Convoy PQ 6

Arctic Ocean Between Greenland and Norway are some of the most stormy waters of the world's oceans, of water under gales full of snow, sleet and hail. Around the North Cape and the Barents Sea the sea temperature rarely rises about 4° Celsius and a man in the water would probably die unless rescued immediately. The cold water and air made spray freeze on the superstructure of ships, which had to be removed quickly to avoid the ship becoming top-heavy. The cold Arctic water is met by the Gulf Stream, warm water from the Gulf of Mexico, which becomes the North Atlantic Drift. Arriving at the south-west of England, the drift moves between Scotland and Iceland. North of Norway the drift splits, one stream of the North Atlantic Drift goes north of Bear Island to Svalbard and the southern stream follows the coast of Murmansk into the Barents Sea. The mingling of cold Arctic water and warmer water of higher salinity generates thick banks of fog for convoys to hide in but the waters drastically reduce the effectiveness of Asdic as U-boats moved in waters of differing temperatures and density. The phenomenon is at its most disruptive of submarine detection near the Kola Inlet. In winter, polar ice can form as far south as of the North Cape forcing ships closer to Luftwaffe air bases or being able to sail further out to sea in summer when the ice can recede northwards as far as Svalbard. The region is in perpetual darkness in winter and permanent daylight in the summer which makes air reconnaissance almost impossible or easy. Arctic convoys A convoy was defined as at least one merchant ship sailing under the protection of at least one warship. At first the British had intended to run convoys to Russia on a forty-day cycle (the number of days between convoy departures) during the winter of 1941–1942 but this was shortened to a ten-day cycle. The round trip to Murmansk for warships was three weeks and each convoy needed a cruiser and two destroyers, which severely depleted the Home Fleet. Convoys left port and rendezvoused with the escorts at sea. A cruiser provided distant cover from a position to the west of Bear Island. Air support was limited to 330 Squadron and 269 Squadron, RAF Coastal Command from Iceland, with some help from anti-submarine patrols from Sullom Voe, in Shetland, along the coast of Norway. Anti-submarine trawlers escorted the convoys on the first part of the outbound journey. Built for Arctic conditions, the trawlers were coal-burning ships with sufficient endurance. The trawlers were commanded by their peacetime crews and captains with the rank of Skipper, Royal Naval Reserve (RNR), who were used to Arctic conditions, supplemented by anti-submarine specialists of the Royal Naval Volunteer Reserve (RNVR). British minesweepers based at Arkhangelsk met the convoys to join the escort for the remainder of the voyage. By late 1941, the convoy system used in the Atlantic had been established on the Arctic run; a convoy commodore briefed the ships' masters and signals officers on arrangements for the management of the convoy, that sailed in a formation of long rows of short columns. The commodore was usually a retired naval officer or from the Royal Naval Reserve, his merchant ship flew a white pendant with a blue cross. The commodore was assisted by a Naval signals party of four men, who used lamps, semaphore flags and telescopes to pass signals in code. Codebooks were carried in a weighted bag which was to be dumped overboard to prevent capture. In large convoys, the commodore had a vice- and rear-commodore with whom he directed the speed, course and zig-zagging of the merchant ships and liaised with the escort commander. In October 1941, the Prime Minister, Winston Churchill, had promised an Arctic convoy to the USSR every ten days. The unloading capacity of Arkhangelsk was , Vladivostok (Pacific Route) and in the Persian Gulf (for the Persian Corridor route) ports. The first convoy was due at Murmansk around 12 October and the next convoy was to depart Iceland on 22 October. A motley of British, Allied and neutral shipping, loaded with military stores and raw materials for the Soviet war effort would be assembled at Hvalfjörður (Hvalfiord) in Iceland, convenient for ships from both sides of the Atlantic. In winter, due to the polar ice expanding southwards, the convoy route ran closer to Norway. The voyage was between each way, taking at least three weeks for a round trip. First Protocol The Soviet leaders needed to replace the colossal losses of military equipment lost after the German invasion, especially when Soviet war industries were being moved out of the war zone and emphasised tank and aircraft deliveries. Machine tools, steel and aluminium was needed to replace indigenous resources lost in the invasion. The pressure on the civilian sector of the economy needed to be limited by food deliveries. The Soviets wanted to concentrate the resources that remained on items that the Soviet war economy that had the greatest comparative advantage over the German economy. Aluminium imports allowed aircraft production to a far greater extent than would have been possible using local sources and tank production was emphasised at the expense of lorries and food supplies were squeezed by reliance on what could be obtained from lend–lease. At the Moscow Conference, it was acknowledged that 1.5 million tons of shipping was needed to transport the supplies of the First Protocol and that Soviet sources could provide less than 10 per cent of the carrying capacity. The British and Americans accepted that the onus was on them to find most of the shipping, despite their commitments in other theatres. Churchill made a commitment to send a convoy to the Arctic ports of the USSR every ten days and to deliver a month from July 1942 to January 1943, followed by and another more than already promised. In November, the US president, Franklin D. Roosevelt, ordered Admiral Emory Land of the US Maritime Commission and then the head of the War Shipping Administration that deliveries to Russia should only be limited by 'insurmountable difficulties'. The first convoy was due at Murmansk around 12 October and the next convoy was to depart Iceland on 22 October. A motley of British, Allied and neutral shipping loaded with military stores and raw materials for the Soviet war effort would be assembled at Hvalfjörður in Iceland, convenient for ships from both sides of the Atlantic. From Operation Dervish to Convoy PQ 11, the supplies to the USSR were mostly British, in British ships defended by the Royal Navy. A fighter force that could defend Murmansk was delivered that protected the Arctic ports and railways into the hinterland. British supplied aircraft and tanks reinforced the Russian defences of Leningrad and Moscow from December 1941. The tanks and aircraft did not save Moscow but were important in the Soviet counter-offensive. The was by then reduced to 600 operational aircraft on the Eastern Front, to an extent a consequence of being sent to the Mediterranean against the British. Tanks and aircraft supplied by the British helped the Soviet counter-offensive force back the Germans further than might have been possible. In January and February 1941, deliveries of tanks and aircraft allowed the Russians to have a margin of safety should the Germans attempt to counter-attack. ==Signals intelligence==

Bletchley Park The British Government Code and Cypher School (GC&CS) based at Bletchley Park housed a small industry of code-breakers and traffic analysts. By June 1941, the German Enigma machine Home Waters (Heimish) settings used by surface ships and U-boats could quickly be read. On 1 February 1942, the Enigma machines used in U-boats in the Atlantic and Mediterranean were changed but German ships and the U-boats in Arctic waters continued with the older Heimish (Hydra from 1942, Dolphin to the British). By mid-1941, British Y-stations were able to read Luftwaffe W/T transmissions and give advance warning of Luftwaffe operations. In 1941, naval Headache personnel with receivers to eavesdrop on Luftwaffe wireless transmissions were embarked on warships. B-Dienst The rival German Beobachtungsdienst (B-Dienst, Observation Service) of the Kriegsmarine Marinenachrichtendienst (MND, Naval Intelligence Service) had broken several Admiralty codes and cyphers by 1939, which were used to help Kriegsmarine ships elude British forces and provide opportunities for surprise attacks. From June to August 1940, six British submarines were sunk in the Skaggerak using information gleaned from British wireless signals. In 1941, B-Dienst read signals from the Commander in Chief Western Approaches informing convoys of areas patrolled by U-boats, enabling the submarines to move into "safe" zones. (B-Dienst broke Naval Cypher No 3 in February 1942 and by March was reading up to 80 per cent of the traffic. By coincidence, the British lost access to the Atlantic U-boat communications with the introduction of the Shark cypher and had no information to send in Cypher No 3 which might compromise Ultra. ==Prelude==

Kriegsmarine German naval forces in Norway were commanded by Hermann Böhm, the . Two U-boats were based in Norway in July 1941, four in September, five in December and four in January 1942. By mid-February twenty U-boats were anticipated in the region, with six based in Norway, two in Narvik or Tromsø, two at Trondheim and two at Bergen. Hitler contemplated establishing a unified command but decided against it. The German battleship arrived at Trondheim on 16 January, the first ship of a general transfer of surface ships to Norway. British convoys to Russia had received little attention, since they averaged only eight ships each and the long Arctic winter nights negated even the limited effort that was available. 5 In mid-1941, (Air Fleet 5) had been re-organised for Operation Barbarossa when (Air Region Norway) was headquartered in Oslo. (Air Commander Stavanger) the centre and north of Norway, (Fighter Leader Norway) commanded the fighter force and ( [colonel] Andreas Nielsen) in the far north had airfields at Kirkenes and Banak. The Air Fleet had 180 aircraft, sixty of which were reserved for operations on the Karelian Front against the Red Army. The distance from Banak to Arkhangelsk was and had only ten Junkers Ju 88 bombers of Kampfgeschwader 30, thirty Stukas, ten Messerschmitt Bf 109 fighters of Jagdgeschwader 77, five Messerschmitt Bf 110 heavy fighters of Zerstörergeschwader 76, ten reconnaissance aircraft and an anti-aircraft battalion. Sixty aircraft were far from adequate in such a climate and terrain where "there is no favourable season for operations" (Earl F. Ziemke). The emphasis of air operations changed from army support to anti-shipping operations as Allied Arctic convoys became more frequent. Hubert Schmundt, the noted gloomily on 22 December 1941 that the number long-range reconnaissance aircraft was exiguous and from 1 to 15 December only two Ju 88 sorties had been possible. After the Lofoten Raids (Operation Claymore) Schmundt wanted to transfer aircraft to northern Norway but its commander, Hans-Jürgen Stumpff, was reluctant to deplete the defences of western Norway. Despite this some air units were transferred, a catapult ship (), , was sent to northern Norway and Heinkel He 115 floatplane torpedo-bombers, of 1./406 was transferred to Sola. By the end of 1941, III Gruppe, KG 30 had been transferred to Norway and in the new year, another of Focke-Wulf Fw 200 Kondors from Kampfgeschwader 40 (KG 40) had arrived. was also expected to receive a comprising three (squadrons) of Heinkel He 111 torpedo-bombers. Air-sea rescue The Luftwaffe Sea Rescue Service () along with the , the Norwegian Society for Sea Rescue (RS) and ships on passage, recovered aircrew and shipwrecked sailors. The service comprised at Stavanger, covering Bergen and Trondheim with at Kirkenes for Tromsø, Billefjord and Kirkenes. Co-operation was as important in rescues as it was in anti-shipping operations if people were to be saved before they succumbed to the climate and severe weather. The sea rescue aircraft comprised Heinkel He 59 floatplanes with Dornier Do 18 and Dornier Do 24 seaplanes. (OKL, the high command of the Luftwaffe) was not able to increase the number of search and rescue aircraft in Norway, due to a general shortage of aircraft and crews, despite Stumpff pointing out that coming down in such cold waters required extremely swift recovery and that his crews "must be given a chance of rescue" or morale could not be maintained. Convoy PQ 6 The convoy consisted of the British , , and (rescue ship) a Norwegian freighter, , two Panamanian ships, and the tanker and the Soviet . The Convoy Commodore was embarked in Elona and the Vice-Commodore in Empire Mavis; the ships sailed on 8 December. SS Explorer Explorer had sailed from Loch Ewe on 20 November, loaded with military equipment; the crew had been issued with Arctic clothing, a fur-lined duffel coat, two pairs of heavy woollen long johns, a submariners' polo-necked jersey, mittens and thick sea-boot socks, all looked on with suspicion by the crew. Merchant navy pay had recently been increased from £8 to £24 a month by the addition of danger money. Explorer carried Defensively equipped merchant ship (Dems) gunners and the crew had received basic gunnery training at HMS President. While at Hvalfjörður cargo was taken on from another ship and two of the crew got frostbite in their hands. ==Voyage==

8–11 December The convoy departed Hvalfjörður on 8 December 1941 in company with the Iceland local escort, the trawlers , and , from 8 to 10 December. The convoy soon ran into a storm and in the dark, Harmatris lagged behind. The captain, R. W. Brundle, hove to for safety. a , had sailed from Scapa Flow in the Orkney Islands on 7 December, was caught by the same storm and reached Seyðisfjörður (Seidisfjord) on the east coast on Iceland on 10 December to refuel. The cruiser sailed at with the destroyers and , the storm having abated by then. The cruiser and destroyers joined the convoy on 11 December, taking over from the trawler Hugh Walpole, the sole remaining local escort, that returned to Iceland. SS Harmatris On 10 December steam was seen rising over No. 4 'tween deck (storage space between the hold and the main deck) and when the hatch corner was lifted a lorry could be seen on fire, sliding around as the ship moved and setting other cargo alight, made worse by the of cordite and small-arms ammunition loaded in the hold below the 'tween deck. The area was smothered with steam but this failed to extinguish the fire. The Mate, wearing the only smoke helmet, dragged a hose into the hold and taking turns with the chief Steward fought the fire. Brundle broke wireless silence to send an SOS and the rescue ship Zamalek turned back from the convoy to help. The crew fought the fire during the night and eventually put it out; not needed, Zamalek sailed back to Iceland. Hvalfjörður was windward (upwind) and had no harbour facilities and the convoy commodore allowed the ship to make for the Clyde, where Harmatris spent Christmas and departed for Hvalfjörður again on 26 December, arriving on 1 January 1942. 12–13 December The weather continued to be fine, the temperature close to freezing point but despite this, the merchant ships found station keeping difficult. On 13 December, a Saturday, to the north of the 72nd parallel in the short winter day, Edinburgh left the convoy for gunnery practice, firing star shells for the Oerlikon gunners to fire at, until night fell and the cruiser returned to the convoy, by then having reached its most northerly point, west of Bear Island () where the aurora borealis appeared. Work continued on the merchant ships, Explorer had a four-man deck watch, one more than in peacetime who took turns as helmsman, lookout and two on the gun positions. The four men not on watch spent their time clearing ice, a job that the warships could put far more men on. 14–23 December As the convoy turned south, Edinburgh refuelled Escapade and the boiler fuel was so cold that it coagulated. Refuelling parties on both ships kept watch on the fuel pipe during the short twilight of the winter day. On 17 December, off the Murman coast, Edinburgh received reports that as the Eastern local escort, the s and , swept the approaches to the Kola Inlet, they had encountered German destroyers. The s , , and of the 8th Destroyer Flotilla ( ) were out minelaying as the first attempt by the to attack an Arctic convoy. The British minesweepers were mistakenly identified as G-class destroyers and were lucky to escape in the gloom of the winter day and behind a smoke screen but the German destroyers fired star shell and managed four hits on Speedy. The minesweeper had to return to the Kola Inlet while Hazard remained to meet the convoy. As soon as the alarm was raised, , a , at Murmansk since 13 December, having escorted Convoy PQ 5 and the Soviet s and sailed to attack the destroyers but found nothing. The minesweeper sailed to replace Speedy, met Escapade and with Hazard joined the convoy. When Convoy PQ 6 was off the White Sea Throat () the entrance to the White Sea, Edinburgh, Echo and Escapade left the convoy and turned towards Murmansk with the freighters Dekabrist and El Mirlo, as the minesweepers led the remainder of the convoy into Molotovsk (now Severodvinsk). The ships making for Murmansk sailed into a storm and El Mirlo disappeared. Escapade was sent to look for El Mirlo and Echo escorted Dekabrist towards Murmansk at . Not long afterwards, gunfire was heard, Edinburgh turned in pursuit and found Dekabrist and Echo under attack by two Ju 88 bombers. Dekabrist was near-missed and was hit by two unexploded bombs that rolled around the deck. As Echo accelerated, two men were swept overboard. Edinburgh and six Soviet Air Forces (VVS) Hurricane fighters chased off the bombers. In the afternoon the ships anchored off Murmansk and found that El Mirlo was already there. The winter freeze had started and on 20 December the ships of Convoy QP 4 passed in the opposite direction behind the icebreakers Stalin and Lenin and another icebreaker led the rest of Convoy PQ 6 into harbour, the ships arriving on 23 November. ==Aftermath==

Analysis The convoy arrived at the where icebreakers kept a passage open until 12 December. The closing of the White Sea by ice meant that subsequent convoys, beginning with Convoy PQ 7 would have to use Murmansk, Admiral Golovko wrote in his diary for 10 December, and on 25 December wrote, German knowledge of the Arctic convoys was so limited that there were no attacks by the or the from Operation Dervish to Convoy PQ 5, the having only five torpedo boats (small destroyers) not suited to operations in Arctic waters. The convoy was part of a run of outbound convoys to Convoy PQ 11 that had little difficulty apart from the weather, in reaching the Arctic north of the USSR. These convoys delivered 75 ships out of 77, with one early return and one loss to a U-boat. Casualties On Echo two members of the crew were swept overboard and lost at sea. Subsequent events The ships were frozen in for the winter along with their icebreaker, in conditions that became desperate. The water, washing facilities and the toilets froze and scabies broke out amongst the crews. The ships were unloaded by German prisoners of war who scavenged for food that the crews threw overboard because it was in so poor a state. Despite their difficulties, the Russians brought Yak carcasses alongside the ships on sleds. ==British order of battle==

Convoyed ships Escorts ==German order of battle==