Concentrating a Japanese super-battleship battery amidships

The requested Japanese super-battleship concentrates its main guns amidships, with towers at either end. The arrangement produces a compact armored citadel, but wing turrets add roll despite their extra firepower. Low roll remains a design preference because the guns need a steady platform. In battle this layout also prevents the usual approach and requires a different angle of attack. The disappointing result is consistent with the earlier concerns about balance.