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    All Days  | 
    WTM 005  | 
   
  
    (Sea Walls)  | 
   
 
  
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    These walls are made to stop a sea invasion of the city.
    They restrict junk movement to single file. Any junk approaching can be hit by all six
    catapults as it sails through. On each wall two catapults fire out to sea and one fires
    across the opening or into the harbour. | 
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    Approaching by land.  | 
    Approaching by air. | 
   
 
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