From: eaglesondouglas@gmail.com   
      
   Well I go thru my list of ideas and found an old one.   
   It is robot surface craft with enough fuel to go to   
   the English Isle's. Launched from a boat ramp in the   
   Chesapeake Bay USA.   
      
   The key to long range craft is basically to over come   
   drag.  Note that the craft mass has no effect on   
   drag efficiency.  It is a length to beam relation.   
   The mass only slows the craft acceleration.   
   But, this craft has a constant velocity.   
      
   My design uses Ferro cement hulls.  With a thickness   
   and length and mass suitable for trailering by a small truck.   
   Making a very inexpensive craft hull.   
      
   Just be reminded that a hull is about less than 25% of   
   the final cost.  I can make these in my backyard.   
   And ship them to the customer by  container ship.   
      
   I need advice on the propulsion engine. Is a $400 Chinese   
   air cooled diesel motor efficient enough? Is there some   
   kind of fuel to craft volume ratio as a design issue?   
   With modern technology the basic cost is the engine.   
      
    Also is a semisubmersible craft better efficiency wise   
   in higher seas? Here the mass is a big concern,   
   considering a wave deceleration effect. Maybe only   
   wave breakers are the concern, since waves are   
   a up and down effect, canceling out velocity   
   impact?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)