German pocket battleship Lützow, pocket battleship Admiral Scheer, and six destroyers departed from Narvik, Norway to intercept Allied convoy PQ-17 in the Barents Sea; en route, Lützow and three destroyers ran aground. The group was detected by the British and the Soviets, leading to the dispatching of 9 British and 7 Soviet submarines to intercept the German fleet; en route, Soviet submarines D-3 and M-176 hit German naval mines and sank.
