 After trials, testing, and working-up at Tobermory she sailed for Malta in November 1945, to carry out patrol duties in western Mediterranean, with visits to Gibraltar and Catania.She also deployed as guardship at Trieste, and carried out patrols in eastern Mediterranean to intercept ships taking illegal Jewish immigrants to Palestine in mid-1946.In September 1946 she joined the newly formed 5th Frigate Flotilla based in Malta, and continued her patrols in the Eastern Mediterranean.