| 13th U-boat Flotilla | |
|---|---|
 U-995 is the only surviving VIIC/41 submarine, first being used by theRoyal Norwegian Navy as HNoMSKaura; she is now a museum in Germany | |
| Active | June 1943 – May 1945 |
| Country |  Nazi Germany |
| Branch |  Kriegsmarine |
| Type | U-boat flotilla |
| Garrison/HQ | Trondheim, Norway |
| Engagements | World War II |
| Commanders | |
| Notable commanders | KorvettenkapitänRolf Rüggeberg |
| Insignia | |
| The 13th Flotilla emblem |  |
The13th U-boat Flotilla (German13. Unterseebootsflottille) was aWorld War IIU-boat unit ofNazi Germany'sKriegsmarine stationed inTrondheim,Norway. The emblem of the unit was a cross with aViking ship in the middle.
In 1941, construction of theDORA 1 submarine base started in Trondheim. Two years later, in June 1943, it was handed over to the flotilla commander,Korvettenkapitän (laterFregattenkapitän)Rolf Rüggeberg. The 13th submarine flotilla was a front line unit, and a total of 55Type VIIC andVIIC/41 served with it until theend of the war in May 1945.
| Number | Type | Service in 13. |
|---|---|---|
| U-212 | VIIC | June 1, 1943 - October 31, 1943 |
| U-251 | VIIC | June 1, 1943 - June 30, 1943 |
| U-255 | VIIC | June 1, 1943 - November 30, 1943 |
| U-277 | VIIC | November 1, 1943 - May 1, 1944 |
| U-278 | VIIC | September 1, 1944 - May 8, 1945 |
| U-286 | VIIC | November 5, 1944 - February 28, 1945 |
| U-288 | VIIC | February 1, 1944 - April 3, 1944 |
| U-289 | VIIC | May 1, 1944 - May 31, 1944 |
| U-293 | VIIC/41 | September 5, 1944 - May 8, 1945 |
| U-294 | VIIC/41 | November 6, 1944 - February 28, 1945 |
| U-295 | VIIC/41 | October 1, 1944 - March 31, 1945 |
| U-299 | VIIC/41 | November 5, 1944 - February 28, 1945 |
| U-302 | VIIC | June 1, 1943 - October 31, 1943 |
| U-307 | VIIC | November 1, 1943 - April 29, 1945 |
| U-310 | VIIC | September 5, 1944 - May 8, 1945 |
| U-312 | VIIC | September 1, 1944 - May 8, 1945 |
| U-313 | VIIC | September 15, 1944 - May 8, 1945 |
| U-315 | VIIC | September 15, 1944 - May 8, 1945 |
| U-318 | VIIC/41 | November 5, 1944 - February 28, 1945 |
| U-354 | VIIC | June 1, 1943 - August 24, 1944 |
| U-360 | VIIC | July 1, 1943 - April 2, 1944 |
| U-362 | VIIC | March 1, 1944 - September 5, 1944 |
| U-363 | VIIC | September 15, 1944 - May 8, 1945 |
| U-365 | VIIC | June 9, 1944 - December 13, 1944 |
| U-366 | VIIC | March 1, 1944 - March 5, 1944 |
| U-387 | VIIC | November 1, 1943 - December 9, 1944 |
| U-425 | VIIC | September 15, 1944 - February 17, 1945 |
| U-427 | VIIC | November 5, 1944 - February 28, 1945 |
| U-586 | VIIC | June 1, 1943 - September 30, 1943 |
| U-601 | VIIC | June 1, 1943 - February 25, 1944 |
| U-622 | VIIC | June 1, 1943 - July 24, 1943 |
| U-625 | VIIC | June 1, 1943 - October 31, 1943 |
| U-636 | VIIC | November 1, 1943 - April 21, 1945 |
| U-639 | VIIC | June 1, 1943 - August 28, 1943 |
| U-668 | VIIC | June 1, 1944 - May 8, 1945 |
| U-673 | VIIC | June 21, 1944 - July 31, 1944 |
| U-703 | VIIC | June 1, 1943 - September 16, 1944 |
| U-711 | VIIC | June 1, 1943 - May 4, 1945 |
| U-713 | VIIC | November 1, 1943 - February 24, 1944 |
| U-716 | VIIC | October 1, 1944 - March 31, 1945 |
| U-737 | VIIC | July 1, 1943 - December 19, 1944 |
| U-739 | VIIC | January 1, 1944 - May 8, 1945 |
| U-742 | VIIC | June 1, 1944 - July 18, 1944 |
| U-771 | VIIC | October 1, 1944 - November 11, 1944 |
| U-921 | VIIC | June 1, 1944 - October 2, 1944 |
| U-956 | VIIC | October 1, 1944 - May 8, 1945 |
| U-957 | VIIC | October 1, 1944 - October 21, 1944 |
| U-959 | VIIC | March 1, 1944 - May 2, 1944 |
| U-965 | VIIC | October 1, 1944 - March 30, 1945 |
| U-968 | VIIC | March 1, 1944 - May 8, 1945 |
| U-992 | VIIC | October 1, 1944 - May 8, 1945 |
| U-994 | VIIC | November 5, 1944 - May 8, 1945 |
| U-995 | VIIC/41 | June 1, 1944 - February 28, 1945 |
| U-997 | VIIC/41 | June 1, 1944 - March 1, 1945 |
| U-1163 | VIIC/41 | October 1, 1944 - May 8, 1945 |