![[STARFLEET COMMAND LOGO]](/images/logo/large.gif)
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          Starships  | 
      
          
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          Known Challenger Class Starships  | 
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          U.S.S. Armstrong  | 
      
          NCC-57537  | 
      
          "Apocalypse Rising" (DS9)  | 
   
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          Ambushed by a Klingon battle group in 2373, took heavy casualties. Docked at DS9 for medical aid. Named for first man on the moon Neil Armstrong.  | 
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          U.S.S. Buran  | 
      
          NCC-57580  | 
      
          "The Best of Both Worlds" (TNG)  | 
   
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          Lost in the battle of Wolf 359.  | 
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          U.S.S. Kearsage  | 
      
          NCC-57566  | 
      
          "Firstborn" (TNG)  | 
   
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          A scheduled rendezvous with the Enterprise-D in 2370 was postponed for four days to allow Worf and Alexander to attend the Kot'baval festival.  | 
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          Starships  | 
      
          
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