When shore power could operate a warship's guns

How many navies could operate their main batteries from shore power late in the Second World War?

There is no clean navy-wide count; capability varied by ship class, gun mounting, and the degree to which its machinery was electrified.

Main batteries used different combinations of electric, hydraulic, and manually operated machinery. Some therefore did not need electrical power for the operations being discussed. Within one navy, a destroyer or cruiser class could differ from most of its fleet, so a national total would hide the relevant distinctions. Establishing which ships could use shore power requires examining their individual mounting and machinery arrangements; the exchange does not supply that list.