to 27, 1942 she again patrolled of Ras Aamer. From 11 to 23 February 1942 she was deployed to an area off the coast of Cyrenaica. From 8 to 21 April 1942 again she was again deployed off the coast of Cyrenaica. From 1 June to 9 June 1942 and then again from June 15 to 18, 1942 Malachite was posted northwest of Algiers. She was then relocated to patrol off Cape Blanc from 22 to 24 June. On July 16, 1942 Malachite was sent to patrol along the Tunisian coast, however had to return to the base the next day due to engine failure. During the period of repairs and maintenance a new commander was appointed, as captain Alpinolo Cinti took over the command. From 20 to 26 November 1942 Malachite was deployed along the Algerian coast. At 4:11 on November 24 during a raid on Philippeville's harbor she launched two torpedoes at three merchants. An explosion was heard, and at 04:15 she launched a two more torpedoes at a big tanker. Again, explosions were heard, but British post-war documents are silent on the sustained damage. The submarine returned to Cagliari where it would be temporarily assigned to. From 16 to 24 December 1942 she patrolled an area between the island of La Galite and Cape de Fer. She patrolled off the island of La Galite on January 4 and 5 1943 again. On January 21 Malachite was deployed to an area between Cape Carbon and Cape Bougaroun. At 4:55 on January 22 she sighted an incoming convoy heading to Bona, Algeria. At 05:18 she fired four torpedoes, and dove to avoid an attack by the escorts. Two explosions were heard, but again British post-war documents contain no mention of this attack. On February 2, 1943 Malachite left Cagliari with a group of 11 commandos from the battalion "San Marco" whose goal was to blow up a railway bridge in El Kejur, Algeria. In the evening of February 6, the commandos landed by Cape Matifu, while the submarine remained on station waiting for their return. An explosion was heard some time later, and a signal rocket was launched indicating success of the operation. There was gunfire heard on the beach shortly thereafter, and none of the commandos returned. The submarine waited until 6:30 on February 7 and then left to avoid being discovered by the enemy escorts. Malachite was