Re: [PSUBS-MAILIST] A hull within A hull

[Peter McKellar <mckellar@earthlink.net>]

I should know better about the aussie subs but i dont sorry.  i *think* they are double hulled and of danish design.  they r also deisel.

i only mention this because they are current design rather than 'old' tech.  I believe there were some 'silent running' issues that the double hull helped with.  my brother's fiancee is a lawyer with the firm overseeing it all.

cheers
peter

-----Original Message-----
From: Dewey Mason <drmason2001@yahoo.com>
Sent: Mar 16, 2004 10:46 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] A hull within A hull

Hi All,
Actually, double hulled subs are not new, and in fact
are the standard design on most Russian and former
Soviet bloc allies boats. They are heavier, and
stronger than mono hulled boats, and actually easier
to make quiet. The outer hull gives tremendous
buoyancy as a ballast tank, and with bulkheads allows
a great safety margin as well as trim control on the
surface. I plan to use multiple sectioned inner hulls
inside a streamlined outer for my boat.

Dewey R Mason II
Abyss Marine Technologies
--- Jake Colman <jake@superdailies.com> wrote:
> I just had an idea while reading a cross section
> book. what about a sub 
> with a 4 foot outer hull( made of thin steel or
> light weight material) 
> and the a 3 foot inner steel pressure hull. the 6
> inch space arround  
> the 3 foot hull to the outer hull could be used as a
> balsast tank while 
> keeping a very streamlined shape. because the outer
> hull is not 
> preasureized you would still only have one through
> hull connection for 
> each wire. just another idea to throw out there.
> 


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