| Horst Hamm | |
| Birth Date: | 17 March 1916 |
| Birth Place: | Düsseldorf, German Empire |
| Death Place: | Mediterranean Sea |
| Serviceyears: | 1935–43 |
| Rank: | Kapitänleutnant |
| Commands: | |
| Battles: | World War II |
Horst Hamm (17 March 1916 – 19 February 1943) was a German U-boat commander[1] in World War II.
Horst Hamm joined the Kriegsmarine (German navy) in 1935. From August 1939 to May 1940 he served as the Second Watch Officer (2WO) on the spending 120 days at sea on four patrols. From June to August 1940 he served with the 1st U-boat Flotilla before being sent as First Watch Officer on the famous in September. With the U-96 Hamm went out on three patrols spending 70 days at sea. On his first patrol with this boat they sank five ships (37,037 GRT) and damaged two more (15,864). The second patrol was also successful but the third patrol saw the boat sink 7 ships with a total of 45,391 GRT. 190 days at sea during 7 patrols on two U-boats under very competent Commanders gave Hamm invaluable experience for his own command. He got his own boat on 7 April 1941 when he took command of the small school boat for 5 months. Hamm got his second boat, the larger, on 4 September 1941. Hamm would take his U-562 out on eight patrols, 241 days at sea, from September 1941. During this time he sank six ships with a total of 37,287 GRT and damaged one merchant of 3,359 GRT. On 27 November 1941 U-562 passed the dangerous Straits of Gibraltar into the Mediterranean.[2] The boat thus left the Atlantic for good, having completed one patrol there. Hamm and his entire crew of 49 men died when the U-562 was sunk in the Mediterranean north-east of Benghazi, Libya by depth charges from the British destroyer, the British escort destroyer and a British Wellington aircraft.
| Date | U-boat | Name of ship | Nationality | Tonnage | Fate | |
|---|---|---|---|---|---|---|
| 22 September 1941 | U-562 | Erna III |  United Kingdom | 1,590 | Sunk | |
| 2 October 1941 | U-562 | Empire Wave | United Kingdom | 7,463 | Sunk | |
| 2 December 1941 | U-562 | Grelhead | United Kingdom | 4,274 | Sunk | |
| 29 April 1942 | U-562 | Alliance | United Kingdom | 81 | Sunk | |
| 14 July 1942 | U-562 | Adinda |  Netherlands | 3,359 | Damaged | |
| 21 December 1942 | U-562 | Strathallan | United Kingdom | 23,722 | Sunk |