To counter this, it was determined a top speed of between was possible if the power plant from "North Carolina" could be reduced in size enough to fit in the tighter hull of "South Dakota". In order to do so the boilers were positioned directly above the turbines in the same arrangement to have been used in the 1916 s. The boilers were then rearranged several times so they were staggered with the turbines, eventually ending directly alongside the turbines. The propulsion system was arranged as close together as possible, and the evaporators and distilling equipment were placed in the machinery rooms. This provided enough additional space behind the armored belt to add a second plotting room.