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Turner and the man who would destroy his ship, Kptlt. Walther Schwieger, commander of Unterseeboot-20.
As Turner and Kptlt. Schwieger barrel toward confrontation, in London a secret operation known as "Room 40" deciphers coded German messages--ones that, had they been acted upon, could have saved the Lusitania and its 1,198 hapless souls.
U-107, commanded by KptLt. Gunther Hessler, sank fourteen ships totaling 86,699 tons on a single patrol between March and July 1941 ("The Most Successful Patrols," U-boat Net,