After about a month of 6th Fleet operations and port visits, "Biddle" transited the Straits of the Bosporus and the Dardanelles and entered the Black Sea once again. On 22 November, she entered port at Constanta, Romania, to begin what was characterized as a highly successful goodwill visit. The guided-missile cruiser departed Constanta on 27 November and completed her retransit of the Straits on the 28 November. She resumed normal 6th Fleet operations, conducting multiship drills and exercises and making goodwill visits to ports in the Mediterranean. That employment carried her into March 1979. She completed turnover procedures between 23 and 25 March and then began the voyage home. The warship arrived in Norfolk on 5 April and spent the rest of the month in post-deployment standdown.