# Re: Weight Adjustment for Diving in Fresh & Salt Water

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Posted by Chuck Tribolet on July 17, 2002 at 13:45:41:

In Reply to: Re: Weight Adjustment for Diving in Fresh & Salt Water posted by Chris on July 16, 2002 at 08:55:11:

The volume can be calcualted from weight. Take the
weight of the diver and gear (in pounds) and
divide by the density of fresh water (in pounds
per cu ft) and you get the volume in cu ft:

And then you come up with the forumla Karl posted,
and which I've been posting for years. I worked it
out when I was in OW class.

Let's say we have 250 pounds of diver+gear.
My formula gives .0256*250 = 6.4 pounds.
They have a volume of 250/62.5 = 4.00641026 cu ft.
1.6*4.00641026 = 6.41025642, which is different only
by rounding error in the .0256.

Weight is a heck of a lot easier to measuer than
volume.

However, Karl, Chris didn't post any calculus, just
summations, which are high school algebra.
Calculus is characterized by differentials and
integrals, and there weren't any in Chris's paper.

Chuck

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