Over the course of the refit, the mine damage was repaired, her displacement was increased to , and the hull was slightly reworked. She was reduced in length by a half meter but her beam increased by . "Yavuz" was equipped with new boilers and a French fire control system for her main battery guns. Two of the 15 cm guns were removed from their casemate positions. Her armor protection was not upgraded to take the lessons of the Battle of Jutland into account, and she had only of armor above her magazines. "Yavuz" was recommissioned in 1930, resuming her role as flagship of the Turkish Navy, and performed better than expected in her speed trials; her subsequent gunnery and fire control trials were also successful. The four destroyers, which were needed to protect the battlecruiser, entered service between 1931 and 1932; their performance never met the design specifications. In response to "Yavuz"s return to service, the Soviet Union transferred the battleship and light cruiser from the Baltic in late 1929 to ensure that the Black Sea Fleet retained parity with the Turkish Navy. The Greek Government also responded by ordering two destroyers.