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From: "Rowell, Ewan C" <RowelEC@te*.co*>
To: "'Jim Cobb'" <cobber@ci*.co*>
Cc: Tech Diver <techdiver@aquanaut.com>
Subject: RE: Bouyancy Test / was Tanks, buoyancy, et al..
Date: Thu, 9 Jul 1998 06:37:56 -0500
Jim,

I wasn't arguing the case against dry suits.
I'm with you on that one.

You said:

> And how do you make yourself neutral at the bottom with no air in your
> 
> primary BC  and with steel doubles & steel stages?
> 
Same as you would with aluminium ones, I expect.
After all, steel or aluminium, I'm just as negative if I was weighted
correctly at the start.

> But in an emergency you can ditch the non-essentials, hammers,
> crowbars, 
> lights, etc. while I would imagine you would not want to ditch your 
> stages.
> 
And what difference does having aluminium or steel tanks make?

Surely the message is about being weighted properly, which I agree is
critical,
and that arguing about steel or aluminium is missing the point.

Personally I'd be unwilling to do any dive that required stages in a
wet-suit because, in order to get my weight right for stops, I enter the
water about 25 pounds negative due to weight of gas. I'd be even heavier
at depth due to suit compression. In a dry suit I don't have the
additional weight AND I've got the redundant buoyancy.


Regards, Ewan
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