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The Arctic Circle defining the "midnight sun" encompasses the Atlantic Ocean from the northern edge of Iceland to the Bering Strait. The area is often considered part of the Battle of the Atlantic or the European Theatre of World War II. Pre-war navigation focused on fishing and the international ore trade from Narvik and Petsamo. Soviet settlements along the coast and rivers of the Barents Sea and Kara Sea relied upon summer coastal shipping for supplies from railheads at Arkhangelsk and Murmansk. The Soviet Union extended the Northern Sea Route past the Taymyr Peninsula to the Bering Strait in 1935.[1]

Map of the area of greatest naval activity.

The Winter War opened the northern flank of the eastern front of World War II. Arctic[2] naval presence was initially dominated by the Soviet Northern Fleet of a few destroyers with larger numbers of submarines, minesweepers, and torpedo cutters supported by icebreakers. The success of the German invasion of Norway provided the Kriegsmarine with naval bases from which capital ships might challenge units of the Royal Navy Home Fleet. Luftwaffe anti-shipping aircraft of Kampfgeschwader 26 (KG 26) and Kampfgeschwader 30 (KG 30) operated intermittently from Norwegian airfields, while routine reconnaissance was undertaken by Küstenfliegergruppen aircraft including Heinkel He 115s and Blohm & Voss BV 138s.[3] To support the Soviet Union against the German invasion, the Allies initiated a series of PQ and JW convoys bringing military supplies to the Soviet Union in formations of freighters screened by destroyers, corvettes and minesweepers. Escorting cruisers typically maneuvered outside the formation, while a larger covering force including battleships and aircraft carriers often steamed nearby to engage Kriegsmarine capital ships or raid their Norwegian bases.

The Soviet Union and Germany employed smaller coastal convoys to maintain the flow of supplies to the Soviet arctic coast, transport strategic metal ores to Germany, and sustain troops on both sides of the northern flank of the eastern front. Soviet convoys hugged the coast to avoid ice while German convoys used fjords to evade Royal Navy patrols. Both sides devoted continuing efforts to minelaying and minesweeping of these shallow, confined routes vulnerable to mine warfare and submarine ambushes. German convoys were typically screened by minesweepers and submarine chasers while Soviet convoys were often protected by minesweeping trawlers and torpedo cutters. A branch of the Pacific Route began carrying Lend-Lease goods through the Bering Strait to the Soviet Arctic coast in June, 1942. The number of westbound cargo ship voyages along this route was 23 in 1942, 32 in 1943, 34 in 1944, and 31 after Germany surrendered in 1945. Total westbound tonnage through the Bering Strait was 452,393 in comparison to 3,964,231 tons of North American wartime goods sent across the Atlantic to Soviet Arctic ports.[4] A large portion of the Arctic route tonnage was fuel for Siberian airfields on the Alaska-Siberia air route.[5]


  • 6 September 1939: Bremen was the first of 18 German merchant ships to take refuge in Murmansk after avoiding British naval patrols in the Atlantic.[6]

Soviet Northern Fleet destroyer Groznyy.

Invasion of Norway

Destroyers Diether von Roeder and Wolfgang Zenker landing troops at Narvik.

HMS Warspite supporting Allied troops at Narvik.

Burning fish oil tanks on Lofoten during Operation Claymore.

File:Soviet submarine K21.jpg

Soviet Northern Fleet submarine K-21.

Invasion of the Soviet Union

  • 25 June 1941: The Soviet troopship Mossovet brought reinforcements to Titovka; and Soviet destroyers Kuibishev and Uritski landed additional reinforcements on 30 June.[22]
  • 1 July 1941: U-451 and U-652 are the first U-boats stationed in the Arctic.[23]
  • 12 July 1941: Kriegsmarine destroyers Richard Beitzen, Hermann Schoemann, Hans Lody, Friedrich Eckoldt and Karl Galster attacked a small Soviet convoy near Cape Teriberski.[24]
  • 14 July 1941: Soviet destroyers Gromky, Gremyashchy, Stremitleny and Kuibishev delayed a German infantry advance near Zapadnaya Litsa River.[24]
  • 20 July 1941: The Soviet destroyer Stremitleny was sunk in Kola Bay by a LG 1 Junkers Ju 87.[25]
  • 23 July 1941: Kriegsmarine destroyers Richard Beitzen, Hermann Schoemann, Friedrich Eckoldt and Karl Galster sank the Soviet survey ship Meridian near Teriberka.[26]
  • 30 July 1941: HMS Furious and Victorious launched airstrikes on Petsamo and Kirkenes. Victorious launched an airstrike on Tromsø on 31 July. These airstrikes turned back a patrol of Kriegsmarine destroyers.[26]
  • 31 July 1941: HMS Nigeria, Aurora, Punjabi and Tartar destroyed a weather station on Bear Island.[27]
  • August 1941: British submarines HMS Tigris and Trident were transferred to Murmansk.[28]
  • 10 August 1941: Kriegsmarine destroyers Richard Beitzen, Hans Lody and Friedrich Eckoldt sank the Soviet patrol ship Tuman near Kola Bay.[26] U-451 sank Soviet patrol vessel Zhemchug in the White Sea entrance.[25]
  • 19 August 1941: Troopship Empress of Canada sailed from Scapa Flow with HMS Aurora, Nigeria, Icarus, Antelope and Anthony to evacuate Soviet and Norwegian residents following destruction of Spitsbergen coal mines by Operation Gauntlet.[29] The warships encountered a German troop convoy off Porsangerfjorden and sank the escort Bremse on 6 September.[30]
  • 26 August 1941: U-571 sank 3870-ton Mariya Ulyanova.[31]
  • 31 August 1941: The Dervish Convoy arrived in Arkhangelsk initiating transport of Allied war materials around Norway to the Soviet Union. The convoy was escorted by HMS Devonshire, Suffolk and Victorious, which launched airstrikes against Tromsø.[29]
  • 27 September 1941: Max Aitken, Lord Beaverbrook and W. Averell Harriman arrived in Arkhangelsk aboard HMS London.[32]
  • 7 October 1941: HMS Victorious launched an airstrike against Vestfjorden.[33]

PQ convoys

Tirpitz waiting in Norway for another Allied convoy.

  • 17 January 1942: U-454 damaged 5395-ton Harmatris and sank HMS Matabele from convoy PQ 8 as the convoy reached Kola Bay.[43] The German battleship Tirpitz was based at Trondheim, where its presence required the Home Fleet to retain at least one modern battleship which might have otherwise been used in the Mediterranean or Pacific.[44]
  • 5 February 1942: Soviet submarine Shch-421 sank 2975-ton Konsul Schulte off Porsangerfjorden.[45]
  • 10 February 1942: Combined convoys PQ 9 and 10 arrived in Murmansk escorted by HMS Nigeria, Faulknor and Intrepid. The escort departed with return convoy QP 7 on 12 February.[46]
  • 15 February 1942: Soviet submarine S-101 sank 1147-ton Mimona off Tanafjord.[47]
  • 23 February 1942: Convoy PQ 11 arrived in Murmansk. Admiral Scheer joined Tirpitz in Trondheim.[48]
  • 5 March 1942: A Focke-Wulf Fw 200 located Convoy PQ 12 south of Jan Mayen. Tirpitz sailed on 6 March with destroyers Hermann Schoemann, Friedrich Ihn and Z25. The convoy covering force of HMS Duke of York, Renown, Kenya, Faulknor, Eskimo, Punjabi, Fury, Echo and Eclipse failed to locate Tirpitz; and Ihn sank the 2815-ton Ijora straggling from convoy QP 8. An unsuccessful airstrike from HMS Victorious on 9 March caused Tirpitz to seek refuge in Narvik.[49]
  • 24 March 1942: Convoy QP 9 escort HMS Sharpshooter sank U-655.[50]
  • 27 March 1942: A Bv 138 located storm-scattered Convoy PQ 13 escorted by HMS Trinidad, Eclipse and Fury. KG 30 Junkers Ju 88s sank 4815-ton Raceland and 7007-ton Empire Ranger as Kriegsmarine destroyers Z24, Z25 and Z26 sailed. Z26 sank 4687-ton Bateau before being sunk by Trinidad. Trinidad and Eclipse were damaged in the engagement. U-376 sank 5086-ton Induna, and U-435 sank 6421-ton Effingham.[51]
  • 1 April 1942: Soviet submarine Shch-404 sank 2318-ton Michael off Tanafjord.[50]
  • 10 April 1942: Convoy QP 10 departed Kola Bay escorted by HMS Liverpool, Oribi, Punjabi, Marne, Fury and Eclipse. KG 30 Ju 88s sank 7164-ton Empire Cowper and 5486-ton Harpalion. U-435 sank 6008-ton Occidente and 5823-ton Kiev.[52]
  • 19 April 1942: Convoy PQ 14 arrived in Murmansk after U-403 sank 6985-ton Empire Howard.[52]
  • 24 April 1942: Soviet submarine Shch-401 was lost after sinking 1359-ton Stensaas.[52]

HMS Edinburgh during the battle for convoy QP 11.

  • 28 April 1942: Convoy QP 11 departed Murmansk escorted by HMS Edinburgh, Foresight, Forester, Bulldog, Amazon, Beagle and Beverley. U-456 torpedoed Edinburgh. Kriegsmarine destroyers Hermann Schoemann, Z24 and Z25 sank 2847-ton Tsiolkovski and damaged Amazon. Schoemann was sunk by Edinburgh while the German destroyers sank Edinburgh and damaged Forester and Foresight.[53]
  • 5 May 1942: Convoy PQ 15 arrived in Murmansk after KG 26 Heinkel He 111s sank 5848-ton Botavon and 3807-ton Cape Corso and damaged 6153-ton Jutland which was then sunk by U-251. St Albans of the convoy escort accidentally sank supporting Polish submarine ORP Jastrząb.[53] In the covering force, King George V collided with Punjabi, and exploding depth charges on the sinking destroyer damaged the battleship.[54]

HMS King George V with bow damage from collision with HMS Punjabi.

  • 10 May 1942: Scheer moved from Trondheim to Narvik.[55]
  • 14 May 1942: A KG 30 Ju 88 dive bomber sank HMS Trinidad.[56]
  • 15 May 1942: The 11th U-boat Flotilla was established and based at Bergen for Arctic Ocean patrols.[57] Sturzkampfgeschwader 5 (StG 5) Ju 87s attacked Murmansk, damaging 6187-ton Yaka and Soviet submarine Shch-403.[58]
  • 25 May 1942: Lützow joined Admiral Scheer in Narvik. KG 26 and KG 30 damaged 5127-ton Carlton from Convoy PQ 16, and U-703 sank 6191-ton Syros. Continuing aircraft attacks sank Alamar, Mormacsul, Empire Lawrence, Empire Purcell, Lowther Castle, and City of Joliet and damaged Stari Bolshevik, Ocean Voice, Empire Baffin, and HMS Garland before the convoy reached Murmansk on 31 May.[59]
  • 1 June 1942: StG 5 Ju 87s sank 7850-ton Empire Starlight and damaged Soviet submarine Shch-404 in Murmansk.[60]
  • 24 June 1942: A StG 5 Ju 87 sank HMS Gossamer in Kola Bay.[61]

KG 26 He 111 torpedo planes attacked convoys PQ 15, 16 and 17.

  • 4 July 1942: A He 115 sank Liberty ship Christopher Newport from convoy PQ 17; and KG 26 He 111s sank 4841-ton Navarino and damaged Liberty ship William Hooper and 6114-ton Azerbaidzhan. Twenty-two more ships were sunk by aircraft and U-boats after the convoy scattered on 5 July to avoid attacks by German surface ships.[62]

U-255, painted white for arctic camouflage, returning to base after attacking convoy PQ 17.

Convoy PQ 18 under attack by KG 30.

  • 12 September 1942: Convoy PQ 18 escort HMS Faulknor sank U-88 near Bear Island. U-405 and U-589 sank Liberty ship Oliver Ellsworth and 3559-ton Stalingrad on 13 September; while KG 26 and KG 30 bombers sank 5432-ton Wacosta, 4826-ton Oregonian, 6131-ton Macbeth, 5441-ton Africander, 6209-ton Empire Stevenson, 7044-ton Empire Beaumont and 3124-ton Sukhona. U-457 sank 8992-ton Atheltemplar on 14 September; and HMS Onslow sank U-589. HMS Impulsive sank U-457 on 16 September. The 5446-ton Kentucky was sunk and 6458-ton Troubador damaged before the convoy reached Murmansk.[67]
  • 13 September 1942: Convoy QP 14 sailed from Arkhangelsk. On 20 September U-435 sank HMS Leda, U-255 sank 4937-ton Silver Sword, and U-703 sank HMS Somali. U-435 sank 5345-ton Bellingham, 7174-ton Ocean Voice and 3313-ton Grey Ranger on 22 September.[68]

Baku crossed the Arctic Ocean to reinforce the Soviet Northern Fleet.

  • 29 October 1942: Operation FB attempted independent routing of Allied merchant ships. U-586 sank 6640-ton Empire Gilbert on 2 November. KG 30 Ju 88s sank 7363-ton Dekabrist and damaged Liberty ship William Clark and 5445-ton Chulmleigh which were sunk by U-354 and U-625. U-625 also sank 7455-ton Empire Sky; and Z27 sank 7925-ton Donbass on 7 November.[69]
  • 5 November 1942: VP-84 Consolidated PBY Catalina H sank U-408 north of Iceland.[70]
  • 17 November 1942: Convoy QP 15 departed Kola Bay. A storm dispersed the convoy and sank escorting Soviet destroyer Sokrushitelny on 22 November.[71] U-625 sank 5851-ton Goolistan, and U-601 sank 3974-ton Kuznets Lesov.[72]

JW convoys

  • 31 December 1942: Admiral Hipper, Lützow, Richard Beitzen, Theodor Riedel, Friedrich Eckoldt, Z29, Z30 and Z31 attacked convoy JW 51B in the battle of the Barents Sea. The German ships damaged HMS Obdurate, Obedient and Onslow and sank HMS Achates and Bramble, before the covering force arrived to damage Hipper and sink Friedrich Eckoldt.[73]
  • 1 January 1943: Soviet submarine L-20 sank 5472-ton Muansa off Kongsfjorden. U-354 sank 2418-ton Krasnyj Partizan.[74]
  • 29 January 1943: Soviet submarines L-20 sank 7007-ton Othmarschen off Cape Nordkinn and M-171 sank 3243-ton Ilona Siemers off Kongsfjorden. U-255 sank the Soviet icebreaker Malygin and 1892-ton Ufa. U-255 then sank 7460-ton Greylock from convoy RA 52 on 3 February.[75]
  • 12 February 1943: Soviet submarine K-3 sank 8116-ton Fechenheim.[76]
  • 26 February 1943: Convoy JW 53 arrived in Kola Bay with one ship damaged by KG 30 Ju 88s. StG 5 Ju 87s damaged three more ships from the convoy on 27 and 28 February; and continuing air attacks on 6 and 13 March damaged another ship and sank 7173-ton Ocean Freedom.[77]
  • 5 March 1943: U-255 sank Liberty ship Richard Bland and 4978-ton Executive from convoy RA 53. U-586 sank 6076-ton Puerto Rican on 9 March.[78]
  • 12 March 1943: Tipitz, Scharnhorst and Lützow assembled in Narvik causing cancellation of Allied convoys through the summer.[77]
  • 29 March 1943: Soviet submarine S-55 sank 2297-ton Ajax.[79]
  • 7 April 1943: HMS Tuna sank U-644 near Jan Mayen.[80]
  • June 1943: The 13th U-boat Flotilla was established at Trondheim to reduce U-boat losses to Allied bombers patrolling approaches to U-boat bases on the French Atlantic coast.[81]
  • 8 July 1943: HMS Duke of York, Anson, Malaya, and Furious of the Home Fleet with USS South Dakota, Alabama, Augusta and Tuscaloosa conducted exercises off Norway intended to divert attention from Operation Husky.[82]
  • August 1943: U-255 operated near Novaya Zemlya as a refueling station for a BV 138. The BV 138 searched for Kara Sea convoys to be attacked by Lützow and the Wiking Gruppe of U-302, U-354 and U-711. The U-boats torpedoed 3771-ton Petrovski and sank 2900-ton Dikson.[83]
  • 30 August 1943: Soviet submarine S-101 sank U-639 near Novaya Zemlya.[83]
  • 8 September 1943: Scharnhorst, Tirpitz and ten destroyers bombarded Spitsbergen as Operation Zitronella.[84]
  • 17 September 1943: Soviet submarine S-51 sank German minesweeper M-346 off Tanafjord.[85]
  • 23 September 1943: Tirpitz was immobilized in Kåfjord by Operation Source.[86]
  • 30 September 1943: U-960 sank 2480-ton Arkhangelsk from convoy VA 18 near the Kirov Islands; and U-703 sank 4146-ton Sergei Kirov on 1 October.[83]

SBD Dauntless dive bomber from USS Ranger during the Bodø airstrike.

Aircraft carriers of Operation Tungsten preparing for an airstrike on Tirpitz.

  • 2 April 1944: HMS Keppel sank U-360, and other convoy JW 58 escorts sank U-288.[94]
  • 3 April 1944: British carrier aircraft damage Tirpitz during Operation Tungsten.[94]
  • 30 April 1944: U-711 sank Liberty ship William S. Thayer from convoy RA 59. Convoy escorts sank U-277, U-959 and U-674. The convoy covering force launched an airstrike sinking three ships from a German convoy near Bodø.[95]
  • 26 May 1944: Soviet aircraft sank 3402-ton Solviken and damaged 3672-ton Herta Engeline Fritzen near Kirkenes.[96]
  • 31 May 1944: HMS Milne sank U-289 southwest of Bear Island.[97]

German reinforcements from French bases

  • 17 June 1944: Soviet aircraft sank 1610-ton Dixie and damaged 1112-ton Marga Cords and 7419-ton Florianopolis from a convoy near Hammerfest.[98]
  • 17 July 1944: Unsuccessful British carrier attack on Tipitz during Operation Mascot.[99]
  • 31 July 1944: Tipitz completed battle damage repair at Altafjord.[100]
  • 12 August 1944: U-365 sank 5685-ton Marina Raskova and Soviet minesweepers T-114 and T-118 in the Kara Sea.[101]
  • 17 August 1944: Soviet aircraft sank two merchant ships near Kirkenes.[102]
  • 19 August 1944: Soviet torpedo cutters sank 3946-ton Colmar from a German convoy near Persfjord.[102]
  • 21 August 1944: U-344 sank convoy JW 59 escort HMS Kite, and was sunk by Swordfish of the covering force aircraft carrier HMS Victorious.[103]
  • 22–29 August: British carrier aircraft repeatedly attack Tipitz during Operation Goodwood, but inflict only light damage. U-354 sank HMS Bickerton and damaged HMS Nabob from the British fleet before being sunk by escorts on 24 August.[103]

USCG cutter Northland operating off Greenland.

  • 1 September 1944: The German weather ship Kehdingen scuttled off Greenland when found by USCGC Northland.[104]
  • 2 September 1944: Convoy RA 59 escorts sank U-394.[103]
  • 6 September 1944: Soviet minesweeper T-116 sank U-362 in the Kara Sea.[105]
  • 16 September 1944: Soviet aircraft sank 3668-ton Wolsum at Kirkenes. Another attack damaged 5434-ton Friesenland off North Cape on 20 September.[106]
  • 23 September 1944: U-957 sank Soviet patrol vessel Brilliant in the Kara Sea, and U-739 sank Soviet minesweeper T-120 with a G7es torpedo on 24 September.[107]
  • 29 September 1944: U-310 sank 7219-ton Samsuva and Liberty ship Edward H. Crockett from convoy RA 60. No. 813 Naval Air Squadron Swordfish F of HMS Campania sank U-921 on 30 September.[108]
  • 11 October 1944: Soviet torpedo cutters sank German minesweeper M-303 off Kiberg.[109]
  • 16 October 1944: United States Coast Guard icebreaker Eastwind captured the German weather ship Externsteine off Greenland.[104]
  • 21 October 1944: Soviet torpedo cutters sank German minesweeper M-31 off Honningsvåg.[110]

Soviet Northern Fleet ships carrying landing parties for the Petsamo–Kirkenes Offensive.

  • 26 October 1944: Soviet naval infantry captured Kirkenes with the support of Soviet Northern Fleet destroyers and smaller warships.[111]
  • 2 November 1944: U-295 damaged convoy RA 61 escort HMS Mounsey with a G7se torpedo. HMS Venturer sank U-771 off Lofoten on 11 November.[112]
  • 12 November 1944: Tirpitz was capsized by Royal Air Force Avro Lancasters.[113]
  • 2 December 1944: U-363 sank 1123-ton Proletari off Finland.[114]
  • 9 December 1944: Convoy RA 62 escorts sank U-387 at the mouth of Kola Bay. U-365 torpedoed HMS Cassandra on 11 December before being sunk by No. 813 Naval Air Squadron Swordfish from HMS Campania on 13 December.[114]
  • 30 December 1944: U-956 torpedoed 7176-ton Tbilisi off Kola Bay.[115]
  • December 1944: The 14th U-boat Flotilla was established at Narvik to absorb displaced U-boats as bases on the French coast were captured by Allied troops.[116]
  • 16 January 1945: U-997 sank Dejatelnyj with a G7se torpedo at the mouth of Kola Bay.[117]
  • 13 February 1945: KG 26 Ju 88 and 188 torpedo bombers withdrawn from France following the Normandy landings made unsuccessful attacks against convoy JW 64.[3] U-992 sank convoy escort HMS Denbigh Castle at the mouth of Kola Bay.[118]
  • 14 February 1945: U-boats sank 8129-ton Norfjell and Liberty ship Horace Gray from convoy BK 3 outside Kola Bay.[119]
  • 17 February 1945: Escorts clearing Kola Bay for the departure of convoy RA 64 sank U-425.[119] U-711 sank HMS Bluebell and U-968 damaged Liberty ship Thomas Scott and HMS Lark with G7se torpedoes.[120] On 23 February KG 26 sank Liberty ship Henry Bacon – the last ship to be sunk by German aircraft in the second world war.[119]
  • 20 March 1945: U-968 torpedoed Liberty ships Horace Bushnell and Thomas Donaldson from convoy JW 65 and convoy escort HMS Lapwing with a G7se torpedo.[121]
  • 22 April 1945: U-997 sank 1603-ton Onega and torpedoed 4287-ton Idefjord from convoy PK 9.[122]
  • 29 April 1945: In the last trade convoy battle of the Second World War, U-968 sank HMS Goodall at the mouth of Kola Bay as convoy JW 66 escorts sank U-307 and U-286.[123]


  1. Drent, Jan Commercial Shipping on the Northern Sea Route p. 4
  2. Wartime navigation over the ocean within the Arctic Circle should not be confused with the Arctic Ocean as it may have subsequently been defined to exclude areas within the Arctic Circle.
  3. 3.0 3.1 Wood & Gunston pp. 64–75
  4. Vail Motter pp. 481&482
  5. "Arming the Soviets". Columbia Magazine. Retrieved 2012-07-13. 
  6. Rohwer & Hummelchen p. 3
  7. Rohwer & Hummelchen p. 8
  8. Grove pp. 7–35
  9. Brown p. 31
  10. Brown p. 32
  11. Rohwer & Hummelchen pp. 21&22
  12. Kemp pp. 65–67
  13. Muggenthaler pp. 54–59
  14. Rohwer & Hummelchen p. 30
  15. Rohwer & Hummelchen p. 29
  16. Cressman p. 29
  17. Rohwer & Hummelchen p. 32
  18. Rohwer & Hummelchen p. 39
  19. Rohwer & Hummelchen p. 53
  20. Rohwer & Hummelchen p. 58
  21. Rohwer & Hummelchen pp. 62&71
  22. Rohwer & Hummelchen pp. 70&71
  23. Ruge p. 222
  24. 24.0 24.1 Rohwer & Hummelchen p. 73
  25. 25.0 25.1 Brown p. 48
  26. 26.0 26.1 26.2 Rohwer & Hummelchen p. 75
  27. Rohwer & Hummelchen p. 76
  28. Rohwer & Hummelchen pp. 76&77
  29. 29.0 29.1 Rohwer & Hummelchen p. 77
  30. Brown p. 49
  31. "Patrols by U-571". Guðmundur Helgason. Retrieved 2012-07-04. 
  32. Rohwer & Hummelchen p. 87
  33. Rohwer & Hummelchen p. 90
  34. 34.0 34.1 Rohwer & Hummelchen p. 89
  35. Rohwer & Hummelchen pp. 93&96
  36. 36.0 36.1 Rohwer & Hummelchen p. 101
  37. Rohwer & Hummelchen pp. 97&101
  38. Rohwer & Hummelchen p. 103
  39. Rohwer & Hummelchen p. 106
  40. Rohwer & Hummelchen p. 111
  41. Rohwer & Hummelchen p. 110
  42. Rohwer & Hummelchen p. 114
  43. Brown p. 56
  44. Irving pp. 4–6
  45. Rohwer & Hummelchen p. 117
  46. Rohwer & Hummelchen pp. 120&123
  47. Rohwer & Hummelchen p. 123
  48. Rohwer & Hummelchen pp. 121&125
  49. Grove pp. 117–121
  50. 50.0 50.1 Rohwer & Hummelchen p. 131
  51. Kemp p. 237
  52. 52.0 52.1 52.2 Rohwer & Hummelchen p. 134
  53. 53.0 53.1 Rohwer & Hummelchen p. 137
  54. Brown p. 61
  55. Rohwer & Hummelchen p. 139
  56. Morison p. 166
  57. "11th Flotilla". Guðmundur Helgason. Retrieved 2012-06-24. 
  58. Rohwer & Hummelchen p. 140
  59. Rohwer & Hummelchen p. 141
  60. Rohwer & Hummelchen p. 143
  61. Brown p. 65
  62. Irving
  63. Rohwer & Hummelchen p. 151
  64. Rohwer & Hummelchen p. 152
  65. Ruge p. 275
  66. Brown p. 68
  67. Macintyre pp. 292–312
  68. Macintyre pp. 312–317
  69. Rohwer & Hummelchen p. 173
  70. Rohwer & Hummelchen p. 174
  71. Brown p. 75
  72. Rohwer & Hummelchen p. 178
  73. Stephen pp. 179–197
  74. Rohwer & Hummelchen p. 185
  75. Rohwer & Hummelchen p. 189
  76. Rohwer & Hummelchen p. 191
  77. 77.0 77.1 Rohwer & Hummelchen p. 195
  78. Cressman p. 152
  79. Rohwer & Hummelchen p. 201
  80. Rohwer & Hummelchen p. 205
  81. "13th Flotilla". Guðmundur Helgason. Retrieved 2012-06-24. 
  82. Rohwer & Hummelchen p. 221
  83. 83.0 83.1 83.2 Rohwer & Hummelchen p. 225
  84. Stephen p. 198
  85. Brown p. 88
  86. Grove pp. 123–131
  87. Cressman p. 185
  88. Stephen pp. 198–218
  89. Rohwer & Hummelchen p. 256
  90. Rohwer & Hummelchen p. 257
  91. 91.0 91.1 Rohwer & Hummelchen p. 262
  92. Brown p. 105
  93. 93.0 93.1 Rohwer & Hummelchen p. 264
  94. 94.0 94.1 Grove pp. 131–136
  95. Rohwer & Hummelchen pp. 272–273
  96. Rohwer & Hummelchen p. 276
  97. Rohwer & Hummelchen p. 279
  98. Rohwer & Hummelchen p. 285
  99. Brown (1977), p. 37
  100. Grove p. 137
  101. Brown p. 118
  102. 102.0 102.1 Rohwer & Hummelchen p. 299
  103. 103.0 103.1 103.2 Rohwer & Hummelchen p. 298
  104. 104.0 104.1 Ruge pp. 286&287
  105. Rohwer & Hummelchen p. 296
  106. Rohwer & Hummelchen p. 303
  107. Brown pp. 122&123
  108. Taylor p. 142
  109. Brown p. 124
  110. Brown p. 125
  111. Rohwer & Hummelchen p. 309
  112. Rohwer & Hummelchen p. 313
  113. Grove p. 139
  114. 114.0 114.1 Rohwer & Hummelchen p. 318
  115. Rohwer & Hummelchen p. 322
  116. "14th Flotilla". Guðmundur Helgason. Retrieved 2012-06-24. 
  117. Brown p. 138
  118. Brown p. 139
  119. 119.0 119.1 119.2 Rohwer & Hummelchen p. 334
  120. Brown pp. 139&140
  121. Macintyre p. 444
  122. Rohwer & Hummelchen p. 348
  123. Rohwer & Hummelchen p. 350


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