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>I am interested in knowing how one can determine the exact amount of
>negative buoyancy a wet suit (i.e. uncrushed neoprene) can have at
>depth.
I don't believe a 1/4 inch wetsuit would ever be negative.
As far as the calculation, it depends how involved in the geometry of the
situation you're willing to get.
The material is, by definition, one quarter of one inch thick.
The total square footage of the suit, then, multiplied by a quarter inch,
will give you a total volume that the suit occupies.
That same volume, when made up of seawater has a weight, and that weight
minus the weight of the suit is the bouyancy.
If the seawater weighs more, the bouyancy is positive.
If the suit weighs more, it is negative.
What changes, when the suit compresses at depth, is its thickness. That
means that the volume of seawater used to calculate the displacement
weight is smaller, and weighs less (really fast).
The only puzzle, (left intentionally as an exercise for you, gentle
reader), is the piecing together of the total square footage of suit.
------------
"C'mon, you sons of bitches, you
want to live forever?"
-First Sergeant Dan Daly, 1918
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