[PSUBS-MAILIST] O2 tanks

[hank pronk via Personal_Submersibles]

Thanks' Scott,Do you know what the max depth rating for an empty Scuba O2 tank is.  I suppose you could increase the rating by using only part of the volume and leave pressure inside them.  A sub could carry several in that case since they are close to neutral buoyant.  Hank 

    On Saturday, July 1, 2017 8:25 AM, Scott Waters via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 Hank,Alvin has all the O2 supply internally. Pisces has the mission O2 internally and emergency supply externally in special steel cylinders that are pressure tested to 1.25 max depth while empty.Thanks,Scott Waters


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-------- Original message --------From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> Date: 7/1/17 9:59 AM (GMT-05:00) To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> Subject: [PSUBS-MAILIST] O2 tanks 
Hi all,How do deep diving subs deal with external O2 supply.  Does Alvin have external tanks for O2,  are they super special tanks?Hank_______________________________________________
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