Convoy PQ 3

Convoy PQ 3 was the fourth of the Arctic Convoys of the Second World War by which the Western Allies supplied the Soviet Union in its fight with Nazi Germany. The departure of Convoy PQ 3 was delayed for destroyers to repair weather damage and because of intelligence reports of an imminent sortie by the German battleship Tirpitz and the heavy cruiser Admiral Scheer.

The convoy sailed from Hvalfjord in Iceland on 9 November 1941 and arrived unhindered at Arkhangelsk on 22 November 1941 except for the British freighter SS Briarwood that suffered ice damage and returned to Iceland escorted by the trawler HMT Hamlet. On 28 November Convoy PQ 3 entered the Northern Dvina with Convoy PQ 4, a faster convoy that had caught up since leaving Iceland on 17 November.

Between Greenland and Norway are some of the most stormy waters of the world's oceans, 890 mi (1,440 km) 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. In winter, polar ice can form as far south as 50 mi (80 km) 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.

The Soviet authorities had claimed that the unloading capacity of Arkhangelsk was 300,000 long tons (300,000 t), Vladivostok 140,000 long tons (140,000 t) and 60,000 long tons (61,000 t) by the Persian Gulf route. When surveyed by British and US technicians, the capacity of the ten berths at Arkhangelsk was assessed as 90,000 long tons (91,000 t) and the same from Murmansk from its eight berths. By late 1941, the convoy system used in the Atlantic had been established on the Arctic run; a convoy commodore ensured that the ships' masters and signals officers attended a briefing before sailing to make arrangements for the management of the convoy, which sailed in a formation of long rows of short columns. The commodore was usually a retired naval officer, aboard a ship identified by 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, coded from books carried in a bag, weighted to be dumped overboard. In large convoys, the commodore was assisted by vice- and rear-commodores to direct the speed, course and zig-zagging of the merchant ships and liaise with the escort commander.

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, trawlers were coal-burning ships with sufficient endurance. The trawlers were operated 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. In October 1941, the unloading capacity of Arkhangelsk was 300,000 long tons (300,000 t), Vladivostok (in the Pacific) 140,000 long tons (140,000 t) and 60,000 long tons (61,000 t) 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 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 1,400 and 2,000 nmi (2,600 and 3,700 km; 1,600 and 2,300 mi) each way, taking at least three weeks for a round trip.

The Soviet leaders needed to replace the colossal losses of military equipment lost after Operation Barbarossa the German invasion began, 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.