British cruiser HMS London departs Scapa Flow carrying the Anglo American supply mission (Lord Beaverbrook and Averell Harriman) to Archangel, USSR, escorted by both British and Soviet destroyers. Beaverbrook and Harriman will arrive on September 27 and travel to Moscow to discuss Lend-Lease with the Soviet leaders.
At 2.33 AM 200 miles East of Iceland, U-562 sinks British SS Erna III (all 25 hands lost). U-103 and U-68 attack convoy SL-87 300 miles West of the Canary Islands. At 2.22 AM, U-68 damages British MV Silverbelle which sinks on September 29. At 11.46 PM, U-103 sinks British ships MV Edward (all 63 rescued) and SS Niceto de Larrinaga Blyden (2 killed, 53 rescued).
In the Black Sea near Odessa, Stukas bomb Soviet destroyers Bezuprechny (at 1.00 PM, badly damaged and towed to Odessa), Besposhchadny (at 5.30 PM, slight damage by near misses from 84 bombs) and Boyki (minor damage).
Operation Supercharge. Overnight, British minelaying cruiser HMS Abdiel and destroyers HMS Kandahar, Jaguar & Griffin make the round trip from Alexandria to Tobruk carrying troops and supplies.