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Discussion of diving methods and equipment available prior to the development of BCDs beyond the horse collar. This forum is dedicated to the pre-1970 diving.
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captain
Plank Owner
Posts: 1440
Joined: Mon Jul 04, 2005 11:32 am
Location: LaPlace, LA

Fri Dec 07, 2007 12:45 pm

The Navy's use of 3000 psi tanks goes back to at least the DA Navy Approved. I had a 1955 Navy repair manual which showed the 3000 psi 90 cuft cylinders and the the DA Navy Approved. This was several years before the long yoke for the banjo fitting or the heavy yoke appeared.
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