|5th U-boat Flotilla|
|Korvettenkapitän Hans-Rudolf Rösing|
The flotilla was formed in December 1938 in Kiel under the command of Korvettenkapitän Hans-Rudolf Rösing. It was named in honour of Oberleutnant zur See Hans Joachim Emsmann, a U-boat commander during World War I, who died on 28 October 1918 after his U-boat UB-116 was sunk by a mine. The flotilla was disbanded in January 1940 and the boats were all transferred to 1st Flotilla.
The flotilla was re-formed as "5th U-boat Flotilla" in June 1941 under the command of Kapitänleutnant Karl-Heinz Moehle as a training flotilla with her base in Kiel. In 1946 Moehle was sentenced to five years in prison, after being found guilty of passing the Laconia Order to new U-boat commanders before they went out on patrol. He was released in November 1949.
|December 1938 – December 1939||Korvettenkapitän Hans-Rudolf Rösing|
|June 1941 – August 1942||Kapitänleutnant Karl-Heinz Moehle|
|September – November 1942||Korvettenkapitän Hans Pauckstadt (pro tem)|
|November 1942 – September 1943||Korvettenkapitän Karl-Heinz Moehle|
|September 1943 – October 1943||Kapitänleutnant Jost Metzler (pro tem)|
|October 1943 – May 1945||Korvettenkapitän Karl-Heinz Moehle|
- "Uboat.net". The Flotillas – 5th Flotilla (Emsmann). Archived from the original on 20 February 2007. Retrieved 12 February 2007.
- "Uboat.net". The Flotillas – 5th Flotilla. Archived from the original on 24 February 2007. Retrieved 12 February 2007.
- "Uboatnet.de". Die Flottillen – 5. Unterseebootsflottille. Archived from the original on 2 January 2007. Retrieved 12 February 2007.