| Born | 15 Jan, 1915 | Pahlen, Nord-Ditmarschen |
| Died | 4 Jun, 1943 | west of Gibraltar |
|
Ranks
Decorations |
U-boat Commands
| U-52 | 16 Jan, 1942 | - | 24 Jul, 1942 | No war patrols |
| U-594 | 25 Jul, 1942 | - | 4 Jun, 1943 (+) | 4 patrols (143 days) |
Patrol info
| U-boat | Departure | Arrival | |||||
| 1. | U-594 | 4 Aug, 1942 | St. Nazaire | 28 Sep, 1942 | St. Nazaire | Patrol, | 56 days |
| 2. | U-594 | 30 Dec, 1942 | St. Nazaire | 18 Feb, 1943 | St. Nazaire | Patrol, | 51 days |
| 3. | U-594 | 23 Mar, 1943 | St. Nazaire | 14 Apr, 1943 | St. Nazaire | Patrol, | 23 days |
| 4. | U-594 | 23 May, 1943 | St. Nazaire | 4 Jun, 1943 | Sunk | Patrol, | 13 days |
| 4 patrols, 143 days at sea | |||||||
Ships hit by Friedrich Mumm
| Date | Boat | Name of ship | Tons | Nat. | Convoy | Fate * | |
| 13 Sep, 1942 | U-594 | Stone Street | 6.131 |  | pa | ON-127 | |
| 26 Jan, 1943 | U-594 | Kollbjørg | 8.259 |  | nw | HX-223 | |
| 14.390 | |||||||
* Unless otherwise noted the ships listed here were sunk. | |||||||
 Last Voyage, The Amborski, Leonard E. Buy this title at amazon.co.uk See more sellers |
Books dealing with this subject include: The Last Voyage, Amborski, Leonard E., 2001 |
Decorations and ranks information is in many cases not complete. If you can help on any of those missing that would be great.