Soviet submarine S-3, although under repair and unable to dive, attempts to escape from the Latvian port of Libau but is sunk by German motor torpedo boats S-60 and S-35 using 20mm cannon, hand grenades and depth charges. 2 other Soviet submarines (M-71 and M-80) and destroyer Lenin are also scuttled at Libau.
All day, German and Italian bombers attack British sloop HMS Auckland and Australian sloop HMAS Parramatta, escorting tanker Pass of Balmaha from Alexandria to Tobruk with 750 tons of aviation fuel. At 5.36 PM, HMS Auckland is hit by a bomb which destroys her stern and then capsizes (38 killed). 162 crew are rescued from the water by HMAS Parramatta, under continued dive bomb attack, before HMS Auckland explodes and sinks. Pass of Balmaha is damaged by near-misses and towed into Tobruk by Australian destroyer HMAS Waterhen.