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Hmmm, good question Paul.
However; wouldn't the compressed air going into
what was FORMERLY an ambient soft tank be required to exert enough pressure
against the water in the tank to force it out and therefore even though the tank
was now hard sealed, (as opposed to ambient soft)
wouldn't that compressed air have to push hard
enough to force the water out at depth and then once it exceeded the water
pressure and started filling the tank with air, wouldn't the compressed
air equalize the tank against the outside water pressure (so
it
wouldn't crush?) and
then when you accended wouldn't you need an auto overpressure valve to release
excess air from the tank as it expanded? Would it make any difference if the
tank were inside the pressure hull or outside it?
Good question. I leave that to be answered by more
educated on buoyancy subbers than me.
Bill.
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