| Unit Name: | 5th U-boat Flotilla |
| Type: | U-boat flotilla |
| Dates: | 1938–1940 1941–1945 |
| Garrison: | Kiel |
| Nickname: | Emsmann Flotilla |
| Notable Commanders: | Korvettenkapitän Hans-Rudolf Rösing |
The 5th U-boat Flotilla (German 5. Unterseebootsflottille), also known as Emsmann Flotilla, was a U-boat flotilla of Nazi Germany's Kriegsmarine during World War II.
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 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.
| Duration | Commander |
|---|---|
| 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 |