After working up at Scapa Flow followed by some repairs on the Thames she escorted a convoy to Gibraltar arriving on 2 November 1942. She then joined the 58th Destroyer Division escorting Operation Torch convoys. While escorting the British convoy MKF-4 off the Algerian coast, Blean was torpedoed by on 11 December 1942 north-west of Oran. The U-boat aimed one torpedo against her and then one against the convoy, but both hit Blean and she sank within four minutes with the loss of 89 men.
