Jürgen Oesten (24 October 1913 – 5 August 2010) was a "Korvettenkapitän" in the "Kriegsmarine" during World War II. He commanded the U-boats and , and then served as a staff officer before returning to command . He sank nineteen ships for a total of  gross register tons (GRT), and damaged four others for  GRT;
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Career.
Born in Grunewald, Berlin, Oesten joined the Reichsmarine in April 1933. After serving aboard the cruisers and he transferred to the U-boat arm in May 1937, and was appointed watch officer of .
World War II.
U-61.
In August 1939 Oesten commissioned , sailing on nine patrols, and sinking five ships.
U-106.
Taking command of in September 1940, he sailed on three patrols sinking another ten ships. On 20 March 1941 during an attack on convoy SL-68 he damaged the British battleship .
9th Flotilla.
In October 1941 Oesten became the first commander of the "9th U-boat Flotilla" based in Brest, France. In March 1942 he joined the staff of "FdU Nordmeer" directing the U-boat war in the Norwegian Sea.
U-861.
In September 1943 Oesten returned to active duty in , sailing first to Brazilian waters where he sank another two ships and then around the Cape of Good Hope to join the "Monsun Gruppe" of U-boats operating in the Indian Ocean. He sank another two ships, bringing his career total to 19 ships sunk, totalling  GRT, and four ships damaged ( GRT), before reaching Penang on 23 September 1944. "U-861" left Soerabaya, Dutch East Indies, in January 1945 carrying a cargo of vital materials, but only two torpedoes, and reached Trondheim, Norway, in April, just before the German surrender.
Post War.
Oesten was a technical advisor for the 2005 submarine simulator "Silent Hunter III".
References.
Notes.
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Bibliography.
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