What turret damage can be repaired during battle

Which battleship-turret failures are fixable during combat, and which require a dockyard?

Minor hydraulic and electrical faults may be bypassed, but a turret displaced from its ring or suffering major drive damage is operationally irreparable at sea.

A turret displaced from its ring or roller path cannot train properly, and the crew cannot restore that alignment during action. Dockyard reconstruction allows repairs that are impossible while the ship is under fire. A blown hydraulic hose or electrical fuse may be repairable, but the pumps and motors needed to turn a multi-thousand-ton turret are too large to replace in those conditions. Multiple drives and auxiliary systems give the crew ways to keep operating when a single component fails.