 After sea trials, on 18 August 1945 "Cardigan Bay" joined the Mediterranean Fleet at Malta under the command of Commander Colin Maud.She was deployed in the Aegean Sea and at Haifa to intercept immigrant ships bound for Palestine.In July 1947 she escorted SS "President Warfield" (renamed "Exodus 1947") to Famagusta, Cyprus, after placing a boarding party aboard, and in August escorted the British merchant ships "Ocean Vigour", "Empire Rival" and "Runnymede Park" to Port-de-Bouc near Marseille, taking the immigrants from "Exodus" back to France.