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Date: Mon, 19 Jan 1998 07:38:58 -0500
To: Jammer Six <jammer@oz*.ne*>, techdiver@aquanaut.com
From: Art Greenberg <artg@ec*.ne*>
Subject: Re: 3 missing in WPB Fl / Divers Supply "coverup"! FROM
     rec.scuba, s
Okay, I'm not an experienced, tech-trained, tri-mix certified diver.
Please tell me why "neutral is neutral." I don't understand how you can
disregard the loss of buoyancy at depth of the wetsuit in this scenario.

=Art=


At 12:00 AM 1/19/98 -0800, Jammer wrote:
>>Assuming the guy was diving a decent two-piece (jacket and john) wetsuit
>>(which he needed for the water temps Dan is reporting), he is going to need
>>something like 40 lbs of negative buoyancy to get himself and his suit
>>neutral at the surface.  Some of that will be in his tankage and other
>>gear, the remainder will be on his weightbelt.  Assuming double 100s, a
>>steel 72 and an aluminum 80, he's carrying about 28 lbs of gas, which the
>>wings are lifting at the start of the dive.  At 250 fsw, call it 8.6 ata,
>>for all practical purposes the suit has gone to zero buoyancy, maybe even
>>negative, and his wings now have to "take up the slack" and lift that 40
>>lbs.
>>
>>We're talking almost 70 lbs of required lift, just to get neutral at the
>>bottom.
>
>
>Wrong.
>
>No wonder they can sell bondage wings.
>
>Who taught you this crap?
>
>Neutral is neutral. 
>
>I met an experianced, tech-trained, tri-mix certified diver on a boat 
>last November who believed the same bullshit.


Art Greenberg
artg@ec*.ne*

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