At 3.16 AM, U-59 sinks Norwegian steamer SS Navarra with 1 torpedo 20 miles off the Scottish coast. Six die in the explosion and another 6 when their lifeboat capsizes. 14 survivors in one lifeboat are picked up by Finnish steamer Atlas and landed at Kirkwall, Orkney Islands.
British submarines HMS Truant & Seal depart Rosyth naval dockyard, Scotland, for the Norwegian coast. HMS Tarpon is ordered to patrol the German coast near Heligoland Bight.
After dark, Marine Gruppe 1 departs Cuxhaven for Narvik (10 destroyers carrying 2000 troops, plus battleships Scharnhorst & Gneisenau). Marine Gruppe 2 departs Wesermünde for Trondheim (cruiser Admiral Hipper & 4 destroyers carrying 1700 troops). In the North Sea between Narvik & Trondheim, British destroyer HMS Glowworm stops to rescue a crewman lost overboard in heavy seas & loses sight of HMS Renown and the minelaying squadron. http://www.uboat.net/allies/warships/ship/4394.html
U-1 disappears in the North Sea, probably lost to a British mine (all 24 hands lost).