On 21 February 1942 Wanklyn took command again. Simpson ordered her to participate in operations of the Libyan coast. On the morning of 23 February, "Upholder" took up her position off Misurata. Wanklyn pursued two ships until he realised they were destroyers. On 26 February "Upholder" picked up a contact of Sidi Blal. He closed to attack on the surface before appreciating his error—his quarry was another destroyer. Wanklyn ordered the boat to dive. Apparently they had sailed so close Wanklyn saw the sparkle of a cigarette thrown from the destroyer. Off Tripoli "Upholder" intercepted the transport "Tembien" and her single destroyer escort. Wanklyn ordered three torpedoes fired and three hit. The cargo ship sank in twenty minutes. From 28 February—3 March, no more vessels were encountered and Wanklyn docked in Malta on 5 March.