Convoy PQ 16 was an Arctic convoy sent from Great Britain by the Western Allies to aid the Soviet Union during the Second World War. It sailed in May 1942, reaching the Soviet northern ports after five days of air attacks that left eight ships sunk and two damaged. 25 ships arrived safely.
In the winter and spring of 1942, US President Franklin D. Roosevelt and Soviet Union premier Joseph Stalin continually pressed for more convoys to Russia, to deliver War Stores to help them sustain their fight against Germany, despite the knowledge that the naval forces were stretched to the limit. Finally Stalin sent an urgent message to British Prime Minister Winston Churchill in May 1942 in which he said, "I am fully aware of the difficulties involved and of the sacrifices made by Great Britain in the matter (the Russian convoys). I feel, however, incumbent upon me to approach you with the request to take all possible measures in order to ensure the arrival of the above-mentioned materials in the USSR".
This convoy consisted of 35 merchant ships: 21 American, 4 Soviet, 8 British, 1 Dutch and one of Panamanian registry. It also had one auxiliary vessel, the CAM ship Empire Lawrence. The convoy was led by Commodore H. N. Gale in Ocean Voice.
The close escort was led by the destroyer HMS Ashanti (Cdr. RG Onslow) and consisted of the destroyers ORP Garland, HMS Volunteer , Achates, and Martin, the anti-aircraft ship HMS Alynbank, four Flower class corvettes, one minesweeper and four trawlers.