The counterfactual moves the final Neptune design to 1937 and has the Royal Navy build it immediately. Earlier access to its 4.5-inch dual-purpose guns might then have shifted destroyers away from 4.7-inch weapons by 1939 or 1940. Fast-firing 6-inch turrets, radar, 33-knot speed, and long range would have made the class a formidable wartime package. This thought experiment shows how the timing of technology adoption can shape a fleet; it does not claim that Neptune was historically available before the war.
Notable Point · 28:06-29:36
What a 1937 Neptune could have changed
Moving Neptune back to 1937 creates a technology counterfactual: its dual-purpose 4.5-inch guns, fast-firing 6-inch turrets, radar, speed, and range could have influenced the wartime fleet.