The ship departed Scapa Flow to have her turbines repaired at Portsmouth on 18 January 1915 and rejoined her squadron on 11 March. During this time, Captain Edmond Hyde Parker relieved Bentinck. On 7–10 March, the Grand Fleet made a sweep in the northern North Sea, during which it conducted training manoeuvres. Another such cruise took place on 16–19 March. On 11 April, the fleet patrolled the central North Sea and returned to port on 14 April; another patrol in the area took place on 17–19 April, followed by gunnery drills off Shetland on 20–21 April. It made further sweeps into the central North Sea on 17–19 May and 29–31 May without encountering any German vessels. "Superb" had to be escorted from Devonport on 16 June after the completion of her refit. The Grand Fleet conducted training off Shetland beginning on 11 July. On 2–5 September, the fleet went on another cruise in the northern end of the North Sea and conducted gunnery drills. Throughout the rest of the month, the fleet was performing numerous training exercises before making another sweep into the North Sea on 13–15 October. Almost three weeks later, "Superb" participated in another fleet training operation west of Orkney during 2–5 November. Five days later, the ship was transferred to the 4th Battle Squadron.