The USS Pennsylvania nuclear submarine is the world most powerfull killing machine. Watch this documentary and discover the deadliest submarine in the .\r
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USS Pennsylvania is a United States Navy Ohio-class ballistic missile submarine which has been in commission since 1989. The Ohio class is a class of nuclear .\r
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The Largest Submarine in The U.S. Navy Biggest Submarine Biggest Submarine World War II War Documentary Discovery Biggest Submarine World War II War .\r
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Big, Bigger, Biggest: Apocalypse Sub - The Largest Submarine in The U.S .Navy | Dominic Ha USS Pennsylvania is a United States Navy Ohio-class ballistic .