Pennsylvania-class battleship

Pennsylvania-class battleship. The Pennsylvania-class battleships were a pair of dreadnought battleships built for the United States Navy in the 1910s. The class, consisting of USS ''Pennsylvania'' and USS ''Arizona'', represented a significant evolution in American battleship design, introducing a new main battery arrangement and improved armor protection. They served through both World War I and World War II, with one vessel becoming a central symbol of American loss during the attack on Pearl Harbor.

Design and description

The design of the Pennsylvania-class was a direct development from the preceding Nevada-class battleship, adhering to the "all or nothing" armor principle championed by the General Board of the United States Navy. Their primary advancement was the adoption of a four-turret, twelve-gun main battery of 14-inch/45-caliber guns, increasing firepower over the Nevadas. This layout, with two superfiring turrets fore and aft, became standard for subsequent American Standard-type battleship designs like the New Mexico-class battleship. Propulsion was provided by steam turbines driving four propellers, with a design speed of 21 knots. The class's armor scheme focused on protecting vital areas with a thick belt armor and multiple armored decks, while largely leaving non-essential spaces unarmored.

Construction and service history

Both ships were authorized by the United States Congress in 1913. USS Pennsylvania (BB-38) was constructed at the Newport News Shipbuilding yard in Virginia, while USS Arizona (BB-39) was built at the New York Navy Yard in Brooklyn. They were commissioned in 1916, shortly before the United States entered World War I. During that conflict, Pennsylvania served as the flagship of the Atlantic Fleet but saw no combat, while Arizona was based primarily on the East Coast of the United States. Between the wars, both battleships underwent significant modernization, receiving upgrades like new oil-fired boilers, anti-torpedo bulges, enhanced anti-aircraft batteries, and modern fire-control systems at shipyards such as Norfolk Naval Shipyard and Puget Sound Naval Shipyard.

Ships in class

{| class="wikitable" |- ! Name ! Hull number ! Builder ! Laid down ! Launched ! Commissioned ! Fate |- | USS Pennsylvania (BB-38) | BB-38 | Newport News Shipbuilding | 27 October 1913 | 16 March 1915 | 12 June 1916 | Sunk as target after Operation Crossroads, 1946 |- | USS Arizona (BB-39) | BB-39 | New York Navy Yard | 16 March 1914 | 19 June 1915 | 17 October 1916 | Sunk during the attack on Pearl Harbor, 7 December 1941 |}

Operational history

The operational careers of the two ships diverged dramatically during World War II. USS Arizona (BB-39) was destroyed during the opening minutes of the attack on Pearl Harbor on 7 December 1941; a bomb detonated her forward magazine, causing a catastrophic explosion that killed 1,177 officers and crewmen. The wreck remains a war grave and the site of the USS Arizona Memorial. USS Pennsylvania (BB-38), which was in dry dock at Pearl Harbor during the attack, sustained only minor damage. It was quickly repaired and served extensively in the Pacific Theater of Operations, providing naval gunfire support during numerous campaigns including the Aleutian Islands Campaign, the Battle of Tarawa, the Battle of the Philippine Sea, the Battle of Leyte Gulf, and the Battle of Okinawa. It was damaged by a aerial torpedo at Okinawa and was later used as a target ship during Operation Crossroads at Bikini Atoll.

Legacy and significance

The Pennsylvania-class holds a profound place in American naval history. The loss of USS Arizona (BB-39) at Pearl Harbor transformed the ship into a national symbol of sacrifice, and the memorial spanning its hull is one of the most visited historic sites in Hawaii. The class itself marked the culmination of early American dreadnought design, solidifying the main battery layout and protection philosophy that defined the Standard-type battleship. While technologically surpassed by newer fast battleships like the North Carolina-class battleship by World War II, Pennsylvania demonstrated the enduring value of heavily armed battleships in providing devastating shore bombardment. The class's story bridges the era of World War I naval expansion and the climactic naval battles of the Pacific War.

Category:Battleship classes Category:Battleships of the United States Category:World War I battleships of the United States Category:World War II battleships of the United States