Kapitänleutnant (Crew 31)
5 ships sunk, total tonnage 26,296 GRT
1 auxiliary warship sunk, total tonnage 4,724 GRT
|Born||13 Feb 1912||Dessau|
|Died||20 Aug 1940||(28)||Bay of Biscay|
|U-53||24 Jun 1939||Aug, 1939||No war patrols|
|U-51||15 Jan 1940||20 Aug 1940 (+)||4 patrols (108 days)|
On 24 June 1939 he commissioned the new type VIIB boat U-53. He left the boat in August 1939 to take command of the U-51 of the same type. With this boat he first went out on patrol on 17 Jan 1940. During this patrol he sank 2 small ships with a total of 3,100 tons.
This was to be his first of 4 war patrols, spending 108 days at sea. Kplt. Dietrich Knorr sank 6 ships for over 31,000 tons during these missions, the last ship was sunk just 5 days before the loss of U-51.
On 20 Aug 1940 the U-51 was inbound for France in the Bay of Biscay west of Nantes, France, in position 47.06N, 04.51W, when she was sunk by a torpedo from the British submarine HMS Cachalot, 43 dead, all hands lost (Niestlé, 1998).
Busch, R. and Röll, H-J. (1998). German U-boat commanders of World War II.
Busch, R. and Röll, H-J. (1997). Der U-Bootkrieg 1939-1945 (Band 2).
Niestlé, A. (1998). German U-boat losses during World War II.
Patrol info for Dietrich Knorr
|1.||U-51||17 Jan 1940||Kiel||8 Feb 1940||Wilhelmshaven||Patrol 1,||23 days|
|2.||U-51||11 Mar 1940||Wilhelmshaven||22 Apr 1940||Kiel||Patrol 2,||43 days|
|3.||U-51||6 Jun 1940||Kiel||5 Jul 1940||Kiel||Patrol 3,||30 days|
|4.||U-51||9 Aug 1940||Kiel||20 Aug 1940||Sunk||Patrol 4,||12 days|
|4 patrols, 108 days at sea|
Ships hit by Dietrich Knorr
|Date||U-boat||Name of ship||Tons||Nat.||Convoy|
|22 Jan 1940||U-51||Gothia||1,640||sw|
|29 Jan 1940||U-51||Eika||1,503||nw|
|25 Jun 1940||U-51||Windsorwood||5,395||br||OA-172|
|25 Jun 1940||U-51||Saranac||12,049||br||OA-172|
|29 Jun 1940||U-51||HMS Willamette Valley (X 39)||4,724||br|
|15 Aug 1940||U-51||Sylvafield||5,709||br||HX-62|
6 ships sunk (31,020 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.