"German Empire" . . "1934-11-04Z"^^ . . . "1898Z"^^ . "Commander Waldemar Kophamel (August 16, 1880 \u2013 November 4, 1934) was a successful and highly decorated German U-boat commander in the Kaiserliche Marine during World War I.In his time as commander of U-35 and U-140 he succeeded in sinking 54 ships for a total tonnage of 148,852 gross register tons (GRT). One of his notable actions was sinking the Diamond Shoal Lightship No. 71 (LV-71)."@en . "Kophamel, Waldemar"@en . "Waldemar Kophamel"@en . . "1934Z"^^ . ", Nov 3, 1914 – November 12, 1915" . . . "1880-08-16Z"^^ . "German World War I U-boat commander" . "1880Z"^^ . . ", Mar 28, 1918 – November 11, 1918" . "1920Z"^^ .