From: vaughnsimon@gmail.invalid   
      
   > My uneducated wild guess is that the Stirling lets the vessel hide silently   
   > on the bottom much longer, they say weeks versus days. It doesn't look big   
   > enough to substitute for the Diesels for main propulsion.   
   >   
   Look at the diagram again.  The system charges the main battery, which is used   
   both for ships systems and propulsion.  No doubt, the AIP system doesn't match   
   the capacity of the main diesels, but still can be used for limited propulsion.   
      
   Vaughn   
      
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