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Re: [PSUBS-MAILIST] "Frankenboot"



Brian, after I replied to this email I decided to upload ten pics to the Conceptuals section of my Kodak site.  I've "invited" the group to view them from the site itself.
 
Hope you like them.  Bill Akins . . . you may like these, too.
 
Warm regards,
Rick L
----- Original Message -----
From: Brian Cox
Sent: Tuesday, November 15, 2005 12:52 AM
Subject: Re: [PSUBS-MAILIST] "Frankenboot"

What if you had a large surface vessel that had a large volume of air, say just a simple cylinder, like 6' in dia by 20' long.  That would give you quite a bit of floatation.  But if you tried to go submerged with that you would be having to move a very large mass underwater.  But what if you opened the ends of the cylinder wide open and ran propultion through that space, then that space would not really be a displacment factor.  The only dispacement would be just the rim of the cylinder.   Turning might create problems but you might be able to get around that somehow. 
 
This might be a way to cheat your displacement of a large surface vessel with out paying the price for the large mass under water.  The devil would be in the details.
 
My 2 cents
 
Brian
 
 
----- Original Message -----
Sent: Monday, November 14, 2005 15:55
Subject: Re: [PSUBS-MAILIST] "Frankenboot"

Paul,

Yes, I found Dougs site some time ago, there's some pretty inspirational stuff in there. It is all part of why I believe this to be possible.

And yes, the WWII boats have a shape that is much more practical for me than my original idea and I don't need a double hull per see for the ambient. Imagine a forward bow tank that could double as a vee berth! Large volume, dual use, well baffled, waterproof roll up mats stowed for divening. Fleet boat or U-boat, builders choice.

Is it doable? I don't know yet. I recently discovered the 444 cf hp cylinder, kinda puts a little different spin on things. Long narrow shape for a hull?, small compensated airspace for machinery?, four of those 444's?, money, time, effort...what precisely is possible?

Even though I had found it, thanks so much for the link Paul.

Joe


From:  Paul Kreemer <paulkreemer@gmail.com>
Reply-To:  personal_submersibles@psubs.org
To:  personal_submersibles@psubs.org
Subject:  Re: [PSUBS-MAILIST] "Frankenboot"
Date:  Mon, 14 Nov 2005 14:44:00 -0800

Boy I think I'd look at Doug Jackson's http://www.submarineboat.com
website first for comparisons.  He's building a dry ambient where
most of the SportSub's are wet ambient.  Doug has a large surface
cockpit/rear deck area which obviously floods when underwater but which
provides a nice seating and cargo area while surfaced. 

Doug's design looks different from most any other sub, and different
from Joe's WWII look, but I think it has some great practical ideas and
more similarities to what Joe is describing.

Paul

On 11/14/05, Joseph Perkel <joeperkel@hotmail.com> wrote:

Rick,

This sub uses the main cabin as ballast tank http://www.ivccorp.com/

Here is proper use of the other suggestion http://pbskids.org/sesame/ernie/index.html

Thanks :)

Joe



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