Treaty limitations helped shape differences among American, British, and Japanese destroyer designs. The concluding design problem gives every navy its preferred gun in a fully dual-purpose mounting, with elevation up to 85 degrees. Powered assistance allows loading and firing at any angle, matching the support offered by the American 5-inch/38 system. The question remains open: how would World War II change if every navy had that standard of gun installation?
Notable Point · 1:48:44-1:50:32
The decisive advantage was the whole gun system
The closing counterfactual asks how World War II changes if every navy pairs its preferred gun with powered loading, high elevation, and integrated support comparable to the 5-inch/38 system.