Doctrine
The Standard type, by specifying common tactical operational characteristics between classes, allowed battleships of different classes to operate together as a tactical unit ( BatDiv) against enemy battleships. By contrast, other navies had fast and slow battleship classes that could not operate together unless limited to the performance of the ship with slowest speed and widest turning circle. Otherwise the battle line would be split into separate "fast" and "slow" wings. The Standard type was optimized for the battleship-centric naval strategy of the era of their design. The next US battleship classes, beginning with the designed in the late 1930s and commissioned in 1941, marked a departure from the Standard type, introducing the fast battleships needed to escort the aircraft carriers that came to dominate naval strategy.List of Standard-type battleships
Characteristics
Characteristics of the Standard type included: * all-or-nothing armor scheme * All main guns on the centerline in fore and aft turrets with no amidships guns * designed range of about at economical cruising speed * top speed of * tactical turn radius of 700 yards The , the first US battleships to mount guns, represented the endpoint of the gradual evolution of the "Standard Type" battleships. The ''Colorado''-class battleships were long, displaced 32,600 tons, had a top speed of , and carried a main battery of eight guns. The next planned class of Standard battleships, the never-completed s, represented a significant increase in size and armament over the ''Colorado''s. They would have been long, displaced 43,200 tons, had a top speed of , and carried 12 guns. Nonetheless, the design characteristics of the ''South Dakota''s closely followed the standard-type battleship, albeit at a greater scale. Like the ''Tennessee''s and ''Colorado''s, they were designed with the same bridges, lattice masts and turbo-electric propulsion system and they used the same torpedo protection system as the latter class. Naval historian Norman Friedman described the ''South Dakota''s as the ultimate development of the series of U.S. battleships that began with the , despite the increase in size, speed and intermediate armament from the standard type that characterized the ''Nevada'' through ''Colorado'' classes.Service history
World War I
All the Standard Type were oil-burning. Since oil was scarce in the British Isles, only ''Nevada'' and ''Oklahoma'' actively participated in World War I by escorting convoys across the Atlantic Ocean between the United States and Britain.Interwar years
All the Standard Types were modernized during the 1920s and 1930s. The cage masts of all but the ''Tennessee'' and ''Colorado'' classes were replaced with tripod masts topped with fire-control directors, torpedo tubes were removed and anti-aircraft guns were upgraded. Main battery elevation in the older ships was increased to 30 degrees for greater range. Most of the Standards received anti-torpedo bulges. Each ship received one or two catapults and recovery cranes for operating floatplanes for scouting and gunnery spotting.World War II
On 7 December 1941, ''Colorado'' was undergoing a refit to install new torpedo bulges at Puget Sound Navy Yard, while the three ships of the ''New Mexico'' class were assigned to the Atlantic Fleet. The remaining eight Standard Type battleships were at Pearl Harbor, ''Pennsylvania'' in drydock at the Pearl Harbor Naval Shipyard and the other 7 forming Battleship Row. During the Pearl Harbor attack, ''Arizona''s forward magazine exploded from a bomb hit and ''Oklahoma'' capsized after multiple torpedo strikes, both with significant losses of life. ''West Virginia'' and ''California'' were also sunk, while ''Nevada'' managed to get underway and was beached shortly afterward. ''Tennessee'' and ''Maryland'' each received two bomb hits. ''Arizona'' and ''Oklahoma'' were considered permanent losses, but the other damaged and sunk battleships were salvaged and sent to the West Coast for repairs and reconstruction. ''Nevada'' and ''Pennsylvania'' received entirely new superstructures with revised secondary armaments of 5"/38 DP guns in twin mounts, as well as numerous new 20 mm and 40 mm AA guns. ''Tennessee'', ''California'' and ''West Virginia'' were even more thoroughly rebuilt, incorporating not just changes similar to ''Nevada'' but increased deck armour, torpedo bulges and improved subdivision and a modern radar and electronics suite, though their widened beam exceeded the Panama Canal restrictions which limited their operations to the Pacific. ''Maryland'', ''Colorado'', and the three ''New Mexico''-class ships were too urgently needed in 1942 to undergo similar rebuilds. Most changes to these ships focused on updating their radar suites and expanding their light AA armaments, though ''Idaho'' would receive an updated secondary battery of 5in/38 guns in late 1944 and ''Maryland'' received a partial rebuild that was completed in August 1945 just as Japan surrendered. The ten surviving Standard Type battleships served throughout World War II primarily as fire support for amphibious landings. Their low speed relegated them to second line duties as they were too slow to accompany the fleet carriers that had become the dominant combatant. Six of them participated in the last battleship versus battleship engagement in naval history, the Battle of Surigao Strait, where none of them were hit.Fates
''Arizona'' and ''Oklahoma'' were sunk during the attack on Pearl Harbor on 7 December 1941. Their sister ships ''Pennsylvania'' and ''Nevada'' were used as targets in the Operation Crossroads atomic tests in 1946; ''Pennsylvania'' was not fully repaired after being severely damaged by an air-launched torpedo in the closing days of the Pacific War. In 1946 ''Mississippi'' was converted to a test vessel for new gun and missile systems and served until 1956. Most other Standard-type battleships were decommissioned in 1946 or 1947 and placed in the reserve fleet; ultimately all were scrapped by 1961.Footnotes
Notes
Citations
Sources
* * *Further reading
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