TomS said:The fuel requirement isn't that terrible -- I recall a figure of 8 gallons per shot a few years ago. Compared to the usual consumption of the ship's engines, that's not much. Radar has a much worse impact because it's consumption is continuous -- railguns are pulsed and the extra power to charge the pulse power generators is required only for short periods.
At the previous stated 10 rounds a minute ROF that equates to 80 gallons per minute's firing. That will quickly add up to a substantial quantity of fuel.