Battle of the Atlantic
- The Greek steamer Asteria (3313t) sinks on a mine 9.5 miles northeast of Haisborough Light. This is a result of the German destroyer minelaying operation the night of the 10th. 14 of the crew are lost, 11 are rescued.
- U-26 sinks the Norwegian steamer Enid (1140t) about 6 miles off Muckle Flugga and badly damages the British steamer Polzella (4751t) in the same area. The Polzella sinks the next day without a trace with the loss of her entire crew. The entire crew of the Enid is rescued by the Danish steamer Kina and the British fishing vessel Granada.
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]Finland - Winter War
Day 49
On the Ladoga Karelia the Finnish 12th Div launches an offensive in the Uomaa sector. The IV Army Corps is forced to stop its offensive in the Pitkäranta area. The Finns lack the strength to drive to the border. On the central Isthmus in the Lähde road sector, Russian artillery inflicts serious damage on 'Fort Poppius', a concrete fortress that can house 26 men. The Finns recapture Kursu, southwest of Salla.
Over the Isthmus Fokker fighters from 24 Squadron shoot down 8 enemy SB bombers. Russian bombers hit Turku, Hanko, Lappeenranta, Koivisto and the south harbor in Viipuri.
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