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 HI, 
My name is Les, in Australia, I joined psubs almost 
a year ago,after much much reading, and learning, an experience 
I am sure that you are all aware, I do have a couple of questions that 
some-one may be able to assist me with. 
My aim is a specialized maximum depth 300feet 1atm 
sub, of which weight is most critical, therefore I am considering the 
exotics such as carbon fibre and Kevlar 
. 
  1. Any experienced knowledge on these 
two materials re this pressure 150psi  that anyone can give me would be 
most appreciated. 
  2. Any information regarding acrylic bubbles 
or more precise half bubble or dome 4 feet (1200mm) to 6 feet (1800mm)diameter 
for this depth and pressure, would also be  
     of  assistance. 
Looking forward to learning more  
Cheers  
Les 
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