Re: HP, weight and visability

[SFreihof <SFreihof@aol.com>]

Hello Everyone!

This discussion group always intrigues me, but I have to admit that most of
you are WAY ahead of me on design, materials, and skills.  No wonder I've
settled on an ambient dry.  There's no way I could handle fabrication of a 1
atm sub.  So those of you who dare, who have the skills for design and
fabrication of a pressure hull, I tip my hat to you.

Meanwhile, I'll satisfy myself by building a bubble... Much simpler.

In a message dated 4/20/98 12:11:23 AM SA Pacific Standard Time,
swalinga@telusplanet.net writes:

<<  An inner hull of 1/2 inch and outer of 1/4 inch. The space between the two
will be used as soft ballast (or open to the environment). I was going to give
the outer hull the thicker hull and use that as the pressure hull but that
forces the issue of pumping out the water if I want to use it as a ballast. If
not then it would be better to give the outer hull the thicker hull and use
the supports holding the inner hull for reinforcing beams for the outer.
Having the inner hull as the pressure hull also allows me the luxury of a
safety shell before anything makes it to the inner main pressure hull. 
 
     Any thoughts from anyone? So many things to consider... 
  >>