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 Hi, guys -WWII fleet boats had more hull under than 
over. The only vessels with more over are surface ships, whether monohull or 
catamaran. 
  
  
Notice the water line for the USS Barb at the link 
above.  Most of the "bulk" above the water line is simply a shell designed 
for seakeeping and to provide protection for plumbing, valves, etc. 
  
Rick 
Vancouver 
  ----- Original Message -----  
  
  
  Sent: Saturday, October 29, 2005 5:50 
  PM 
  Subject: Re: [PSUBS-MAILIST] Preliminary 
  calculations, please check me 
  
  Yes, using 63 lb/cf of seawater gives about 16cf needed to 
  weigh 1000lb.
  I think a WWII style boat which was more on the surface 
  than submerged would have 30% or more reserve buoyancy.  Like Myles 
  says.
 
 
  
  On 10/29/05, Myles 
  Hall <myles.h@sasktel.net> 
  wrote:
  
    Joe, 
      
       My design calls for about 
    45%.  I want to get that thing out of the water when surface 
    running.  Also, I figure a guy needs all the bouyancy he can get when 
    launching the thing so that you don't need 6' of water.  I'm going for 
    the "better to have too much than not enough" concept.  Hopefully I'm 
    not overlooking something. 
      
    Myles.   
  
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