretty standard rule of thumb most people use.

    I use a SAC thatís doubled and then multiply by 1.5

    But Iím a solo diver

    Again, rule of thumb. But Iíve used it for deeper and longer dives than they suggest.

    I also do other things in my planning to give me more reserve than is needed.

    If anythingís ever gonna kill me underwater Iím trying my damned hardest to make sure itís not lack of gas.

    Iíll add to this I once bailed out over 2km at -85

    I used exactly as much gas pretty much as I thought I would, and what I thought would be reserve was left.


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    Last edited by OutOfTest; 19-03-2019 at 09:10 AM.

  3. #3
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    Quote Originally Posted by OutOfTest View Post
    I.

    I use a SAC thatís doubled and then multiply by 1.5

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    Am I reading this right, you plan for your SAC to be doubled and then you multiply this by 1.5 again??

  4. #4
    Established TDF Member OutOfTest's Avatar
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    Quote Originally Posted by cathal View Post
    Am I reading this right, you plan for your SAC to be doubled and then you multiply this by 1.5 again??
    Yeah. But my normal SAC is around 8l/min

    So itís no great shakes for me to plan on 20l/min like most people do.


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  5. #5
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    Quote Originally Posted by OutOfTest View Post
    Yeah. But my normal SAC is around 8l/min

    So itís no great shakes for me to plan on 20l/min like most people do.


    Sent from my iPhone using Tapatalk
    Thanks. Just checking as that formula means your planning your gas volumes with triple your normal SAC. Which might be realistic from reading the various accounts of real life bail outs.


 

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