Don

>I think you could make a case for yellow second stages.

I had considered that and discounted it as follows:

1.	The only regulator that is guaranteed to be safe to breath is the one
in my mouth.  Because it is in my mouth, my buddy should be able to find it
by touch alone.

2.	The backup should definitely *not* be seen as this is mine, and I do
not want anyone to take this from me.

3.	The stage regulators, may not be breathable since these are deco
stages taken beyond the MOD (as the majority of my diving is in salt).  If
they are breathable, then the best one to breath is in my mouth.

4.	In the case of cave diving, I don't really see much benefit in having
a second stage stand out since the stage itself should be a hi-vis colour and
the second stage easy to locate as the cylinder is on the line and quick to
find the second stage in an emergency.

5.	So, really the only argument for a yellow second stage would the be
primary regulator, but since it's in my mouth and easy to locate, then why
bother - common black regulators allow for interchangeability.

David Shimell
shimell@se*.co* <mailto:shimell@se*.co*> 
DDI: 01932 814096 * Mobile: 07770 282 202 * Fax: 01932 814343
Project Manager, IBM UK Web Server Group, Sequent Computer Systems Ltd,
Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK
registered in England and Wales under company number: 1999363, registered
office as above

-----Original Message-----
From:	donburke56 [SMTP:donburke56@ne*.ne*]
Sent:	Saturday, September 02, 2000 12:44 AM
To:	Shimell, David (shimell); Aldo P. Solari [APS];
techdiver@aquanaut.com
Subject:	Re: DIR-folks: why black ?

From: Shimell, David (shimell) <shimell@se*.co*>
> Think about it, what actually do we need to be able to see?  If the light
is
> poor, we carry a light, so you can locate your buddy by his light.  White
> back gas cylinders are also useful to locate your buddy.  Things that are
> removed from ourselves, e.g. stages, lift bags, etc need to be seen.  I
can't
> think of anything else, that *needs* to be seen.  Perhaps someone else
can?

I think you could make a case for yellow second stages.

Don Burke
Chesapeake, Virginia

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