USS Seawolf

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Four United States Navy submarines have been named USS Seawolf after the sea wolves :

The USS H-1 (SS-28) , originally Seawolf , entered service in 1913
The USS Seawolf (SS-197) entered service in 1939
The USS Seawolf (SSN-575) entered service in 1957
The USS Seawolf (SSN-21) entered service in 1997