Re: Fw: Re: [PSUBS-MAILIST] Scuttle valve

[irox <irox@ix.netcom.com>]

Hi Steve,

I think there is a good reason to have a scuttle valve (or
a flood/bailout valve) in a psub.  If you're stuck on the bottom and
you want to go home, and you've got no other options, then
it's time to flood the boat (this will help equalize the pressure
inside the sub, with the outside water pressure, so you can
open the hatch), open the door and scream your way to
the surface (so the air expanding in your lungs will have an
exit to use).

This is something I would like to practice some day, maybe
in a swim pool, may be a little deeper.  But I'm not sure I would
what to do it with a full complete sub, maybe an almost finished
by not furnished inside or something).  I remember Ray talking
about building a sub which was water proof inside and could
be flooded on the bottom... something like that would be a
good test rig for practicing exits.

Also, it's good to calculate the size of your scuttle valve so you
can flood the sub quickly (so you aren't sitting in cool water
for 5 hours while the sub slowly fills up).

Ian.


-----Original Message-----
From: Steven Mills <cirtemoeg@juno.com>
Sent: Mar 8, 2004 2:04 PM
To: personal_submersibles@psubs.org
Subject: Fw: Re: [PSUBS-MAILIST] Scuttle valve

Me again,

I have to correct myself here.  I think most all ships and boats,
regardless
of era, had scuttle valves, even civilian. I would wonder if there be
"any" reason
to have one on a personal submersible? I know, seems like a ridiculous
question to ask, but would there be?

--Steve



On Mon, 8 Mar 2004 13:40:57 -0800 Steven Mills <cirtemoeg@juno.com>
writes:
> I believe, historically, most military ships and submarines of the 
> WWII
> era had scuttle valves.  I recall that film U571 [ I believe that's 
> it ]
> had the
> Enigma machine onboard and the Allies were after it.  Fearing 
> capture
> of both sub and Enigma codes the crew made an attempt to scuttle or
> sink it before it could fall into Ally hands.  They did not succeed.
> 
> Have you seen the film?  Are you interested in WWI and WWII era
> submarines
> and submarine development?
> 
> regards, --Steve
> 
> 




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