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Nuclear Submarine

The first nuclear submarine ever built USS SSN 571 was the world's first operational nuclear powered submarine and the first submarine to complete a submerged transit of the North Pole on 3 August 1958. Owing to its nuclear propulsion, the SSN 571 could operate for much longer periods of time than standard diesel-electric subs of the day. As a result, the SSN 571 broke many records in its first few months at sea, primarily related to longevity of unbroken service.