"Voyager" commenced operations on 1 January 1940, initially as a convoy escort operating out of Alexandria. The ship was docked at Malta for refit during April. On 13 June and again on 19 June, "Voyager" attacked submarines without success, but on 27 June she attacked the Italian submarine "Console Generale Liuzzi" off Crete with the British destroyers , , , and , forcing the Italians to surrender and scuttle their vessel. Two days later, the Allied ships encountered the Italian submarine "Uebi Scebeli" and sank her after capturing the crew. On 9 July, "Voyager" was involved in the Battle of Calabria, as escort to the carrier . A day later, she was assigned to escort a convoy from Malta to Alexandria.