| Born | 14 Jun, 1903 | Tuchel, West Prussia |
| Died | 29 Sep, 1955 |
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Ranks
Decorations
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U-boat Commands
| U-28 | 12 Sep, 1936 | - | 1 Nov, 1938 | No war patrols |
| U-21 | 1937 | - | 1937 | No war patrols |
| U-43 | 26 Aug, 1939 | - | 20 Oct, 1940 | 5 patrols (181 days) |
Patrol info
| U-boat | Departure | Arrival | |||||
| 1. | U-43 | 6 Nov, 1939 | Wilhelmshaven | 14 Dec, 1939 | Wilhelmshaven | Patrol, | 39 days |
| 2. | U-43 | 13 Mar, 1940 | Wilhelmshaven | 6 Apr, 1940 | Wilhelmshaven | Patrol, | 25 days |
| 3. | U-43 | 12 Apr, 1940 | Wilhelmshaven | 23 Apr, 1940 | Wilhelmshaven | Patrol, | 12 days |
| 4. | U-43 | 13 May, 1940 | Wilhelmshaven | 22 Jul, 1940 | Wilhelmshaven | Patrol, | 71 days |
| 5. | U-43 | 9 Sep, 1940 | Wilhelmshaven | 12 Sep, 1940 | Bergen | 4 days | |
| 6. | U-43 | 15 Sep, 1940 | Bergen | 18 Oct, 1940 | Lorient | Patrol, | 34 days |
| 5 patrols, 181 days at sea | |||||||
Ships hit by Wilhelm Ambrosius
| Date | Boat | Name of ship | Tons | Nat. | Convoy | Fate * | |
| 16 Nov, 1939 | U-43 | Arlington Court | 4.915 |  | br | SL-7A | |
| 22 Nov, 1939 | U-43 | Arijon | 4.374 |  | fr | 14-BS | |
| 25 Nov, 1939 | U-43 | Uskmouth | 2.483 | | br | ||
| 21 Jun, 1940 | U-43 | Yarraville | 8.627 | | br | 65-X | |
| 30 Jun, 1940 | U-43 | Avelona Star | 13.376 | | br | SL-36 | |
| 9 Jul, 1940 | U-43 | Aylesbury | 3.944 | | br | ||
| 17 Jul, 1940 | U-43 | Fellside | 3.509 | | br | OA-184 | |
| 25 Sep, 1940 | U-43 | Sulairia | 5.802 | | br | OB-217 | |
| 47.030 | |||||||
* Unless otherwise noted the ships listed here were sunk. | |||||||
Special thanks to Fernando Almeida for data on ranks and decorations.