What if Britain kept a low-rate 16-inch gun line active for coastal batteries before World War II?
Short answerThe King George V class could receive reliable triple 16-inch turrets, while British coastal defenses gain more heavy guns and useful ammunition.
NotesA low-rate production line would preserve the people, tooling, and opportunities needed to improve the Royal Navy's 16-inch weapon. When the King George V design was fixed, a mature gun could replace the treaty-driven 14-inch battery in three triple turrets. That avoids some of the mechanical complexity of the historical quadruple mounts. Continued shell production could also place 16-inch coastal batteries and high-explosive ammunition at Gibraltar, Singapore, and British home defenses. Industrial continuity would improve fleet armament and shore readiness.