----- Original Message ----- 
  
  
  Sent: Friday, May 20, 2005 11:21 AM
  Subject: Hunley ambient? and ballast and 
  dive plane operation.
  
  Dear Webmaster for the official Hunley submarine 
  site.
   
  I am a personal submarine owner. I am also a 
  member of Psubs.org, a personal submarine owner web site and forum.  We 
  have been discussing the Hunley and trying to figure out how she 
  worked.
   
  I am interested in how the Hunley's ballast tanks 
  worked as well as how she submerged.
   
  Would you please tell me if my below description 
  is correct and if it is not, would you please explain to me how it is 
  wrong.
   
   
  My information is that the Hunley had open top 
  (bathtub style) ballast tanks that were open to the hull interior. My 
  information is that the Hunley did not carry compressed air 
tanks.
   
  From this I deduced that the Hunley had all her 
  air from the surface trapped within her when she dove and could never lose any 
  of that air.
   
  This would make the Hunley like an upside down 
  glass trying to submerge without losing any air. The only way the Hunley 
  could submerge in my mind, would be for the Hunley to use 
her
   
  forward motion and dive planes to force her 
  underwater, is this correct?  Then once underwater the superior water 
  pressure would force water into the opened valve of the open top ballast tanks 
  and compress the atmosphere
   
  in the Hunley. Wouldn't this make the Hunley an 
  ambient submarine as opposed to being a 1 atmosphere submarine? 
   
  Then when the Hunley wanted to accend the crew 
  would somehow utilize the compressed atmosphere (how did they do that?) and a 
  pump, to pump the water out of the ballast tanks and then the
   
  atmosphere in the Hunley would decompress and 
  return to 1 atmosphere and she would accend. Is all the above of what I just 
  wrote correct? Also, has anyone done an analysis of how stable or unstable the 
  Hunley would be if she dropped
   
  her keel weight to return to the surface, and 
  were there any indications of that trying to be done inside the Hunley 
  artifact?
   
  I would appreciate if you could cover all the 
  above questions and correct or confirm what I wrote so I can share them with 
  my fellow personal submarine owners at Psubs.com
   
   
  Thanks very much.
   
  Sincerely,
   
  Bill Akins.
   
   
   
   
  
  
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