Why an Alsace-class battleship would not begin with a 1948 gun

Would an Alsace-class battleship likely complete with 127 mm Model 1948 and 57 mm guns?

No; an uninterrupted Alsace program should complete before the Model 1948 weapon exists, though a later refit could add newer guns.

The hypothetical asks whether an Alsace-class battleship would carry 127 mm Model 1948 and 57 mm weapons. The class was planned in the late 1930s to follow the Richelieu program, whose later ships were expected around 1942 to 1944. An Alsace that proceeds without wartime interruption should therefore be completed before a weapon first identified with 1948 can be fitted during construction. The panel allows that the ship could receive a 1946- or 1947-generation gun or later be modernized, as Jean Bart was. Naming a later weapon in the original fit confuses completion timing with postwar refit possibilities.