Firing delays, turret access and maintenance

Would non-synchronous firing from a turret affect accuracy?

Firing within about a second of each other has only a small effect on accuracy. The effect of a larger delay would depend on how far apart the shots were.

The effect of non-synchronous firing depends on the length of the delay. Guns firing within about a second of each other are judged to suffer only a small accuracy effect. A quadruple mounting creates a different problem by crowding more components into a footprint that could accommodate a triple turret. Leaving room around the mechanisms makes inspection and preventive maintenance easier, so minor faults can be found before they become serious. A larger hull costs more to construct, but its extra access space can reduce costs over the ship's life.