Otto Kretschmer (May 1, 1912 - August 5, 1998) was a German U-boat commander of the Second World War, and was the most successful Ace of the Deep. From September 1939 until being captured in March 1941, he sank 47 ships for a total of 274,333 tons. For this he received the Knights Cross with Oak Leaves and Swords, among other commendations. Wikipedia
The definitive Wikipedia entry for Otto Kretschmer. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Otto_Kretschmer
