A few photos of
USS Idaho BB-42, a
New Mexico class Standard battleship. Like most of the older battleships, she was rebuilt with a much heavier AA armament. The 1942 refit included 10 quadruple 40 mm Bofors + 43 20mm Oerkilons. Uniquely, she was refitted with 10 (not 20) 5”/38 dual purpose cannons using the single gun turret from the
Fletcher class destroyers, not the twin turret from the
Sumner class.
Idaho's (BB-42) forward main turret is trained to starboard during battle exercises when she entered Puget Sound Navy Yard to be re-gunned. Upon completion of this work
Idaho again took part in battle exercises, and sailed 7 April 1943 for operations in the bleak Aleutians.

Next on the Pacific timetable was the invasion of the Marshalls, and the veteran battleship arrived off Kwajalein early 31 January 1944 to soften up shore positions. Again she hurled tons of shells into Japanese positions until 5 February, when the outcome was one of certain victory.
Close up views of port side showing the 5"/38 caliber single enclosed mounts added to the
Idaho (BB-42) at Puget Sound Naval Shipyard in late 1944
January 1945 in Puget Sound after her last major overhaul at Bremerton Navy Yard that began 22 October 1944.
In addition to the ten 5/38 single enclosed secondary battery
Idaho (BB-42) also had upgrades to fire control equipment. This included Mk 8 Mod 2 main battery fire control radar mounted in front of her forward Mk 31 main battery director. She still retained her aft Mk 3 main battery fire control radar mounted on the aft Mk 31 director. A Mk 27 main battery director was mounted on the Conning Tower.
For secondary battery control
Idaho had MK 28 radars installed on her two Mk 33 directors. She also had fourteen MK 51 directors for her 40mm guns.

Bombarding Iwo Jima, circa late February 1945.

Sitting among circling landing craft, the
Idaho (BB-42) takes up her assigned bombardment station, off Okinawa as the invasion begins. The
Idaho was flagship of Bombardment Unit 4 and had been hitting Japanese shore batteries and installations for almost a month before this 1 April 1945 photo.
Idaho (BB-42) &
West Virginia (BB-48) provide fire support during the invasion of Okinawa.