Railguns trade desired firepower against power and ammunition supply

Would a future railgun-armed escort carry several turrets like an older cruiser, or one very large gun?

At least two turrets, ideally twins, would be preferable if power generation, ammunition supply, and the technology itself make that layout viable.

A future Type 83-style ship would preferably carry at least two railgun turrets, ideally twin mounts, if mature systems are available. Electrical generation and rapid ammunition supply are the central obstacles; nuclear propulsion could supply the power, though it would be an unattractive solution for an escort. A Bofors-like firing rate may be possible only if power and replenishment both keep pace. The final layout therefore depends on technology and the ship's energy and ammunition systems.