If I recall correctly, the reason the S. Dakota had a longer repair time was due to her receiving one of the first refits with the 40mm Bofors quads and alot more 20mm. The Bofors as opposed to the 1.1" required more on-mount power and a seperate director station along with adding clipping rooms and magazines as well as splinter armor. This gave her alot more firepower at Santa Cruz a couple of months later.