On 18 March 1943, "Sahib" commenced another patrol, north of Sicily. Six days later, she torpedoed and sank the Italian merchant "Tosca" west of Cape Calava, Sicily. On 27 March, "Sahib" closed in on the coastal town of Milazzo, and fired tree torpedoes into its harbour. The old merchant ship "Sidamo" was hit twice and sank with its cargo of salt; another ship was slightly damaged as well. "Sahib" next attacked five sailing vessels with her deck gun on 30 March; she sank "Santa Maria Del Salvazione" and "San Vincenzo" and damaged two others. "Sahib" then returned to Algiers on 4 April.