Wolfpacks (German: U-Boot-Gruppe) were employed by Nazi Germany's Kriegsmarine during World War II against Allied and neutral shipping.
From the outbreak of war until mid-1940 there were various groups of U-boats engaged in collective patrols. With the exception of experimental Hartmann's wolfpack in 1939, the first recognised wolfpack was led by KrvKpt Günther Prien in June 1940.
In preparation for the impending invasion of Norway and Denmark, in early April 1940, 31 U-boats were ready for operations between England and Norway. On 6 April, the codeword "Hartmut" was transmitted and German submarines began their designated operations.
| Name | From | To | Boats | Ships Sunk | Ships Damaged | Boats Lost | Notes |
|---|---|---|---|---|---|---|---|
| Hartmann | Oct 1939 | Apr 1940 | 6 | 7 | 0 | 3 | Atlantic Ocean vs convoys KJF.3 and HG.3. Comprised U-37, U-40 (lost), U-42 (lost), U-45 (lost), U-46 and U-48. The name Hartmann was not an official codename. |
| Prien | 12 Jun 1940 | 17 Jun 1940 | 7 | 5 | 0 | 0 | Atlantic Ocean vs convoys HX.47 and HX.48. Comprised U-25, U-28, U-30, U-32, U-38, U-47 and U-51. Sank the British tanker San Fernando (U-47), the Norwegian tanker Eli Knudsen (U-32) and the Norwegian Randsfjord (U-30). |
| Rösing | 12 Jun 1940 | 15 Jun 1940 | 5 | 4 | 0 | 0 | Atlantic Ocean off northwest Spain vs convoys SL.34 and US.3. Comprised U-29, U-43, U-46, U-48 and U-101. |
| West | 8 May 1941 | 20 Jun 1941 | 23 | 33 | 4 | 1 | Two-part operation in the Atlantic Ocean vs convoys HX.126, HX.128, OB.317, OB.318, OB.322, OB.327, OB.328, OB.329, OB.330 and SC.30. Comprised, at times, U-43, U-46, U-48, U-66, U-73, U-74, U-75, U-77, U-93, U-94, U-97, U-98, U-101, U-108, U-109, U-110 (lost), U-111, U-201, U-204, U-553, U-556, U-557 and U-751. |
| Kurfürst | 16 Jun 1941 | 20 Jun 1941 | 5 | 1 | 0 | 0 | Atlantic Ocean vs convoy SL.76. Comprised U-43, U-73, U-201, U-204 and U-371. |
| Süd | 22 Jul 1941 | 5 Aug 1941 | 4 | 0 | 0 | 0 | Atlantic Ocean, off the northwest coast of Africa. Comprised U-93, U-94, U-109 and U-124. |
| Hammer | 5 Aug 1941 | 12 Aug 1941 | 3 | 0 | 0 | 0 | Atlantic Ocean, off the southwestern approaches to the UK. Comprised U-96, U-105 and U-751. |
| Grönland | 10 Aug 1941 | 27 Aug 1941 | 21 | 3 | 1 | 0 | Atlantic Ocean vs convoy ON.4. Comprised U-38, U-43, U-71, U-73, U-77, U-82, U-84, U-96, U-101, U-105, U-129, U-202, U-206, U-501, U-553, U-563, U-567, U-568, U-569, U-652 and U-751. Sank the HMS Picotee (U-568) and damaged the British auxiliary minelayer HMS Southern Prince (U-652). |
| Kurfürst II | 23 Aug 1941 | 2 Sep 1941 | 7 | 0 | 0 | 0 | Atlantic Ocean vs convoy OG.73. Comprised U-77, U-96, U-206, U-553, U-563, U-567 and U-568. |
| Markgraf | 27 Aug 1941 | 16 Sep 1941 | 15 | 17 | 4 | 2 | Atlantic Ocean vs convoys ON.10, ON.11 and SC.42. Comprised U-38, U-43, U-81, U-82, U-84, U-85, U-105, U-202, U-207 (lost), U-432, U-433, U-501 (lost), U-569 and U-652. |
| Bosemüller | 28 Aug 1941 | 2 Sep 1941 | 8 | 1 | 0 | 0 | Atlantic Ocean vs convoys SL.84 and OG.73. Comprised U-71, U-83, U-95, U-557, U-558, U-561, U-562 and U-751. |
| Seewolf | 2 Sep 1941 | 15 Sep 1941 | 17 | 5 | 0 | 0 | Atlantic Ocean vs convoy ON.14 and/or convoy OG.73. Comprised U-69, U-71, U-77, U-83, U-94, U-95, U-96, U-98, U-206, U-553, U-557, U-558, U-561, U-563, U-567, U-568 and U-751. |
| Brandenburg | 15 Sep 1941 | 2 Oct 1941 | 11 | 11 | 0 | 0 | Atlantic Ocean vs convoys ON.14, SC.42, SC.44 and ON.16. Comprised U-69, U-74, U-94, U-372, U-373, U-431, U-552, U-562, U-564, U-572, U-575. Sank the corvette HMCS Lévis (U-74) and 10 merchant ships. |
| Goeben | 16 Sep 1941 | 5 Oct 1941 | 6 | 0 | 0 | 0 | Mediterranean Sea via the Strait of Gibraltar. Comprised U-75, U-79, U-97, U-331, U-371 and U-559. |
| Breslau | 2 Oct 1941 | 29 Oct 1941 | 6 | 9 | 1 | 1 | Atlantic Ocean vs convoys OG.75 and HG.75. Comprised U-71, U-83, U-204 (lost), U-206, U-563, and U-564. Sank the British destroyer HMS Cossack (U-563) and corvette HMS Fleur de Lys (U-206); damaged the merchant ship Ariguani. |
| Mordbrenner | 16 Oct 1941 | 3 Nov 1941 | 4 | 2 | 0 | 0 | Off Newfoundland vs convoys including ON.27 and SC.52. Comprised U-105, U-208, U-374 and U-573. |
| Schlagetot | 20 Oct 1941 | 1 Nov 1941 | 9 | 2 | 1 | 0 | Atlantic Ocean vs convoy SL.89. Comprised U-38, U-82, U-84, U-85, U-93, U-123, U-202, U-203 and U-569. Damaged the armed merchant cruiser RMS Aurania (U-123). |
| Reissewolf | 21 Oct 1941 | 31 Oct 1941 | 7 | 1 | 0 | 0 | North Atlantic Ocean vs convoy HG.75. Comprised U-73, U-77, U-101, U-432, U-502, U-568 and U-751. |
| Stosstrupp | 30 Oct 1941 | 4 Nov 1941 | 6 | 2 | 0 | 0 | Atlantic Ocean vs convoys OS.10 and HX.156. Comprised U-96, U-133, U-552, U-567, U-571 and U-577. Sank the US destroyer USS Reuben James (U-552). |
| Raubritter | 1 Nov 1941 | 17 Nov 1941 | 14 | 4 | 0 | 0 | Atlantic Ocean off Newfoundland vs convoy SC.52. Comprised U-38, U-74, U-82, U-84, U-85, U-93, U-106, U-123, U-133, U-202, U-203, U-569, U-571 and U-577. |
| Arnauld | 5 Nov 1941 | 18 Nov 1941 | 4 | 1 | 0 | 1 | Individual U-boats from the Atlantic into the Mediterranean through the Strait of Gibraltar; U-81, U-205, U-433 (lost) and U-565. Sank the British HMS Ark Royal. |
| Störtebecker | 5 Nov 1941 | 2 Dec 1941 | 19 | 0 | 0 | 0 | Atlantic Ocean vs OS.11. Comprised U-69, U-77, U-85, U-96, U-98, U-103, U-107, U-123, U-133, U-201, U-332, U-372, U-373, U-402, U-552, U-567, U-571, U-572 and U-577. |
| Steuben | 14 Nov 1941 | 2 Dec 1941 | 6 | 3 | 0 | 0 | Atlantic Ocean, off the Cape Race area of Newfoundland, vs Allied convoys including OS.12. Comprised U-43, U-105, U-372, U-434, U-574 and U-575. |
| Benecke | 19 Nov 1941 | 2 Dec 1941 | 4 | 0 | 0 | 0 | Atlantic Ocean vs OG-series convoys. Comprised U-96, U-332, U-402 and U-552. |
| Gödecke | 19 Nov 1941 | 26 Nov 1941 | 4 | 0 | 0 | 0 | Atlantic Ocean, along with the Benecke and Störtebecker wolfpacks, vs OG.77. Comprised U-69, U-98, U-201 and U-572. |
| Letzte Ritter | 25 Nov 1941 | 4 Dec 1941 | 3 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-69, U-201 and U-402. |
| Seeräuber | 14 Dec 1941 | 23 Dec 1941 | 8 | 3 | 0 | 4 | Atlantic Ocean vs convoy HG.76. Comprised U-67, U-71, U-107, U-108, U-125, U-127, U-131, U-434, U-567 and U-574. |
| Ulan | 25 Dec 1941 | 19 Jan 1942 | 3 | 4 | 1 | 0 | Norwegian Sea vs convoys PQ.7A, PQ.7B and PQ.8. Comprised U-134, U-454 and U-584. Sank the British destroyer HMS Matabele (U-454) and Soviet submarine M-175. |
| Seydlitz | 27 Dec 1941 | 16 Jan 1942 | 7 | 0 | 0 | 1 | Atlantic Ocean vs HG.78. Comprised U-71, U-84, U-93 (lost), U-203, U-373, U-552 and U-571. |
| Zieten | 6 Jan 1942 | 22 Jan 1942 | 12 | 11 | 3 | 0 | Atlantic Ocean, off Newfoundland, vs convoys SC.62, ON.52, SC.63 and ON.53. Comprised U-84, U-86, U-87, U-135, U-203, U-333, U-552, U-553, U-582, U-654, U-701 and U-754. |
| Siegfried | 11 Jan 1942 | 16 Jan 1942 | 3 | 0 | 0 | 0 | Central part of the North Atlantic Ocean vs convoys ON.207 and HX.262. Comprised U-71, U-93 and U-571. |
| Robbe | 15 Jan 1942 | 24 Jan 1942 | 4 | 1 | 0 | 0 | UK/Iceland gap vs convoy SC.63. Comprised U-94, U-582, U-587 and U-588. Sank the Greek Dimitrios G. Themiotis and British Caledonian Monarch. |
| Schlei | 16 Jan 1942 | 12 Feb 1942 | 7 | 3 | 0 | 0 | Norwegian Sea and UK/Iceland gap vs convoys ON.63 and SC.67. Comprised U-136, U-212, U-404, U-578, U-591, U-656 and U-753. Two of the three ships sunk were corvettes - British HMS Arbutus (U-136) and Canadian HMCS Spikenard (U-136) - and the third the Norwegian transport Heina. |
| Hecht | 27 Jan 1942 | 4 Feb 1942 | 3 | 0 | 0 | 0 | UK/Iceland gap. Comprised U-352, U-435 and U-455. |
| Umbau | 4 Feb 1942 | 16 Feb 1942 | 4 | 0 | 0 | 0 | Norwegian Sea. Comprised U-134, U-435, U-436 and U-456. |
| Neuland | 16 Feb 1942 | 18 Mar 1942 | ? | ? | ? | ? | Caribbean Sea; used single boats rather than wolfpacks against Allied shipping, especially oil tankers and aluminum ore transport vessels. |
| Westwall | 2 Mar 1942 | 12 Mar 1942 | 8 | 5 | 0 | 0 | Atlantic Ocean, west of the British Isles. Comprised U-87, U-135, U-212, U-553, U-569, U-701, U-752 and U-753. |
| (No Name) | 7 Mar 1942 | 11 Mar 1942 | 4 | 0 | 0 | 0 | |
| Umhang | 10 Mar 1942 | 16 Mar 1942 | 3 | 0 | 0 | 0 | North coast of Norway. Comprised U-436, U-454 and U-456. |
| Blücher | 11 Mar 1942 | 18 Mar 1942 | 3 | 0 | 0 | 0 | West coast of Norway. Comprised U-377, U-403 and U-589. |
| Wrangel | 11 Mar 1942 | 18 Mar 1942 | 2 | 0 | 0 | 0 | Off Norway. Comprised only U-405 and U-592. |
| York | 12 Mar 1942 | 26 Mar 1942 | 4 | 0 | 0 | 0 | Norwegian Sea. Comprised U-135, U-553, U-569 and U-701. |
| Zieten II | 23 Mar 1942 | 29 Mar 1942 | 4 | 0 | 0 | 1 | Off the north coast of Norway. Comprised U-209, U-376, U-378 and U-655 (lost). |
| Eiswolf | 28 Mar 1942 | 31 Mar 1942 | 8 | 2 | 1 | 1 | Arctic Ocean vs convoy PQ.13. Comprised U-209, U-376, U-378, U-435, U-454, U-456, U-585 (lost) and U-589. |
| Naseweis | 31 Mar 1942 | 10 Apr 1942 | 3 | 0 | 0 | 0 | Arctic Ocean in the area bounded by Iceland, Greenland and the Svalbard islands group. Comprised U-334, U-592 and U-667. |
| Bums | 6 Apr 1942 | 14 Apr 1942 | 6 | 0 | 0 | 0 | Northwest coast of Norway. Comprised U-334, U-377, U-403, U-589, U-591 and U-592. |
| Robbenschlag | 7 Apr 1942 | 14 Apr 1942 | 8 | 3 | 0 | 0 | Arctic Ocean off the north coast of Norway vs convoys QP.10 and PQ.14. Comprised U-209, U-376, U-378, U-435, U-436, U-454, U-456 and U-589. |
| Blutrausch | 15 Apr 1942 | 19 Apr 1942 | 10 | 1 | 0 | 0 | Norway vs convoy PQ.14. Comprised U-209, U-376, U-377, U-378, U-403, U-436, U-454, U-456, U-589 and U-592. |
| Strauchritter | 29 Apr 1942 | 5 May 1942 | 9 | 1 | 2 | 0 | Off the north coast of Norway vs convoys QP.11 and PQ.15. Comprised U-88, U-251, U-376, U-378, U-405, U-436, U-456, U-589 and U-703. |
| Hecht II | 8 May 1942 | 18 Jun 1942 | 9 | 14 | 1 | 0 | Atlantic Ocean vs convoys ON.92, ONS.100, ONS.102 plus two other ON-series. Comprised U-94, U-96, U-116, U-124, U-404, U-406, U-569, U-578 and U-590. |
| Greif | 14 May 1942 | 29 May 1942 | 6 | 1 | 0 | 0 | North coast of Norway vs convoys PQ.16 and QP.12. Comprised U-209, U-436, U-582, U-589, U-591 and U-703. |
| Pfadfinder | 21 May 1942 | 27 May 1942 | 8 | 2 | 0 | 0 | Off the east coast of Canada. Comprised U-135, U-212, U-404, U-432, U-455, U-553, U-566, U-578 and U-653. |
| Endraß | 12 Jun 1942 | 17 Jun 1942 | 9 | 5 | 0 | 0 | Atlantic Ocean vs convoy HG.84. Comprised U-71, U-84, U-89, U-132, U-134, U-437, U-552, U-571 and U-575. |
| Eisteufel | 21 Jun 1942 | 12 Jul 1942 | 11 | 13 | 0 | 0 | Norwegian Sea and Arctic Ocean, in conjunction with Operation Rösselsprung vs convoy PQ.17. Comprised U-88, U-251, U-255, U-334, U-355, U-376, U-408, U-456, U-457 and U-657. |
| Hai | 3 Jul 1942 | 21 Jul 1942 | 6 | 9 | 1 | 1 | Atlantic Ocean vs convoy OS.33. Comprised U-116, U-136 (lost), U-201, U-572, U-582 and U-752. |
| Wolf | 13 Jul 1942 | 1 Aug 1942 | 11 | 2 | 2 | 1 | Atlantic Ocean, vs convoys ON.111 and ON.113. Comprised U-43, U-71, U-86, U-90 (lost), U-379, U-454, U-461, U-552, U-597, U-607 and U-704. |
| Nebelkönig | 27 Jul 1942 | 14 Aug 1942 | 10 | 0 | 0 | 0 | Norwegian Sea and Arctic Ocean between Greenland and Norway. Comprised U-255, U-355, U-403, U-405, U-435, U-582, U-589, U-591, U-592 and U-657. |
| Pirat | 29 Jul 1942 | 3 Aug 1942 | 13 | 1 | 2 | 1 | Atlantic Ocean vs convoy ON.115. Comprised U-43, U-71, U-164, U-210, U-217, U-454, U-511, U-552, U-553, U-588 (lost), U-597, U-607 and U-704. |
| Steinbrock | 29 Jul 1932 | 3 Aug 1942 | 11 | 2 | 2 | 1 | Atlantic Ocean, in tandem with Pirat, vs convoy ONS.115. Comprised U-43, U-71, U-164, U-210 (lost), U-217, U-511, U-552, U-553, U-597, U-607 and U-704. |
| Steinbrinck | 3 Aug 1942 | 11 Aug 1942 | 14 | 11 | 3 | 2 | Atlantic Ocean vs convoy SC.94. Comprised U-71, U-176, U-210 (lost), U-256, U-379 (lost), U-454, U-552, U-593, U-595, U-597, U-605, U-607, U-660 and U-704. |
| Lohs | 11 Aug 1942 | 22 Sep 1942 | 19 | 8 | 0 | 1 | Atlantic Ocean vs convoys SC.95, ONS.122, and SC.100. Comprised U-135, U-174, U-176, U-216, U-256, U-259, U-373, U-410, U-432, U-438, U-462, U-569, U-593, U-596, U-599, U-605, U-660, U-705 (lost) and U-755. |
| Blücher | 14 Aug 1942 | 28 Aug 1942 | 8 | 6 | 1 | 0 | Atlantic Ocean vs convoys SL.118 and SL.119. Comprised U-107, U-214, U-333, U-406, U-566, U-590, U-594 and U-653. |
| Eisbär | 17 Oct 1942 | 13 Nov 1942 | 5 | 1 | 0 | 0 | Atlantic off the Iberian peninsula and Northwest Africa vs convoy SL.119. Comprised U-68, U-156, U-172, U-459 and U-504. |
| Vorwärts | 25 Aug 1942 | 26 Sep 1942 | 18 | 15 | 9 | 1 | Atlantic Ocean, in tandem with Stier, vs convoys SC.97, ON.127 and RB.1. Comprised U-91, U-92, U-211, U-218, U-380, U-404, U-407, U-409, U-411, U-461, U-584, U-594, U-604, U-608, U-609, U-659 and U-756 (lost). |
| Stier | 29 Aug 1942 | 2 Sep 1942 | 6 | 0 | 0 | 0 | Atlantic Ocean, in tandem with Vorwärts, vs convoy ON.127. Comprised U-96, U-380, U-404, U-584, U-594 and U-608. |
| Iltis | 25 Aug 1942 | 29 Aug 1942 | 4 | 2 | 0 | 0 | Atlantic Ocean, off the coast of northwest Africa vs convoy SL.119. Comprised U-107, U-214, U-406 and U-566. |
| Pfeil | 12 Sep 1942 | 22 Sep 1942 | 11 | 0 | 0 | 0 | Atlantic Ocean vs convoys SC.99 and ON.129. Comprised U-216, U-221, U-258, U-356, U-440, U-595, U-607, U-615, U-617, U-618 and U-661. |
| Trägertod | 12 Sep 1942 | 22 Sep 1942 | 10 | 4 | 1 | 3 | Arctic Ocean vs convoys PQ.18 and QP.14. Comprised U-88 (lost), U-377, U-378, U-403, U-405, U-408, U-457 (lost), U-589 (lost), U-592 and U-703. Sank the British destroyer HMS Somali (U-703). |
| Blitz | 22 Sep 1942 | 26 Sep 1942 | 19 | 7 | 0 | 0 | Atlantic Ocean vs convoys SC.100, ON.131 and RB.1. Comprised U-216, U-221, U-258, U-259, U-260, U-356, U-310, U-437, U-582, U-595, U-597, U-599, U-607, U-615, U-617, U-618, U-619, U-661 and U-755. |
| Tiger | 26 Sep 1942 | 30 Sep 1942 | 17 | 0 | 0 | 0 | Atlantic Ocean vs convoy ON.131. Comprised U-221, U-258, U-260, U-356, U-407, U-410, U-437, U-575, U-582, U-595, U-597, U-599, U-607, U-615, U-617, U-618 and U-755. |
| Luchs | 27 Sep 1942 | 6 Oct 1942 | 19 | 2 | 0 | 2 | Atlantic Ocean vs convoys SC.101 and HX.209. Comprised U-183, U-216, U-254, U-257, U-260, U-382, U-404, U-437, U-442, U-575, U-582 (lost), U-597, U-610, U-619 (lost), U-620, U-706, U-753 and U-755. |
| Letze Ritter II | 29 Sep 1942 | 1 Oct 1942 | 4 | 0 | 0 | 0 | Atlantic Ocean vs convoys associated with Operation Torch. Comprised U-216, U-404, U-410 and U-584. |
| Tümmler | 1 Oct 1942 | 11 Oct 1942 | 6 | 0 | 0 | 0 | Bay of Biscay, eastern part of the central Atlantic and western part of the Mediterranean. Comprised U-89, U-438, U-458, U-593, U-605 and U-660. |
| Wotan | 5 Oct 1942 | 19 Oct 1942 | 11 | 21 | 0 | 1 | Atlantic Ocean, in tandem with Leopard, vs convoys ON.135, ON.136, SC.104, and ON.137. Comprised U-118, U-216, U-221, U-258, U-356, U-410, U-599, U-607, U-615, U-618 and U-661 (lost). |
| Panther | 6 Oct 1942 | 20 Oct 1942 | 34 | 3 | 0 | 1 | Atlantic Ocean vs convoys SC.103, ONS.136 and ONS.137. Comprised U-71, U-84, U-89, U-132, U-183, U-254, U-260, U-301, U-353, U-381, U-382, U-402, U-437, U-438, U-441, U-442, U-443, U-454, U-518, U-563, U-571, U-575, U-597 (lost), U-602, U-609, U-610, U-620, U-621, U-658, U-662, U-704, U-706, U-753 and U-757. |
| Leopard | 12 Oct 1942 | 19 Oct 1942 | 8 | 1 | 0 | 2 | Atlantic Ocean, in tandem with Wotan, vs convoys ONS.136 and SC.104. Comprised U-254, U-353 (lost), U-382, U-437, U-442, U-597 (lost), U-620 and U-662. |
| Puma | 16 Oct 1942 | 29 Oct 1942 | 13 | 13 | 3 | 0 | Atlantic Ocean vs convoys ON.138, ON.139 and HX.212. Comprised U-224, U-301, U-383, U-436, U-441, U-443, U-563, U-575, U-602, U-606, U-621, U-624 and U-753. |
| Streitaxt | 20 Oct 1942 | 2 Nov 1942 | 10 | 12 | 7 | 0 | Atlantic Ocean, off the Strait of Gibraltar, vs convoy SL.125. Comprised U-103, U-134, U-203, U-409, U-440, U-509, U-510, U-572, U-604 and U-659. |
| Veilchen | 20 Oct 1942 | 7 Nov 1942 | 13 | 8 | 2 | 1 | Atlantic Ocean vs convoy SC.107. Initially comprised U-71, U-84, U-89, U-132, U-381, U-402, U-438, U-454, U-571, U-658 (lost) and U-704, reinforced by U-437 and U-442. |
| Südwärts | 24 Oct 1942 | 26 Oct 1942 | 6 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-154, U-260, U-301, U-620, U-662 and U-706. |
| Natter | 30 Oct 1942 | 8 Nov 1942 | 15 | 2 | 0 | 0 | Atlantic Ocean vs convoy ON.142. Comprised U-86, U-91, U-92, U-98, U-218, U-224, U-383, U-436, U-564, U-566, U-606, U-613, U-624, U-653 and U-753. |
| Delphin | 4 Nov 1942 | 14 Nov 1942 | 9 | 1 | 0 | 1 | Western Mediterranean and eastern Atlantic Ocean off the Strait of Gibraltar. Comprised U-259, U-380, U-407, U-440, U-595 (lost), U-596, U-617, U-662 and U-755. Sank the Dutch Nieuw Zeeland of the Operation Torch invasion convoys. |
| Kreuzotter | 8 Nov 1942 | 24 Nov 1942 | 13 | 7 | 1 | 1 | Atlantic Ocean vs convoy ON.144. Comprised U-84, U-184 (lost), U-224, U-262, U-383, U-454, U-521, U-522, U-606, U-611, U-624 and U-753. |
| Westwall II | 8 Nov 1942 | 16 Dec 1942 | 20 | 11 | 3 | 1 | Atlantic Ocean, in the Bay of Biscay and western Mediterranean, vs convoys for Operation Torch, MKF.1X, MKF.1Y, MKS.1X, KMS.3, ON.149. Comprised U-86, U-91, U-92, U-98 (lost), U-103, U-106, U-118, U-130, U-155, U-185, U-218, U-263, U-411, U-413, U-515, U-519, U-564, U-566, U-613 and U-653. |
| Schlagetot II | 9 Nov 1942 | 21 Nov 1942 | 10 | 4 | 3 | 2 | Off the northwest coast of Africa vs convoy UGF.1. A reaction to Operation Torch. Comprised U-103, U-108, U-130, U-173, U-509, U-510, U-511, U-572 and U-752. |
| Wal | 10 Nov 1942 | 15 Nov 1942 | 8 | 3 | 1 | 2 | Mediterranean Sea vs convoys for Operation Torch. Comprised U-73, U-81 (lost), U-259, U-380, U-407, U-565, U-617 and U-660 (lost). |
| Boreas | 19 Nov 1942 | 9 Dec 1942 | 10 | 2 | 0 | 0 | Between Norway and the Svalbard islands group vs convoy QP.15. Comprised U-209, U-212, U-376, U-378, U-405, U-456, U-582, U-592, U-601 and U-625. Sank the British Goolistan (U-625) and the Soviet Kuznets (U-601). |
| Drachen | 22 Nov 1942 | 3 Dec 1942 | 5 | 2 | 0 | 0 | Atlantic Ocean vs convoys SC.110 and HX.216. Comprised U-262, U-445, U-611, U-623 and U-663. Sank the British Ocean Crusader (HX.216) by U-262 and Barberrys (SC.110) convoy by U-663. |
| Panzer | 23 Nov 1942 | 11 Dec 1942 | 11 | 1 | 0 | 2 | Atlantic Ocean vs HX.217. Comprised U-135, U-211, U-254 (lost), U-439, U-445, U-465, U-524 (lost), U-611, U-623, U-663 and U-758. Sank the British Empire Spenser (U-524). |
| Panther | 29 Nov 1942 | 11 Dec 1942 | 7 | ? | ? | ? | Atlantic Ocean vs convoys ONS.148 and HX.217. Comprised U-135, U-211, U-254, U-439, U-465, U-524 and U-758. |
| Draufgänger | 29 Nov 1942 | 11 Dec 1942 | 10 | 3 | 0 | 0 | Atlantic Ocean vs convoys MKF.3 and HX.217. Comprised U-221, U-373, U-455, U-553, U-569, U-600, U-604, U-609, U-610 and U-615. |
| Büffel | 9 Dec 1942 | 15 Dec 1942 | 3 | 0 | 0 | 0 | Atlantic Ocean vs Convoy HX 218:HX.218. Comprised U-373, U-445 and U-663. |
| Raufbold | 11 Dec 1942 | 22 Dec 1942 | 14 | 4 | 1 | 0 | Atlantic Ocean vs convoys ON.152 and ON.153. Comprised U-135, U-203, U-211, U-356, U-409, U-410, U-439, U-600, U-609, U-610, U-621, U-623 and U-644. |
| Ungestüm | 11 Dec 1942 | 30 Dec 1942 | 13 | 9 | 1 | 0 | Atlantic Ocean vs convoys HX.218, ONS.152 and, in tandem with Spitz, ON.154. Comprised U-336, U-373, U-435, U-445, U-455, U-524, U-569, U-591, U-604, U-615 and U-628. |
| Spitz | 22 Dec 1942 | 31 Dec 1942 | 11 | 8 | 9 | 1 | Atlantic Ocean, in tandem with Ungestüm, vs convoy ONS.154. Comprised U-123, U-203, U-225, U-260, U-356 (lost), U-406, U-440, U-441, U-659, U-662 and U-664. |
| Delphin II | 26 Dec 1942 | 14 Feb 1943 | 17 | 10 | 1 | 2 | Atlantic Ocean vs convoys TM.1 and UGS.4. Comprised U-87, U-107, U-125, U-202, U-258, U-264, U-381, U-436, U-442 (lost), U-463, U-511, U-514, U-522, U-558, U-571, U-575 and U-620 (lost). |
| Falke | 28 Dec 1942 | 19 Jan 1943 | 23 | 6 | 0 | 0 | Atlantic Ocean vs convoys ONS.158, ONS.159, ONS.160 and HX.222. Comprised U-69, U-71, U-167, U-201, U-226, U-257, U-268, U-333, U-384, U-403, U-404, U-414, U-441, U-444, U-525, U-563, U-572, U-584, U-606, U-607, U-631, U-632 and U-706. |
| Habicht | 10 Jan 1943 | 19 Jan 1943 | 10 | 1 | 0 | 0 | Atlantic Ocean vs convoys SC.115 and HX.222. Comprised U-186, U-226, U-268, U-303, U-383, U-438, U-613, U-624, U-704 and U-752. |
| Jaguar | 10 Jan 1943 | 31 Jan 1943 | 8 | 2 | 0 | 0 | Atlantic vs convoys SC.117 and HX.223. Comprised U-96, U-123, U-266, U-413, U-594, U-598, U-662 and U-706. |
| Haugegen | 19 Jan 1943 | 15 Feb 1943 | 26 | 2 | 1 | 1 | Atlantic Ocean vs convoys HX.223, SG.19, HX.225, SC.119 and ON.165. |
| Landsknecht | 19 Jan 1943 | 28 Jan 1943 | 21 | 0 | 0 | 1 | Atlantic Ocean vs convoy HX.224. Comprised U-71, U-187, U-257, U-262, U-267, U-333, U-384, U-402, U-404, U-444, U-454, U-456, U-465, U-553 (lost), U-572, U-584, U-609, U-614, U-631 and U-632. |
| Nordwind | 24 Jan 1943 | 4 Feb 1943 | 7 | 3 | 0 | 0 | Off north coast of Norway vs convoy RA.52. Comprised U-255, U-302, U-622, U-625, U-629 and U-657. |
| Rochen | 27 Jan 1943 | 1 Mar 1943 | 13 | 5 | 3 | 0 | Atlantic Ocean, off northwest Africa, vs convoys UC.1 and ON.165. Comprised U-43, U-66, U-87, U-108, U-118, U-202, U-218, U-258, U-264, U-461, U-504, U-521 and U-558. |
| Pfeil II | 1 Feb 1943 | 9 Feb 1943 | 13 | 11 | 1 | 2 | Atlantic Ocean vs convoy SC.118. Comprised U-89, U-135, U-187 (lost), U-262, U-266, U-267, U-402, U-413, U-454, U-465, U-594, U-608 and U-609 (lost). |
| Nordsturm | 2 Feb 1943 | 9 Feb 1943 | 5 | 1 | 0 | 0 | Atlantic Ocean, south of Greenland, vs convoy SG.19. Comprised U-186, U-223, U-268, U-358 and U-707. |
| Hartherz | 3 Feb 1943 | 7 Feb 1943 | 10 | 0 | 0 | 0 | Atlantic, west of the Bay of Biscay, vs KMS and MKS convoys. Comprised U-71, U-107, U-183, U-332, U-519, U-572, U-584, U-621, U-628, U-653 and U-753. |
| Seehund | 5 Feb 1943 | 12 Apr 1943 | ? | ? | ? | ? | Off the coast of South Africa and in the Indian Ocean. |
| Ritter | 11 Feb 1943 | 26 Feb 1943 | 13 | 5 | 4 | 1 | Atlantic Ocean, in tandem with Knappen, vs convoys HX.226 and ON.166. Comprised U-92, U-225, U-332, U-377, U-454, U-468, U-529, U-603, U-621, U-623 (lost), U-628, U-653 and U-753. |
| Taifun | 15 Feb 1943 | 20 Feb 1943 | 5 | 1 | 0 | 0 | Atlantic Ocean, off Newfoundland and Labrador, vs convoy ONS.165. Comprised U-186, U-223, U-358 and U-707 detached from the Haudegen. |
| Robbe | 16 Feb 1943 | 13 Mar 1943 | 8 | 6 | 2 | 0 | Atlantic Ocean vs convoys UC.1, KMS.10, OS.44 and others. Comprised U-103, U-107, U-382, U-410, U-437, U-445, U-511 and U-569. |
| Neptun | 18 Feb 1943 | 3 Mar 1943 | 11 | 3 | 0 | 0 | Atlantic Ocean vs convoys HX.226 and HX.227. Comprised U-89, U-135, U-359, U-376, U-377, U-405, U-448, U-566, U-608, U-634, U-659, U-709 and U-759. |
| Knappen | 19 Feb 1943 | 25 Feb 1943 | 4 | 2 | 2 | 0 | Atlantic Ocean, in tandem with Ritter, vs convoy ON.166. Comprised U-91, U-92, U-600 and U-604. |
| Sturmbock | 21 Feb 1943 | 26 Feb 1943 | 9 | 2 | 0 | 0 | Atlantic Ocean vs convoy ONS.167. Comprised U-84, U-432, U-591, U-664 and U-758. Sank the Panamanian H. H. Rogers (U-664) and US Rosario (U-664). |
| Burggraf | 24 Feb 1943 | 5 Mar 1943 | 18 | 1 | 0 | 0 | Atlantic vs convoy SC.121. Worked with the Neuland, Ostmark, Westmark and Wildfang wolfpacks. |
| Wildfang | 26 Feb 1943 | 5 Mar 1943 | 10 | 0 | 0 | 0 | Atlantic Ocean, in tandem with Ostmark and Westmark, against the SC.121. Comprised U-84, U-89, U-359, U-409, U-432, U-448, U-591, U-638, U-664 and U-758. |
| Tümmler II | 1 Mar 1943 | 22 Mar 1943 | 6 | 2 | 0 | 0 | Eastern Atlantic Ocean, off northwest Africa and the western approaches to the Strait of Gibraltar, with Unverzagt and Wohlgemut, vs convoys UGS.6 and ON.165. Comprised U-43, U-66, U-202, U-504, U-521 and U-558. |
| Neuland | 4 Mar 1943 | 13 Mar 1943 | 22 | 5 | 2 | 1 | Atlantic Ocean vs convoys HX.228 and SC.121. Comprised U-86, U-190, U-221, U-229, U-336, U-373, U-406, U-439, U-440, U-441, U-444 (lost), U-447, U-448, U-530, U-590, U-608, U-633, U-641, U-642, U-659, U-665 and U-757. |
| Ostmark | 6 Mar 1943 | 11 Mar 1943 | 11 | 5 | 1 | 1 | North Atlantic Ocean vs convoy SC.121. Comprised U-190, U-229, U-439, U-447, U-530, U-618, U-633 (lost), U-641, U-642, U-665 and U-666. |
| Westmark | 6 Mar 1943 | 11 Mar 1943 | 17 | 10 | 0 | 1 | Atlantic Ocean, together with Burggraf, Neuland, Ostmark and Wildfang, vs convoys SC.121 and HX.228. Comprised U-228, U-230, U-332, U-359, U-405, U-409, U-432 (lost), U-448, U-523, U-526, U-527, U-566, U-591, U-616, U-634, U-659 and U-709. |
| Raubgraf | 7 Mar 1943 | 20 Mar 1943 | 13 | 11 | 3 | 0 | Atlantic Ocean, in tandem with Dränger and Stürmer, vs convoys ONS.169, ONS.170, SC.122 and HX.229. Comprised U-84, U-89, U-91, U-435, U-468, U-600, U-603, U-615, U-621, U-638, U-653, U-664 and U-758. |
| Stürmer | 11 Mar 1943 | 20 Mar 1943 | 19 | 10 | 3 | 1 | Atlantic Ocean, in tandem with Dränger and Raubgraf, vs convoys SC.122 and HX.229. Comprised U-134, U-190, U-229, U-305, U-338, U-384 (lost), U-439, U-526, U-527, U-530, U-598, U-618, U-631, U-641, U-642, U-665 and U-666. |
| Unverzagt | 12 Mar 1943 | 22 Mar 1943 | 6 | 2 | 1 | 1 | Atlantic Ocean, off the western approaches to the Strait of Gibraltar, in tandem with Tümmler and Wohlgemut, vs convoy UGS.6. Comprised U-106, U-130 (lost), U-167, U-172, U-513 and U-515. |
| Wohlgemut | 12 Mar 1943 | 22 Mar 1943 | 5 | 1 | 0 | 1 | Atlantic Ocean, in tandem with Tümmler and Unverzagt, vs convoy UGS.6. Comprised U-67, U-103, U-109, U-159 and U-524 (lost). |
| Dränger | 14 Mar 1943 | 20 Mar 1943 | 11 | 3 | 0 | 0 | Atlantic vs convoys HX.229 and SC.122, in conjunction with Raubgraf and Stürmer. Comprised U-86, U-221, U-333, U-336, U-373, U-406, U-440, U-441, U-590, U-608 and U-610. |
| Seeteufel | 21 Mar 1943 | 30 Mar 1943 | 17 | 1 | 0 | 0 | Convoy HX 230 |
| Seewolf II | 21 Mar 1943 | 30 Mar 1943 | 19 | 0 | 0 | 0 | Atlantic Ocean vs convoys SC.123 and HX.230. Comprised U-84, U-86, U-257, U-305, U-333, U-336, U-373, U-440, U-441, U-527, U-530, U-590, U-591, U-615, U-618, U-631, U-641, U-642 and U-666. |
| Seeräuber | 25 Mar 1943 | 30 Mar 1943 | 7 | 3 | 0 | 0 | Atlantic Ocean vs convoy RS-3. Comprised U-67, U-123, U-159, U-167, U-172, U-513 and U-515. |
| Eisbär | 27 Mar 1943 | 15 Apr 1943 | 12 | 0 | 0 | 1 | Northwest coast of Norway vs Allied Arctic convoys. Comprised U-212, U-251, U-255, U-269, U-302, U-354, U-355, U-378, U-467, U-625, U-639 and U-644 (lost). |
| (No name) | 27 Mar 1943 | 30 Mar 1943 | 5 | 4 | 1 | 0 | Convoy SL 126 |
| Löwenherz | 1 Apr 1943 | 10 Apr 1943 | 14 | 4 | 3 | 2 | Atlantic Ocean vs convoy HX.231. Comprised U-168, U-191, U-260, U-270, U-563, U-564, U-572, U-584, U-592, U-594, U-630, U-632 (lost), U-635 (lost) and U-706. |
| Taifun II | 2 Apr 1943 | 4 Apr 1943 | 4 | 0 | 0 | 0 | Norwegian Sea. Comprised U-255, U-582, U-629 and U-646. |
| Adler | 7 Apr 1943 | 13 Apr 1943 | 16 | 4 | 0 | 0 | Atlantic Ocean vs convoys HX.232, ON.176 and ONS.2. Comprised U-71, U-84, U-108, U-188, U-257, U-381, U-404, U-413, U-438, U-571, U-613, U-615, U-618 and U-662. |
| Lerche | 10 Apr 1943 | 16 Apr 1943 | 10 | 3 | 1 | 0 | North Atlantic Ocean vs convoy HX.232. Comprised U-168, U-191, U-203, U-260, U-270, U-532, U-563, U-584, U-630 and U-706. |
| Meise | 11 Apr 1943 | 27 Apr 1943 | 34 | 5 | 2 | 2 | North Atlantic Ocean vs convoys SC.126, HX.234, and ONS.4. Comprised U-71, U-84, U-108, U-134, U-188 (lost), U-191 (lost), U-192, U-203, U-209, U-257, U-258, U-267, U-306, U-378, U-381, U-404, U-413, U-415, U-438, U-531, U-532, U-552, U-571, U-598, U-610, U-613, U-618, U-631, U-648, U-662, U-706, U-732 and U-954. |
| (No Name) | 15 Apr 1943 | 18 Apr 1943 | 8 | 1 | 1 | 1 | Convoy HX 233 |
| Specht | 19 Apr 1943 | 4 May 1943 | 24 | 1 | 0 | 1 | Atlantic Ocean, in tandem with Amsel I, Amsel II, Fink and Star, vs convoys SC.127, SC.128 and ONS.5. Comprised U-84, U-92, U-108, U-125 (lost), U-168, U-203, U-226, U-257, U-260, U-264, U-270, U-358, U-404, U-438, U-514, U-584, U-614, U-618, U-628, U-630, U-662, U-706, U-707 and U-732. Sank the British Lorient (ONS.5). |
| Amsel | 22 Apr 1943 | 3 May 1943 | 16 | 0 | 0 | 0 | Atlantic Ocean vs convoys SC.127 and HX.235. Comprised U-186, U-223, U-266, U-267, U-359, U-377, U-383, U-403, U-448, U-366, U-454, U-466, U-468, U-514, U-525, U-634 and U-709. |
| Star | 27 Apr 1943 | 4 May 1943 | 16 | 1 | 0 | 0 | Atlantic Ocean, in tandem with Specht, vs convoy ONS.5. Comprised U-192, U-209, U-231, U-258, U-378, U-381, U-386, U-413, U-528, U-531, U-532, U-533, U-552, U-648, U-650 and U-954. |
| Drossel | 29 Apr 1943 | 15 May 1943 | 13 | 4 | 0 | 7 | Atlantic Ocean vs convoys SL.128 and HX.237. Comprised U-89 (lost), U-221, U-230, U-332 (lost), U-406, U-436, U-439 (lost), U-447 (lost), U-456 (lost), U-600, U-607, U-659 (lost) and U-753 (lost). |
| Amsel 1 | 3 May 1943 | 6 May 1943 | 6 | 1 | 0 | 1 | Atlantic Ocean vs convoy ONS.5. Comprised U-267, U-402, U-504, U-575, U-621 and U-638 (lost). Sank the British Dolius. |
| Amsel 2 | 3 May 1943 | 6 May 1943 | 6 | 3 | 0 | 0 | Atlantic Ocean vs convoy ONS.5. Comprised U-107, U-223, U-266, U-377, U-383 and U-634. |
| Amsel 3 | 3 May 1943 | 6 May 1943 | 6 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-448, U-468, U-525, U-569, U-709 and U-752. |
| Amsel 4 | 3 May 1943 | 6 May 1943 | 6 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-103, U-186, U-359, U-403, U-454 and U-466. |
| Fink | 4 May 1943 | 6 May 1943 | 28 | 8 | 0 | 5 | Atlantic Ocean vs convoys ONS.5 and SC.128, in tandem with the Amsel I, Amsel II, Specht and Star wolfpacks. Comprised U-125 (lost), U-168, U-192 (lost), U-209, U-226, U-231, U-260, U-264, U-270, U-358, U-378, U-381, U-413, U-438 (lost), U-514, U-531 (lost), U-533, U-552, U-584, U-614, U-628, U-630 (lost), U-648, U-650, U-662, U-707, U-732 and U-954. |
| Aufnahme | 7 Mar 1942 | 11 Mar 1942 | 4 | 0 | 0 | 0 | Arctic Ocean off Norway. Comprised U-377, U-403, U-454 and U-589. |
| (No Name) | 5 May 1943 | 10 May 1943 | 9 | 0 | 0 | 0 | |
| Elbe | 7 May 1943 | 10 May 1943 | 16 | 0 | 0 | 0 | North Atlantic Ocean. Comprised U-107, U-223, U-231, U-266, U-267, U-377, U-383, U-402, U-504, U-514, U-575, U-584, U-614, U-621, U-634 and U-650. |
| Rhein | 7 May 1943 | 10 May 1943 | 12 | 0 | 0 | 0 | Atlantic Ocean vs convoy HX.237. Formed from the Amsel I and Amsel II packs, comprised U-103, U-186, U-359, U-403, U-448, U-454, U-466, U-468, U-525, U-569, U-709 and U-752. |
| Elbe 1 | 10 May 1943 | 14 May 1943 | 13 | 0 | 0 | 0 | Central North Atlantic Ocean vs convoy HX.237. Comprised U-231, U-267, U-468, U-514, U-525, U-569, U-575, U-584, U-614, U-650, U-709 and U-752. |
| Elbe 2 | 10 May 1943 | 14 May 1943 | 13 | 2 | 0 | 1 | North Atlantic Ocean vs convoy SC.129. Comprised U-103, U-107, U-186 (lost), U-223, U-359, U-377, U-383, U-402, U-448, U-454, U-466, U-504 and U-621. |
| Isar | 10 May 1943 | 15 May 1943 | 4 | 0 | 0 | 0 | North Atlantic Ocean, in tandem with the Inn wolfpack, vs convoy ONS.7. Comprised U-304, U-418, U-645 and U-952. On 15 May the Isar, Inn and Nahe wolfpacks combined to create the two Donau wolfpacks. |
| Nahe | ?? May 1943 | ?? May 1943 | ? | ? | ? | ? | Unrealised wolfpack in the Atlantic. Absorbed into the Donau I and Donau II wolfpacks. |
| Lech | 10 May 1943 | 15 May 1943 | 3 | 0 | 0 | 0 | Atlantic Ocean, in tandem with Isar and Inn, vs convoy ONS.7. Comprised U-91, U-202 and U-664. Broken up for incorporation in the Donau wolfpacks. |
| Inn | 11 May 1943 | 15 May 1943 | 4 | 0 | 0 | 0 | Atlantic Ocean, in tandem with Isar vs convoy ONS.7. Comprised U-92, U-258, U-381 and U-954. On 15 May, Inn and Isar plus the Nahe wolfpack combined to create the two Donau wolfpacks. |
| Iller | 12 May 1943 | 15 May 1943 | 6 | 0 | 0 | 1 | Greenland/Iceland gap vs convoy SC.130. Comprised U-340, U-636, U-640 (lost), U-657, U-731 and U-760. |
| Naab | 12 May 1943 | 15 May 1943 | 7 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-92, U-218, U-264, U-378, U-413, U-552 and U-707. |
| Donau 1 | 15 May 1943 | 26 May 1943 | 12 | 1 | 0 | 3 | North Atlantic Ocean vs convoys ONS.7 and SC.130. |
| Donau 2 | 15 May 1943 | 26 May 1943 | 11 | 0 | 0 | 1 | North Atlantic Ocean vs convoy SC.130. |
| Oder | 17 May 1943 | 19 May 1943 | 9 | 0 | 0 | 0 | Atlantic Ocean vs convoy HX.238. Comprised U-221, U-228, U-336, U-558, U-603, U-642, U-666 and U-752. |
| Mosel | 19 May 1943 | 24 May 1943 | 21 | 0 | 0 | 2 | Atlantic Ocean vs convoys HX.239, ON.184 and SC.130. Comprised U-218, U-221, U-228, U-231, U-264, U-305, U-336, U-378, U-468, U-552, U-558, U-569 (lost), U-575, U-603, U-607, U-621, U-641, U-642, U-650, U-666 and U-752 (lost). |
| Trutz | 1 Jun 1943 | 15 Jul 1943 | 18 | 0 | 0 | 1 | Atlantic Ocean vs convoys between the US and Gibraltar including GUS.7A. Lost U-217. |
| Trutz 1 | 16 Jun 1943 | 29 Jun 1943 | 4 | 0 | 0 | 0 | Breakup of Trutz into smaller wolfpacks, vs convoy GUS.8. Comprised U-228, U-558, U-608 and U-642. |
| Trutz 2 | 16 Jun 1943 | 29 Jun 1943 | 8 | 0 | 0 | 0 | Breakup of Trutz into smaller wolfpacks, vs convoy GUS.8. Comprised U-135, U-232, U-336, U-603, U-641, U-666, U-951 and U-953. |
| Trutz 3 | 16 Jun 1943 | 29 Jun 1943 | 4 | 0 | 0 | 0 | Breakup of Trutz into smaller wolfpacks, vs convoy GUS.8. Comprised U-193, U-211, U-221 and U-435. |
| Geier 1 | 30 Jun 1943 | 15 Jul 1943 | 4 | 0 | 0 | 0 | One of three sub-operations in Geier in the Atlantic off the Iberian peninsula using boats which had previously been part of the Trutz wolfpack. Comprised U-228, U-603, U-608 and U-641. |
| Geier 2 | 30 Jun 1943 | 15 Jul 1943 | 4 | 0 | 0 | 2 | One of three sub-operations in Geier in the Atlantic off the Iberian peninsula using boats which had previously been part of the Trutz wolfpack. Comprised U-211, U-435 (lost), U-951 (lost) and U-953. |
| Geier 3 | 30 Jun 1943 | 15 Jul 1943 | 3 | 0 | 0 | 1 | One of three sub-operations in Geier in the Atlantic off the Iberian peninsula using boats which had previously been part of the Trutz wolfpack. Comprised U-232 (lost), U-336 and U-642. |
| (No Name) | 11 Jul 1943 | 29 Jul 1943 | 6 | 0 | 0 | 0 | |
| Wiking | 1 Aug 1943 | 8 Oct 1943 | 7 | 4 | 1 | 0 | Kara Sea vs convoy VA.18. Comprised U-302, U-307, U-354, U-601, U-703, U-711 and U-960. |
| Monsun | 6 Jul 1943 | 27 Aug 1943 | ? | ? | ? | ? | Indian Ocean, by individual boats rather than a wolfpack. |
| Monsun | 30 Aug 1943 | 23 Nov 1943 | 8 | 0 | 0 | 0 | Between Norway and the Svalbard islands group against Allied Arctic convoys. Comprised U-277, U-307, U-355, U-360, U-387, U-713, U-737 and U-956. |
| Leuthen | 15 Sep 1943 | 24 Sep 1943 | 21 | 10 | 3 | 3 | Atlantic Ocean vs convoys ON.202 and ONS.18. Comprised U-229 (lost), U-238, U-260, U-270, U-274, U-305, U-338 (lost), U-341 (lost), U-377, U-378, U-386, U-402, U-413, U-422, U-584, U-641, U-645, U-666, U-731, U-758, U-952 and U-963. |
| Rossbach | 24 Sep 1943 | 9 Oct 1943 | 26 | 2 | 0 | 6 | Atlantic Ocean vs convoys ON.203, ONS.19, HX.258, ON.204, HX.259 and SC.143. Comprised U-91, U-260, U-275, U-279 (lost), U-305, U-309, U-336 (lost), U-378, U-389 (lost), U-402, U-419 (lost), U-437, U-448, U-539, U-584, U-603, U-610 (lost), U-631, U-641, U-643 (lost), U-645, U-666, U-731, U-758, U-762 and U-952. Sank the Free Polish destroyer Orkan. |
| Schlieffen | 14 Oct 1943 | 22 Oct 1943 | 18 | 0 | 0 | 5 | Atlantic Ocean vs convoys ON.206 and ONS.20. Comprised U-91, U-231, U-267, U-281, U-309, U-413, U-426, U-437, U-448, U-455, U-470 (lost), U-540 (lost), U-608, U-631 (lost), U-762, U-841 (lost), U-842 and U-844 (lost). |
| Eisenbart | 22 Oct 1943 | 5 Jan 1944 | 12 | 0 | 0 | 0 | Arctic Ocean vs convoys JW.55A, RA.55A and RA.55B. Comprised U-277, U-307, U-314, U-354, U-360, U-387, U-601, U-716 and U-957. |
| Siegfried | 22 Oct 1943 | 27 Oct 1943 | 23 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-91, U-212, U-226, U-231, U-267, U-281, U-309, U-373, U-405, U-413, U-426, U-437, U-552, U-575, U-592, U-608, U-648, U-709, U-762, U-842, U-963, U-967 and U-969. |
| Schill | 25 Oct 1943 | 16 Nov 1943 | 10 | 1 | 0 | 2 | Atlantic Ocean vs convoys MKS.28, KMS.31, MKS.29A, MKS.30 and SL.139. Comprised U-228, U-262, U-306 (lost), U-333, U-358, U-466, U-707 (lost) and the anti-aircraft boats U-211, U-441 and U-953. |
| Siegfried 1 | 27 Oct 1943 | 30 Oct 1943 | 6 | 0 | 0 | 0 | First section of Siegfried vs convoy SC.145. Comprised U-212, U-231, U-405, U-608, U-967 and U-969. |
| Siegfried 2 | 27 Oct 1943 | 30 Oct 1943 | 8 | 0 | 0 | 0 | Second section of Siegfried vs convoy SC.145. Comprised U-267, U-281, U-413, U-426, U-437, U-552, U-592 and U-963. |
| Siegfried 3 | 27 Oct 1943 | 30 Oct 1943 | 6 | 0 | 0 | 0 | Third section of Siegfried vs convoy SC.145. Comprised U-226, U-373, U-575, U-648, U-709 and U-842. |
| Jahn | 30 Oct 1943 | 2 Nov 1943 | 12 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-226, U-373, U-426, U-437, U-552, U-575, U-582, U-592, U-608, U-648, U-709 and U-842. |
| Körner | 30 Oct 1943 | 2 Nov 1943 | 11 | 0 | 0 | 0 | Atlantic Ocean vs convoys ON.208, HX.263 and ONS.21. Comprised U-212, U-231, U-267, U-280, U-281, U-413, U-714, U-843, U-963, U-967 and U-969. |
| Tirpitz 1 | 2 Nov 1943 | 8 Nov 1943 | 4 | 0 | 0 | 0 | Part of a five-part wolfpack in the Atlantic Ocean vs convoy HX.264. |
| Tirpitz 2 | 2 Nov 1943 | 8 Nov 1943 | 5 | 0 | 0 | 0 | Part of a five-part wolfpack in the Atlantic Ocean vs convoy HX.264. |
| Tirpitz 3 | 2 Nov 1943 | 8 Nov 1943 | 5 | 0 | 0 | 0 | Part of a five-part wolfpack in the Atlantic Ocean vs convoy HX.264. |
| Tirpitz 4 | 2 Nov 1943 | 8 Nov 1943 | 4 | 0 | 0 | 1 | Part of a five-part wolfpack in the Atlantic Ocean vs convoy HX.264. |
| Tirpitz 5 | 2 Nov 1943 | 8 Nov 1943 | 3 | 0 | 0 | 1 | Part of a five-part wolfpack in the Atlantic Ocean vs convoy HX.264. |
| Eisenhart 1 | 9 Nov 1943 | 15 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 2 | 9 Nov 1943 | 15 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 3 | 9 Nov 1943 | 15 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 4 | 9 Nov 1943 | 15 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 5 | 9 Nov 1943 | 15 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 6 | 9 Nov 1943 | 13 Nov 1943 | 1 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 7 | 9 Nov 1943 | 15 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 8 | 9 Nov 1943 | 11 Nov 1943 | 4 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 9 | 9 Nov 1943 | 11 Nov 1943 | 3 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Eisenhart 10 | 9 Nov 1943 | 10 Nov 1943 | 1 | 0 | 0 | 0 | One of ten sub-operations in Eisenhart in the North Atlantic vs convoys HX.264, SC.146 and HX.265. |
| Schill 1 | 16 Nov 1943 | 22 Nov 1943 | 8 | 1 | 0 | 1 | Part of a three-part wolfpack operation in the Atlantic Ocean vs MKS.30. Comprised U-211 (lost), U-228, U-262, U-333, U-358, U-426, U-515 and U-600. Damaged beyond repair the British sloop HMS Chanticleer (U-515). |
| Schill 2 | 17 Nov 1943 | 22 Nov 1943 | 9 | 0 | 0 | 1 | Part of a three-part wolfpack operation in the Atlantic Ocean. Comprised U-86, U-238, U-343, U-536 (lost), U-582, U-608, U-648, U-709 and U-969. |
| Schill 3 | 18 Nov 1943 | 22 Nov 1943 | 9 | 0 | 0 | 0 | Part of a three-part wolfpack operation in the Atlantic Ocean. Comprised U-212, U-391, U-424, U-542, U-618, U-714, U-764, U-843 and U-967. |
| Weddigen | 22 Nov 1943 | 7 Dec 1943 | 17 | 0 | 0 | 4 | Atlantic Ocean vs convoys KMS.30, OS.59, MKS.31, SL.140, KMS.34 and OS.60. Comprised the remaining boats of the Schill wolfpack, U-86 (lost), U-107, U-228, U-238, U-262, U-358, U-391, U-424, U-542 (lost), U-582, U-600 (lost), U-618, U-648 (lost), U-714, U-764, U-843 and U-969. |
| Coronel | 4 Dec 1943 | 8 Dec 1943 | 19 | 0 | 0 | 0 | North Atlantic Ocean vs convoys ONS.24, HX.268 and ON.214. Comprised U-92, U-107, U-269, U-311, U-415, U-421, U-541, U-543, U-544, U-618, U-625, U-629, U-653, U-667, U-672, U-734, U-761, U-801 and U-962. |
| Coronel 1 | 8 Dec 1943 | 17 Dec 1943 | 19 | 0 | 0 | 1 | North Atlantic Ocean. Comprised U-92, U-284, U-311, U-364, U-392, U-421, U-471, U-544, U-625, U-629, U-653, U-672, U-741, U-744, U-761, U-960, U-972 (lost), U-976 and U-981. |
| Coronel 2 | 8 Dec 1943 | 17 Dec 1943 | 21 | 0 | 0 | 1 | North Atlantic Ocean. Comprised U-92, U-107, U-302, U-311, U-390, U-415, U-421, U-541, U-543, U-544, U-618, U-625, U-629, U-645 (lost), U-653, U-667, U-672, U-734, U-761, U-801 and U-962. |
| Coronel 3 | 14 Dec 1943 | 17 Dec 1943 | 9 | 0 | 0 | 0 | North Atlantic Ocean. Comprised U-107, U-415, U-541, U-543, U-618, U-645 (lost), U-667, U-801 and U-962. |
| Amrum | 18 Dec 1943 | 23 Dec 1943 | 6 | 0 | 0 | 0 | Atlantic Ocean vs various ON, HX and SC convoys. Comprised U-302, U-311, U-392, U-629, U-960 and U-976. |
| Borkum | 18 Dec 1943 | 3 Jan 1944 | 17 | 2 | 0 | 1 | Atlantic Ocean vs convoys MKS.33/SL.142, OS.62/KMS.36 and MKS.34/SL.143 pairs. Comprised U-107, U-231, U-270, U-275, U-305, U-377, U-382, U-415, U-541, U-618, U-641, U-645 (lost), U-667, U-758, U-801, U-953 and U-962. Sank two destroyers, the British HMS Hurricane (U-415) and US USS Leary (U-275). |
| Föhr | 18 Dec 1943 | 23 Dec 1943 | 6 | 0 | 0 | 0 | Atlantic vs ON, HX and SC-series convoys. Comprised U-92, U-421, U-544, U-625, U-653 and U-672. |
| Sylt | 18 Dec 1943 | 23 Dec 1943 | 6 | 0 | 0 | 0 | Atlantic Ocean against several ON, HX and SC convoys. Comprised U-364, U-471, U-741, U-744, U-972 and U-981. The Sylt wolfpack's boats were divided, together with those of the Amrum and Föhr wolfpacks, into the six elements of the Rügen wolfpack. |
| Rügen 1 | 23 Dec 1943 | 7 Jan 1944 | 8 | 1 | 1 | 0 | Part of a seven-part wolfpack operation in the Atlantic Ocean vs convoy ON.217. Comprised U-364, U-545, U-547, U-741, U-744, U-762, U-972 and U-981. |
| Rügen 2 | 23 Dec 1943 | 7 Jan 1944 | 6 | 0 | 0 | 1 | Part of a seven-part wolfpack operation in the Atlantic Ocean. Comprised U-364, U-545, U-741, U-744, U-762, U-972 (lost) and U-981. |
| Rügen 3 | 23 Dec 1943 | 7 Jan 1944 | 8 | 0 | 0 | 0 | Part of a seven-part wolfpack operation in the Atlantic Ocean. Comprised U-302, U-390, U-392, U-471, U-763, U-846 and U-960. |
| Rügen 4 | 23 Dec 1943 | 7 Jan 1944 | 9 | 0 | 0 | 0 | Part of a seven-part wolfpack operation in the Atlantic Ocean. Comprised U-92, U-302, U-311, U-392, U-471, U-846, U-960 and U-976. |
| Rügen 5 | 23 Dec 1943 | 7 Jan 1944 | 9 | 0 | 0 | 0 | Part of a seven-part wolfpack operation in the Atlantic Ocean. Comprised U-92, U-260, U-311, U-672, U-757, U-846 and U-976. |
| Rügen 6 | 23 Dec 1943 | 7 Jan 1944 | 11 | 0 | 0 | 0 | Part of a seven-part wolfpack operation in the Atlantic Ocean. Comprised U-260, U-309, U-421, U-544, U-625, U-653, U-666, U-672, U-731 and U-976. |
| Hela | 28 Dec 1943 | 1 Jan 1944 | 4 | 0 | 0 | 0 | Southwestern approaches to the UK. Comprised U-421, U-505, U-618 and U-666. |
| Rügen 7 | 28 Dec 1943 | 2 Jan 1944 | 3 | 0 | 0 | 0 | Part of a seven-part wolfpack operation in the Atlantic Ocean. Comprised U-309, U-653 and U-731. |
| Isegrim | 1 Jan 1944 | 27 Jan 1944 | 15 | 3 | 2 | 0 | Arctic Ocean vs convoys JW.56A and JW.56B. Comprised U-278, U-312, U-314, U-360, U-425, U-472, U-601, U-636, U-716, U-737, U-739, U-956, U-957 and U-965. Damaged the British destroyer HMS Obdurate (U-360). |
| Borkum 1 | 3 Jan 1944 | 13 Jan 1944 | 3 | 1 | 0 | 0 | West of the Iberian peninsula vs convoys MKS.35 and SL.144. Comprised U-270, U-305 and U-382. Sank the British frigate HMS Tweed (U-305). |
| Borkum 2 | 3 Jan 1944 | 13 Jan 1944 | 2 | 0 | 0 | 0 | West of the Iberian peninsula. Comprised U-641 and U-758. |
| Borkum 3 | 3 Jan 1944 | 13 Jan 1944 | 3 | 0 | 0 | 1 | West of the Iberian peninsula. Comprised U-231 (lost), U-377 and U-953. |
| Rügen | 7 Jan 1944 | 26 Jan 1944 | 31 | 0 | 0 | 4 | Atlantic Ocean vs convoys TU.5 and ON.215. Survivors of seven individually numbered and smaller Rügen groups were assembled into this larger group; comprised U-92, U-212, U-260, U-271, U-281, U-302, U-305 (lost), U-309, U-311, U-364, U-377 (lost), U-382, U-390, U-392, U-406, U-471, U-545, U-547, U-571, U-592, U-641 (lost), U-650, U-666, U-731, U-741, U-757 (lost), U-762, U-846, U-976, U-981 and U-984. |
| Hinein | 26 Jan 1944 | 3 Feb 1944 | 8 | 0 | 0 | 2 | Atlantic vs convoy ON.221. Comprised U-212, U-271 (lost), U-281, U-441, U-571 (lost), U-592, U-650 and U-764. |
| Stürmer | 26 Jan 1944 | 3 Feb 1944 | 13 | 0 | 0 | 0 | Atlantic Ocean vs convoys OS.66 and KMS.40. Comprised U-283, U-309, U-386, U-390, U-406, U-545, U-547, U-666, U-731, U-762, U-984, U-985 and U-989. |
| Werwolf | 27 Jan 1944 | 28 Feb 1944 | 21 | 2 | 0 | 1 | Norwegian Sea vs convoys JW.56B, JW.57 and RA.56. Comprised U-278, U-312, U-313, U-314 (lost), U-362, U-425, U-472, U-601, U-674, U-713, U-716, U-737, U-739, U-956, U-957, U-965, U-973 and U-990. Sank the British destroyers HMS Hardy (U-278) and HMS Mahratta (U-990). |
| Igel | 3 Feb 1944 | 17 Feb 1944 | 15 | 1 | 0 | 3 | Double operation in the North Atlantic vs convoys MKS.38, SL.147, UC.12, ON.223, HX.277, OS.67, KMS.41, ONS.29, ON.224, OS.68 and KMS.42. |
| Hai 1 | 17 Feb 1944 | 22 Feb 1944 | 16 | 1 | 0 | 3 | Atlantic Ocean vs convoys HX.278 and ON.224. Comprised U-91, U-212, U-256, U-264 (lost), U-386 (lost), U-406 (lost), U-437, U-441, U-546, U-549, U-603, U-608, U-709, U-764, U-985 and U-989. Sank the British sloop HMS Woodpecker (U-256). |
| Hai 2 | 17 Feb 1944 | 22 Feb 1944 | 3 | 0 | 0 | 0 | Atlantic Ocean. Comprised U-281, U-650 and U-963. |
| Preussen | 22 Feb 1944 | 22 Mar 1944 | 31 | 5 | 1 | 8 | Atlantic Ocean vs convoys SC.153, SL.150, MKS.41, CU.16, SL.154, HX.281 and ON.227. Comprised U-91 (lost), U-92, U-212, U-255, U-256, U-262, U-267, U-281, U-302, U-311, U-358 (lost), U-415, U-437, U-441, U-448, U-549, U-575 (lost), U-603 (lost), U-608, U-625 (lost), U-653 (lost), U-667, U-672, U-709 (lost), U-741, U-744, U-764 (lost), U-962, U-963, U-985 and U-986. Sank the British frigate HMS Gould (U-358), British LST-362, US destroyer escort USS Leopold (U-255) and British corvette HMS Asphodel (U-575); damaged the British LST-324. |
| Hartmut | 23 Feb 1944 | 28 Feb 1944 | 4 | 0 | 0 | 0 | Norwegian Sea vs convoy JW.57. Comprised U-315, U-366, U-472 and U-673. |
| Boreas | 28 Feb 1944 | 10 Mar 1944 | 12 | 0 | 0 | 2 | |
| Orkan | 5 Mar 1944 | 10 Mar 1944 | 4 | 0 | 0 | 1 | Norwegian Sea. Comprised U-288, U-366 (lost), U-674 and U-990. |
| Taifun | 5 Mar 1944 | 10 Mar 1944 | 4 | 0 | 0 | 1 | Norwegian Sea. Comprised U-278, U-737 and U-973 (lost). |
| Hammer | 10 Mar 1944 | 5 Apr 1944 | 5 | 0 | 0 | 1 | Versus convoy JW.58. Comprised U-288 (lost), U-354, U-674, U-968 and U-990. |
| Thor | 10 Mar 1944 | 5 Apr 1944 | 6 | 0 | 0 | 0 | Norwegian Sea vs convoy JW.58. Comprised U-278, U-307, U-312, U-313, U-361 and U-959. |
| Blitz | 24 Mar 1944 | 5 Apr 1944 | 9 | 0 | 0 | 2 | Arctic Ocean vs convoy JW.58. Comprised U-277, U-288, U-315, U-355 (lost), U-360 (lost), U-361, U-711, U-956 and U-990. |
| Donner | 5 Apr 1944 | 20 Apr 1944 | 9 | 0 | 0 | 0 | |
| Keil | 5 Apr 1944 | 20 Apr 1944 | 5 | 1 | 0 | 0 | Norwegian Sea vs convoys RA.58 and RA.59. Comprised U-315, U-361, U-711, U-716 and U-739. |
| Donner Keil |
20 Apr 1944 | 3 May 1944 | 14 | 1 | 0 | 2 | Northwest Norway vs convoy RA.59. Donner comprised U-277 (lost), U-307, U-312, U-315, U-354, U-362, U-636 and U-703. Kiel comprised U-278, U-313, U-361, U-387, U-674 (lost), U-711 and U-739. |
| Trutz | 3 May 1944 | 10 Jul 1944 | 26 | 0 | 0 | 1 | |
| Dragoner | 21 May 1944 | 28 May 1944 | 6 | 0 | 0 | 0 | |
| Grimm | 31 May 1944 | 6 Jun 1944 | 10 | 0 | 0 | 0 | Area of Norway, Iceland and Spitsbergen. Comprised U-307, U-313, U-315, U-347, U-362, U-387, U-668, U-711, U-742 and U-997. |
| Greif | 3 Aug 1944 | 26 Sep 1944 | 6 | 5 | 0 | 1 | Kara Sea vs convoys BD.5 and VD.1. Comprised U-278, U-362 (lost), U-365, U-711, U-739 and U-957. |
| Trutz | 17 Aug 1944 | 6 Sep 1944 | 7 | 3 | 0 | 3 | Arctic Ocean vs convoy JW.59. Comprised U-344 (lost), U-354, U-363, U-395, U-668, U-703 and U-997. Damaged the British escort carrier HMS Nabob (U-354), sank the British sloop HMS Kite (U-344) and the frigate HMS Bickerton (U-354). |
| Dachs | 31 Aug 1944 | 5 Sep 1944 | 6 | 0 | 0 | 0 | |
| Grimm | 9 Sep 1944 | 2 Oct 1944 | 17 | 0 | 0 | 1 | Arctic Ocean. Comprised U-293, U-310, U-312, U-315, U-363, U-365, U-387, U-425, U-636, U-668, U-737, U-921 (lost), U-956, U-965, U-968, U-992 and U-997. |
| Feuer | 17 Sep 1944 | 19 Sep 1944 | 4 | 0 | 0 | 0 | Southwest coast of Norway. Comprised U-293, U-310, U-387 and U-737. |
| Schwefel | 22 Sep 1944 | 25 Sep 1944 | 3 | 0 | 0 | 0 | Arctic Ocean. Comprised U-313, U-668 and U-965. |
| Zorn | 26 Sep 1944 | 2 Oct 1944 | 13 | 2 | 0 | 0 | Norwegian Sea vs convoy RA.60. Comprised U-293, U-310, U-315, U-363, U-365, U-387, U-636, U-668, U-771, U-965, U-968, U-992 and U-995. |
| Regenschirm | 14 Oct 1944 | 16 Oct 1944 | 4 | 0 | 0 | 0 | Off the northwest coast of Norway. Comprised U-293, U-310, U-771 and U-997. |
| Panther | 16 Oct 1944 | 10 Nov 1944 | 21 | 0 | 1 | 0 | Norwegian Sea vs convoys RA.61 and JW.61. Comprised U-293, U-295, U-310, U-312, U-315, U-363, U-365, U-387, U-425, U-636, U-668, U-737, U-771, U-956, U-965, U-968, U-992, U-995, U-997 and U-1163. Damaged the British frigate HMS Mounsey (U-295). |
| Grube | Nov 1944 | Dec 1944 | 7 | 0 | 0 | 0 | Arctic Ocean vs convoy JW.62 supported by Operation Golden. Comprised U-295, U-310, U-387, U-668, U-965, U-997 and U-1163. |
| Stock | 27 Nov 1944 | 14 Dec 1944 | 10 | ? | ? | 0 | Arctic Ocean, in the area to the west of Bjørnøya and in tandem with Grube, vs convoy JW.62 supported by Operation Golden. Comprised U-286, U-293, U-299, U-313, U-315, U-318, U-363, U-365, U-995 and U-992. |
| Stier | 21 Nov 1944 | 8 Jan 1945 | 18 | 7 | 1 | 2 | vs convoys KB.35, RA.62, KB.37 and KP.24. |
| Stier | 30 Dec 1944 | 21 Jan 1945 | 7 | 0 | 0 | 0 | Arctic Ocean vs convoy JW.63. Comprised U-299, U-956, U-995 and U-997 deployed in the Bjørnøya Passage, and U-293, U-310 and U-636 deployed off the mouth of the Kola inlet. |
| Rasmus | 6 Feb 1945 | 13 Feb 1945 | 8 | 0 | 0 | 0 | Arctic Ocean vs convoys JW.64 and BK.3. Comprised U-286, U-293, U-307, U-318, U-425, U-636, U-711, U-716, U-739, U-968, U-992 and U-995. |
| Hagen | 13 Mar 1945 | 21 Mar 1945 | 13 | 3 | 0 | 0 | Arctic Ocean vs convoys JW.65 and RA.65 of Operation Scottish. Comprised U-307, U-310, U-312, U-313, U-318, U-363, U-668, U-711, U-716, U-968, U-992, U-995 and U-997. |
| Seewolf III | 14 Apr 1945 | 1 May 1945 | 6 | 1 | 0 | 4 | Atlantic Ocean. Operation Teardrop. Comprised U-518 (lost), U-546 (lost), U-805, U-858, U-880 (lost) and U-1235 (lost). Sank the US destroyer escort USS Frederick C. Davis (U-546). |
| Faust | 16 Apr 1945 | 1 May 1945 | 9 | 1 | 0 | 2 | Arctic Ocean vs convoy JW.66 as part of Operation Roundel. Comprised U-278, U-286 (lost), U-295, U-307 (lost), U-312, U-313, U-363, U-427 and U-481. Sank the British frigate HMS Goodall (U-286). |