Battleships of The United States - Mid To Late 1900s

Mid To Late 1900s

After the 1930s "builders holiday," the USN commissioned ten more battleships of an entirely new style, the so-called fast battleship. These ships began with BB-55 North Carolina and the last ship laid down was BB-66 Kentucky (the last ship completed was BB-64 Wisconsin). These ships were a nearly clean break from previous American design practices. All ten ships were built to a Panamax design (technically post-Panamax, as they exceeded normal Panamax beam by two feet, but they were still able to transit the canal). They were fast battleships, and could travel with the aircraft carriers at cruising speed (their speed was not intended for that role, but rather so they could run down and destroy enemy battlecruisers). They possessed almost completely homogenous main armament (nine 16" guns in each ship, the sole difference being an increase in length from 45 to 50 calibers with the Iowa class vessels), very high speed relative to other American designs (28 knots in the North Carolina and South Dakota classes, 33 in the Iowa class), and moderate armor. The North Carolinas were of particular concern, as their protection was rated as only "adequate" against the 16" superheavy weapon. They had been designed with, and armored against, a battery of three quadruple 14" guns, then changed to triple 16" guns after the escalator clause in the Second London Naval Treaty had been triggered. Secondary in these ships was almost homogenous as well: Except for South Dakota, configured as a flagship, the other nine ships of this group sported a uniform 20-gun 5" secondary battery (South Dakota deleted two 5" mounts to make room for flag facilities). Visually, the World War II ships are distinguished by their triple-turret arrangement and the massive columnar mast that dominates their superstructure. The last ship, Wisconsin (BB-64), commissioned in 1944 (Wisconsin was approved last; however, Missouri commissioned 3 months later, due to delays from additional aircraft carrier construction). Missouri (BB-63), famous for being the ship on which the Japanese instrument of surrender was signed, was the last battleship in the world to decommission on 31 March 1992. Seven of these ten ships are still in existence as of 2006. South Dakota, Washington and Indiana were scrapped, but the remainder are either now museum ships or (Iowa) being refurbished to become museum ships. There was intended to be another class of five of these ships, the Montana class (BB-67 Montana through BB-71 Louisiana), but they were canceled before being laid down in favor of a greater number of aircraft carriers. The Montana class ships would have been built to a 60,000-ton post-Panamax design, and carried a greater number of guns (12x 16") and heavier armor than the other ships; otherwise they would have been homogenous with the rest of the World War II battleships.

In October 2006, the last battleships, (USS Iowa and USS Wisconsin), were stricken from the Naval Registry.