Posted by MHK on March 19, 2001 at 18:03:17:
In Reply to: What is the difference? posted by Murddoc on March 19, 2001 at 17:39:33:
The difference is that an AL tank as it gets depleted swings from a negative bouyant to a positive bouyant, whereas a steel is negative and absent a alternative lift source you can't ascend...
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