U-Boat Operations

Operations information for U-73
08.02.1941 - 02.03.1941 First Sailing - active patrol U-73 left Helgoland under the command of Helmut Rosenbaum on 8th Feb 1941 and arrived at Lorient on 2nd Mar 1941 after just over three weeks. Helmut Rosenbaum hit one ship on this patrol from convoy OB-288. On 24th Feb 1941 he sank the British 4,260 ton Waynegate, sailing with convoy OB-288.
25.03.1941 - 24.04.1941 Second Sailing - active patrol On the 25th Mar 1941, U-73 left Lorient under the command of Helmut Rosenbaum and after over four weeks arrived at St. Nazaire on 24th Apr 1941. Helmut Rosenbaum hit five ships on this patrol, four of these ships were in convoy, all of them from convoy SC-26. On 3rd Apr 1941 he sank the British 4,313 ton Alderpool, a member of convoy SC-26. On 3rd Apr 1941 he sank the Belgian 5,409 ton Indier, part of convoy SC-26. On 3rd Apr 1941 he sank the British 5,724 ton Westpool, from convoy SC-26. On 3rd Apr 1941 he sank the British 6,895 ton British Viscount, sailing with convoy SC-26. On 20th Apr 1941 he sank the British 8,570 ton Empire Endurance. U-73 caused the loss of 2 vessels during this patrol that were being shipped: HMS ML 1003 (46 tons) was being carried by Empire Endurance. HMS ML 1037 (46 tons) was being carried by Empire Endurance.
20.05.1941 - 24.06.1941 Third Sailing - active patrol U-73 departed under Helmut Rosenbaum from St. Nazaire on 20th May 1941 and arrived back at St. Nazaire on 24th Jun 1941 after five weeks on patrol.
29.07.1941 - 02.08.1941 Fourth Sailing U-73 left St. Nazaire under the command of Helmut Rosenbaum on 29th Jul 1941 and returned four days later to St. Nazaire on 2nd Aug 1941.
07.08.1941 - 07.09.1941 Fifth Sailing - active patrol On the 7th Aug 1941, U-73 left St. Nazaire under the command of Helmut Rosenbaum and arrived back at St. Nazaire four and a half weeks later on 7th Sep 1941.
11.10.1941 - 11.11.1941 Sixth Sailing - active patrol U-73 departed under Helmut Rosenbaum from St. Nazaire on 11th Oct 1941 and returned to St. Nazaire on 11th Nov 1941 after four and a half weeks on patrol.
04.01.1942 - 12.02.1942 Seventh Sailing - active patrol U-73 left St. Nazaire under the command of Helmut Rosenbaum on 4th Jan 1942 and arrived at La Spezia on 12th Feb 1942 after five and a half weeks.
16.03.1942 - 26.03.1942 Eighth Sailing - active patrol On the 16th Mar 1942, U-73 left La Spezia under the command of Helmut Rosenbaum and returned one and a half weeks later to La Spezia on 26th Mar 1942.
04.08.1942 - 05.09.1942 Ninth Sailing - active patrol U-73 departed under Helmut Rosenbaum from La Spezia on 4th Aug 1942 and arrived back at La Spezia four and a half weeks later on 5th Sep 1942. Helmut Rosenbaum hit one ship on this patrol from convoy WS-21S. On 11th Aug 1942 he sank the British 22,600 ton HMS Eagle, a member of convoy WS-21S.
20.10.1942 - 19.11.1942 Tenth Sailing - active patrol U-73 left La Spezia under the command of Horst Deckert on 20th Oct 1942 and returned to La Spezia on 19th Nov 1942 after over four weeks on patrol. Horst Deckert hit one ship on this patrol from convoy Torch. On 14th Nov 1942 he damaged the British 7,453 ton Lalande, part of convoy Torch.
01.12.1942 - 08.12.1942 Eleventh Sailing - active patrol On the 1st Dec 1942, U-73 left La Spezia under the command of Horst Deckert and arrived back at La Spezia on 8th Dec 1942 after one week on patrol.
22.12.1942 - 13.01.1943 Twelfth Sailing - active patrol U-73 departed under Horst Deckert from La Spezia on 22nd Dec 1942 and returned just over three weeks later to La Spezia on 13th Jan 1943. At 0100 HRS on 10th Jan 1943 in square CH 81, U-73 came under attack from an unidentified aircraft. U-73 was not damaged by the attack. Horst Deckert hit one ship on this patrol from convoy UGS-3. On 1st Jan 1943 he sank the American 7,176 ton Arthur Middleton, from convoy UGS-3. U-73 caused the loss of 1 vessel during this patrol that was being shipped: USS LCT-21 (255 tons) was being carried by Arthur Middleton.
12.06.1943 - 01.07.1943 Thirteenth Sailing - active patrol U-73 left La Spezia under the command of Horst Deckert on 12th Jun 1943 and arrived at Toulon on 1st Jul 1943 after more than two weeks. At 2118 HRS on 14th Jun 1943 in square CH 65, U-73 came under attack from an unidentified aircraft. Horst Deckert hit two ships on this patrol and both of them were in convoy: One was from convoy TE-22 and one was from convoy XTG-2. On 21st Jun 1943 he sank the British 1,598 ton Brinkburn, sailing with convoy TE-22. On 27th Jun 1943 he damaged the British 8,299 ton Abbeydale, a member of convoy XTG-2.
02.08.1943 - 29.08.1943 Fourteenth Sailing - active patrol On the 2nd Aug 1943, U-73 left Toulon under the command of Horst Deckert and returned to Toulon on 29th Aug 1943 after nearly four weeks on patrol.
05.10.1943 - 30.10.1943 Fifteenth Sailing - active patrol U-73 departed under Horst Deckert from Toulon on 5th Oct 1943 and arrived back at Toulon on 30th Oct 1943 after three and a half weeks on patrol.
04.12.1943 - 16.12.1943 Sixteenth Sailing - active patrol U-73 left Toulon under the command of Horst Deckert on 4th Dec 1943. The boat was lost on 16th Dec 1943. Horst Deckert hit one ship on this patrol from convoy GUS-24. On 16th Dec 1943 he damaged the American 7,176 ton John S Copley, part of convoy GUS-24.

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