| Born | 24 Jul 1920 | Hagen | |
| Died | 30 Aug 1943 | (23) | North Atlantic |
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Ranks
Decorations
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U-boat Commands
| U-boat | From | To | |
| U-634 | 28 Jan 1943 | 30 Aug 1943 (+) | 3 patrols (153 days) |
Personal information
Dahlhaus went through training from July 1939 to May 1941 when he was assigned to the new U-753 being built. He served as a Watch Officer for 18 months from June 1941 to Dec 1942. Dahlhaus went through U-boat commander training until Jan 1943 when he took command of U-634 on 28 Jan.
Youngest U-boat commander
When Dahlhaus took his U-634 out from Bergen, Norway on 18 Feb 1943 he was the youngest German U-boat commander at the time, only 22 years old (see the final list). He was already an experienced U-boat officer at this time. His first command came at a time when the German U-boats were being sunk at an alarming rate but he brought his boat back from two patrols before being sunk with all hands on his third patrol.
Sources
Blair, C. (1998). Hitler's U-boat War, vol 2
Busch, R., Röll, H-J. (1999). German U-boat Commanders of WWII
Patrol info for Eberhard Dahlhaus
| U-boat | Departure | Arrival | ||||||
| 1. | U-634 | 9 Feb 1943 | Kiel | 13 Feb 1943 | Bergen | 5 days | ||
| 2. | U-634 | 18 Feb 1943 | Bergen | 23 Mar 1943 | Lorient | Patrol 1, | 34 days | |
| 3. | U-634 | 15 Apr 1943 | Lorient | 23 May 1943 | Brest | Patrol 2, | 39 days | |
| 4. | U-634 | 12 Jun 1943 | Brest | 30 Aug 1943 | Sunk | Patrol 3, | 80 days | |
| 3 patrols, 153 days at sea | ||||||||
Ships hit by Eberhard Dahlhaus
| Date | U-boat | Name of ship | Tons | Nat. | Convoy | ||
|---|---|---|---|---|---|---|---|
| 2 Mar 1943 | U-634 | Meriwether Lewis | 7,176 |  | am | HX-227 | |
| 7,176 | |||||||
1 ship sunk (7,176 tons). | |||||||
About ranks and decorations
Ranks shown in italics are our database inserts based on the rank dates of his crew comrades. The officers of each crew would normally have progressed through the lower ranks at the same rate.