 Complete the following phrase:  On 3 September, Duchess left Portsmouth to join the Mediterranean Fleet as leader of the 5th Destroyer Squadron. Workups were conducted at Silema Creek during September, followed by port visits to Tripoli and Civitavecchia in October, then self-maintece and day sails from Malta for the rest of the year. 1958 commenced with a seven-week Cyprus patrol. By the end of the patrol on 21 February, the destroyer had developed a leak in her hull, but was able to reach Malta without difficulty. March consisted of participation in Exercise Marjex, followed by port visits to Taranto and Ancona, joint exercises with the Italian Navy, and a visit to Venice before returning to Malta. Major fleet exercises occurred in April and early May. Duchess was due to return to the United Kingdom in May, but unrest in Lebanon which would escalate into the 