British destroyer HMS Glowworm discovered German Navy Marine Gruppe 1 at 0800 hours and was fired upon by cruiser Admiral Hipper at close range. Outgunned, Glowworm's captain decided to ram the German cruiser, which caused heavy damage for Admiral Hipper but it also led to her sinking, which killed 118, including commanding officer Lieutenant Commander Gerard Broadmead Roope, who received a posthumous Victoria Cross, the first of the war; captain Hellmuth Heye of Admiral Hipper spoke highly of Roope's courage. Off Narvik, British destroyers Esk, Icarus, Impulsive, and Ivanhoe mined Vestfjord at 0500 hours in preparation for landings by British and French forces at Namsos, Narvik, and Andalsnes; Norway was informed of this action at 0600 hours. Meanwhile, German Navy Marine Gruppe 3 departed Wilhelmshaven, Germany for Bergen, Norway (1,900 troops aboard 2 cruisers, 1 transport, 1 minelayer, and 5 torpedo boats), Marine Gruppe 4 and Marine Gruppe 6 departed Cuxhaven, Germany for southern Norway (1,250 troops), and Marine Gruppe 5 departed Swinemünde, Germany for Oslo, Norway (2,000 troops aboard 3 cruisers, 8 minesweepers, and 3 torpedo boats). In Britain, Vice Admiral Max Horton dispatched 6 more submarines to intercept these additional German invasion fleets; many of his peers were against this decision, believe there would not be any additional fleets being dispatched by the Germans. Among the 6 newly dispatched British submarines included HMS Ursula, HMS Triad, and HMS Sterlet, which departed to patrol the Skagerrak between Denmark and Norway.
