[PSUBS-MAILIST] cng tank for buoyancy

[hank pronk via Personal_Submersibles]

Steve,You had me confused when you mentioned the aluminum liner corroding.  I misspoke, the aluminum liner is about 1\2 inch thick not 1 inch.  But that is moot with the tanks I am talking about.  The tank I am looking at is a type 4 tank witch has a plastic liner, not aluminum.  The type 3 tank has the aluminum liner.  There is still lots to consider and research.  It just seems so simple to use these tanks, so there must be a problem ;-)Hank
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