To keep design delays to a minimum, internal compartments were kept as similar to "Richelieu" as possible; existing magazines for the 152 mm guns were modified to store ammunition for the 100 mm and 37 mm guns. Standard displacement was kept at 35,000 tons to comply with the Washington Treaty limits, but full load displacement increased slightly to owing to the additional anti-aircraft guns. The ship was in most respects identical to her half-sisters, with the same dimensions and propulsion system, main battery, and armor layout. The increases to her anti-aircraft armament brought her crew up to a total of 1,670 officers and men.