Operation Compass. Australian 6th Division continues perfecting tactics to breach Italian defenses at Bardia while RAF bombs these positions as well as Italian airbases at Tobruk, Derna & Benina. British anti-submarine trawler HMT Bandolero sinks in a collision with Australian destroyer HMAS Waterhen off Sollum, Egypt (no casualties). HMAS Waterhen is repaired at Port Taufiq on the Suez Canal (completed in January 1941). Australian destroyer HMAS Voyager captures Italian ketch Zingarella, transporting British POWs from Bardia to Tobruk. Zingarella will serve in the Royal Navy as a store carrier for the rest of the war.
Destroyer HMS Venomous hits a mine off Liverpool (under repair at Liverpool until February 18 1941).
British steamers Calcium and Sodium collide in the North Sea after Calcium hits a mine (1 killed). Calcium ultimately sinks.