Both ships underwent extensive refits near the end or after the war. "North Carolina" received a secondary air search set (SR) and a SCR-720 zenith search radar on the forward funnel. At the end of the war, it had an SP surface-search, a SK-2 air-search, a Mark 38 main battery fire control system with Mark 13 and 27 radars, a Mark 37 secondary battery fire control system with Mark 12, 22 and 32 radars, and a Mark 57 smaller weaponry fire control system, with a Mark 34 radar. In March 1946, "Washington" had a SK fore and a SR aft, a SG both fore and aft, and a TDY jammer (which could scramble radar on other ships).