Atlantic · 27 Jun 1942 – 10 Jul 1942
Convoy PQ 17
PQ 17 was scattered on 4 July after the Admiralty feared a German surface attack. U-boats and Luftwaffe aircraft then sank 24 merchant ships; only 11 reached Soviet ports.
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Convoy PQ 17 sailed from Hvalfjörður, Iceland, on 27 June 1942, carrying supplies for the Soviet Union. The 35 merchant ships travelled under close escort, with heavier Allied ships assigned to cover them farther west. The convoy route ran through the Denmark Strait, then east along the northern edge of the ice before turning south toward Soviet ports. German forces located the convoy on 1 July and kept it under observation. Ice and damage forced ships to turn back; by the time the attacks intensified, 33 merchant ships continued east.
On 4 July, the Admiralty received reports that German surface ships, including the battleship Tirpitz, might be moving to intercept. It ordered the cruiser force to withdraw westward and told the convoy to disperse, then to scatter. The feared surface attack did not materialise: the German raid was cancelled. But the orders left the merchant ships separated from their escorts and exposed to air and submarine attacks. The covering force and close escort withdrew, while the scattered ships tried to make for Soviet ports independently.
The losses mounted rapidly after the dispersal. German aircraft and U-boats attacked ships across the Barents Sea; 12 merchant ships were sunk on 5 July alone, according to the National WWII Museum account. The Pan Atlantic was hit by bombs on 6 July and sank within minutes. Attacks continued through 10 July, when the last ships in the convoy’s main sequence were lost. One damaged merchant ship, Paulus Potter, was found abandoned and was sunk later, on 13 July, outside the stated battle dates.
Only 11 of the 35 merchant ships reached Arkhangelsk. The sources recorded 24 merchant ships sunk and 153 merchant seamen killed. Cargo losses included 3,350 vehicles, 430 tanks, 210 aircraft and 99,316 tons of general cargo. Figures for the convoy’s original size and some cargo totals differed between accounts; the order-of-battle and National WWII Museum sources gave 35 ships, while the BBC account gave 37. PQ 17’s losses led the Allies to suspend Arctic convoys until PQ 18 sailed in September 1942.
The German victory came from the destruction of the convoy’s cargo ships, not from a fleet engagement. The threatened German surface force never met the covering ships, but its reported movement helped prompt the withdrawal and dispersal orders. After PQ 17, Allied planners reconsidered how to protect Arctic convoys during the summer, when continuous daylight made ships easier to locate and attack.