The size penalty of an all-triple Pensacola battery

What would a Pensacola-class cruiser with only triple turrets look like?

Three triples would mean fewer guns, while four triples would require a substantially larger and more powerful hull.

Three triple turrets would reduce the ship to nine guns. Retaining ten or more guns with an all-triple arrangement would require at least four turrets. Accommodating those mountings while preserving workable firing arcs would make the cruiser longer, beamier, or both. The thought experiment shows how a seemingly simple turret standardization can propagate through displacement, hull form, and overall combat power.