Gun arcs and the torpedo-boat destroyer problem

Weapon totals alone do not show how many guns a ship can bring to bear. Centerline mounting helped stability, but the layout lacked the overlapping firing arcs and concentrated fire needed for aggressive skirmishing or breaking through a position. A ship that had to turn broadside to use its full battery presented a larger target and exposed its machinery spaces more readily. This geometry kept the ships closer to the torpedo-boat-destroyer tradition than to destroyers optimized for peer combat. The ships could still score successes, but skilled crews could not erase the disadvantage built into their firing arcs. Sixteen Sella, Sauro, and Turbine ships added two flotillas, yet their numbers fell well short of the thirty-two Spica torpedo boats used as a comparison. The criticism is that Italy accepted an individual firepower disadvantage without building enough ships to compensate through numbers.