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From: "David Shimell (shimell)" <shimell@se*.co*>
To: "'TomFuhs@wo*.at*.ne*'" <TomFuhs@wo*.at*.ne*>,
     techdiver@aquanaut.com
Subject: RE: DIR harness question
Date: Fri, 24 Jul 1998 10:52:46 +0100
Tom

>One last sort of related question.  When wearing a weight belt with this
>harness, most people I've seen wear it inside the crotch strap.  Is this
>optimal?  Seems it would be easier to ditch if outside the crotch strap,
>however much more hassle to put on (last) when on rocking boat.

Clearly, it is easier to put a weight belt on first.  However, putting it on
first means that if the weight belt falls off accidentally, the crotch strap
will hold the belt thereby avoiding a ballistic ascent.  To deliberately
ditch a weight belt put on under the harness is now a two stage process:
undo waist strap and then undo weight belt.

In "technical" i.e. no clear surface diving, as mentioned in an earlier
post, you have to sort your problems underwater.  Blow and go is not an
option.  The most likely failure mode with a weight belt is that it is
ditched by accident - the crotch strap can prevent this.  (This situation
becomes even more likely if the diver is wearing a compressible exposure
suit.)  For these reasons and for streamlining, many people use a V-weight
which cannot be ditched independently of the back cylinders.

David Shimell
Project Manager, Sequent Computer Systems Ltd., Weybridge, UK.
Email: shimell@se*.co*

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