Continuing Royal Navy development of the 3-inch/70

Which ships might have received a developed 3-inch/70 gun, and how useful could it have been in the Falklands?

A mature 3-inch/70 could equip many ships, retain a role for a six-inch main gun and strengthen close air defence at San Carlos.

Continued development is compared with the broad adoption of the OTO 76 mm family. In that counterfactual, a smaller rapid-firing weapon changes the case for a 4.5-inch main gun and could leave room for a six-inch alternative. The Falklands benefit depends on the 3-inch/70 having become fully reliable. San Carlos's terrain and recurring aircraft approaches are used to argue for concentrated defensive gunfire. The expected effect is conditional, not a claim about how the historical weapon actually performed there.