A nominal range of 3,600 nautical miles permits an outward journey of 1,800 nautical miles only if enough fuel remains for the return. Fighting at around 30 to 39 knots consumes fuel much faster than economical cruising. Allowing for combat produces a rough attack radius of 1,000 to 1,200 nautical miles. Shanghai's stated distance of about 1,100 nautical miles from Yokosuka shows how quickly that allowance is used by regional operations.
Notable Point · 13:24-15:18
A rated range is not a combat radius
A 3,600-nautical-mile cruising figure shrinks once the ship must return home and spend fuel attacking at high speed.