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>From: Ted Phelps [mailto:tphelps@ph*.co*]
>Some say to use the
>drysuit for buoyancy, leaving the BC deflated, except on the surface, while
>others are saying nearly the opposite. Can anyone give me some guidance?

Sure. First thing is to be well balanced on the begining of dive.
Your suit has some volume of gas in it, which will keep you warm
and in your BC there is only such volume of gas, which equals
to weight of your gas you'll breath during the dive.
I use formula 200L of 1Bar =0,24kg
When you descent you put gas to your suit and your BC to equalize
volume changes dependent on your depth. So there is the same
volume but a different presure dependent on your depth.

e.g: 
on surface you've got 3L in your suit and 4L in your BC of presure 1Bar
in 60m you've got 3L in your suit and 4L in your BC of presure 7Bar

During dive you use your gas, you become lighter and you have to dump your
BC partialy.
And at the end of dive your BC is nearly empty. Suit keeps the same volume
of gas
all the time.


So conclusion is - you are using BC for buyocancy control and you put gas
in your suit and BC to compensate for volume changes dependent on depth.

Uff, hope it's clear now. It's hard for me to explain in foreign language
:-))

Regards
  Jozef Gliviak
  Slovakia
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