| Born | 12 Jan 1911 | Berlin |
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Ranks
Decorations |
U-boat Commands
| U-boat | From | To | |
| U-455 | 21 Aug 1941 | 22 Nov 1942 | 4 patrols (185 days) |
Personal information
When Giessler left U-455 he served at the Torpedo Inspectorate from Dec 1942 to Oct 1944. He then joined the Ministry of Armaments and War Production under Speer in Nov 1944. In Feb 1945 Giessler became First Officer on the destroyer Z 10 Karl Galster until the end of the war in May 1945 (Busch & Röll, 1998).
Sources
Busch, R & Röll, H-J. (1998). German U-boat commanders of World War II.
Patrol info for Hans-Heinrich Giessler
| U-boat | Departure | Arrival | ||||||
| 1. | U-455 | 15 Jan 1942 | Kiel | 28 Feb 1942 | Bergen | Patrol 1, | 45 days | |
| 2. | U-455 | 21 Mar 1942 | Bergen | 30 Mar 1942 | St. Nazaire | Patrol 2, | 10 days | |
| 3. | U-455 | 16 Apr 1942 | St. Nazaire | 16 Jun 1942 | St. Nazaire | Patrol 3, | 62 days | |
| 4. | U-455 | 22 Aug 1942 | St. Nazaire | 28 Oct 1942 | St. Nazaire | Patrol 4, | 68 days | |
| 4 patrols, 185 days at sea | ||||||||
Ships hit by Hans-Heinrich Giessler
| Date | Boat | Name of ship | Tons | Nat. | Convoy | Fate * | |
| 3 May, 1942 | U-455 | British Workman | 6,994 |  | br | ON-89 | |
| 11 Jun, 1942 | U-455 | Geo H. Jones | 6,914 | | br | SL-111 | |
| 13,908 | |||||||
* Unless otherwise noted the ships listed here were sunk. | |||||||
Decorations and ranks information is in many cases not complete. If you can help on any of those missing that would be great.