Later calculations proved that the "North Carolina"s could be lightened from 44,377 long tons to around , at which 210,000 shp would suffice. At the trial displacement figure of , even would be enough; the 210,000 figure was derived from a 12.5% overestimation to account for a fouled bottom or bad weather. A similar power plant to the one used in the "Iowa" class (generating ) would be enough, and if the third turret was removed there would be no problems with weight, but there was not enough space within the "North Carolina"s. When compared, the current power plant measured , but "Iowa"s was . Lastly, there would be an issue with the propellers; the "Iowa" class' were wide, while the "North Carolina"s were . In the end, no conversions were undertaken.