The Story of the Laconia, U-156 and Werner Hartenstein
Karl Hoeffkes - "Laconia"
Werner Hartenstein was a German naval officer during World War II who commanded the U-boat U-156. He was a recipient of the Knight's Cross of the Iron Cross of Nazi Germany. Hartenstein was credited with sinking 20 ships totaling 97,504 gross register tons (GRT), and with damaging three ships and a destroyer.