At 00.21 hours, U-38 sinks Finnish steamer SS Signe, a straggler from convoy HN-23A (all 19 hands lost). Destroyer HMS Sikh, escorting convoy HN-23A, hears the explosion and searches for survivors. http://www.uboat.net/allies/merchants/ships/305.html http://www.hmscavalier.org.uk/G82/
British submarines start taking up positions to execute Vice-Admiral Horton’s plan to intercept German warships leaving naval bases at Heligoland Bight, Kiel, Wilhelmshaven, Cuxhaven & Swinemünde. He correctly guesses that they will be bound for Norway. HMS Unity departs Blyth submarine base, Northumberland, to patrol Heligoland Bight. HMS Sunfish departs Harwich naval base for the Kattegat, between Denmark and Sweden.