A common 4.5-inch battery across the fleet

How widely could a successful triple 4.5-inch turret have been adopted?

It could become the common battery on many British warships, leaving Dido-class cruisers as the principal 5.25-inch specialists.

The design discussion extends the imagined triple 4.5-inch turret beyond Tribal destroyers. The same mounting could equip carriers, battleships, older C- and D-class cruisers, and destroyers, simplifying a large part of the fleet’s medium-gun battery. Dido-class cruisers would retain their 5.25-inch weapons as specialist anti-aircraft ships because that mounting offered different advantages. The result is a two-tier scheme in which most ships share a common dual-purpose gun while a smaller cruiser group preserves the heavier specialist system. A later exchange adds the logistical payoff by listing the overlapping 4-inch, 4.5-inch, 4.7-inch, and 5.25-inch weapons the historical fleet already had to support.