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B-515, sometimes known as U-434 after her pennant number, is a Tango-class submarine that served in the Soviet Navy and later the Russian Navy. Built in 1976 in Nizhny Novgorod, the submarine remained in active service until 2001. She was used for hunting, espionage, and patrol purposes, operated by a 78-man crew. Now docked in Hamburg, Germany, she is open to the public as a museum ship. This 2020 photograph shows a panorama of B-515's interior.Photograph credit: Tim Rademacher