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The USS Missouri (BB-63) is a United States Navy battleship, notable as both the last battleship to be built by the United StatesThe United States of America also referred to as the United States U. America ¹ or the States is a federal republic in central North America, stretching from the Atlantic in the east to the Pacific Ocean in the west. It shares land borders with Canada in, and as the site of the JapanJapan (, Nippon/Nihon literally "the origin of the sun") is a country in East Asia situated on a chain of islands east of the Asian continent on the western edge of the Pacific Ocean. The largest of these islands are, from north to south, Hokkaido , Honshese surrender at the end of World War IIWorld War II was the most extensive and costly armed conflict in the history of the world, involving the great majority of the world's nations, being fought simultaneously in several major theatres, and costing tens of millions of lives. The war was fough. She is presently a museum shipA museum ship or sometimes memorial ship is an old ship that has been preserved and converted into a museum open to the public. There are several hundred of these around the world, often associated with maritime museums. Despite the long history of sea tr at Pearl HarborPearl Harbor is a complex embayment on the island of O'ahu, Hawai'i, west of Honolulu. Much of the harbor and surrounding lands is a US Navy deep water naval base: headquarters of the US Pacific Fleet. The attack on Pearl Harbor by Japan on 7 December 194.

She was one of the Iowa classFour battleships of the Iowa-class battleships (BB-61 through BB-64) were built in the early 1940s in the United States. Two other Iowa class ships, Illinois and Kentucky were scrapped prior to completion. The Iowa class were constructed at two Navy Yards "fast battleship" designs planned in 1938 by the Preliminary Design Branch at the Bureau of Construction and Repair. The Missouri was ordered in June, 1940 and the keel was laid at the New York Navy Yard in Brooklyn, New York on January 6, 1941. She was launched on January 29, 1944 and commissioned on June 11 as BB63. The ship was the fourth and last of the Iowa class as well as the final battleship to be commissioned by the Navy.

The "Mighty Mo" was dispatched to Pearl Harbor from Norfolk, Virginia in November, 1944 under the command of William M. Callaghan and first saw combat operations in January, 1945 as part of the protective force for the aircraft carrier Lexington. The battleship was then involved in operations around Iwo Jima and the Ryukyus from mid-February before being assigned to the Yorktown fast carrier group in March, operating in the Inland Sea. In late March the battleship was assigned to the operations around Okinawa. On April 11 the Missouri was struck by a Zero kamikaze aircraft but suffered little damage. On May 5 the Missouri was dispatched to Guam via Ulithi to pick up Admiral William Halsey, Jr. before returning to Okinawa by May 27. The fleet finally retired from Okinawa in June, arriving at Leyte on June 13. On July 13 the Missouri was part of the fleet that attacked Honshu and Hokkaido, shells from the Missouri aiding in the destruction of the Nihon works at Muroran and on targets around Hitachi. The battleship was involved in strikes on northern Honshu when the atomic bomb was dropped on Nagasaki. The Missouri entered Tokyo Bay on August 29.

The final surrender of Japan was accepted aboard the Missouri on the morning of September 2, 1945 by General Douglas MacArthur and Admiral Chester Nimitz from a delegation led by Mamoru Shigemitsu. The Missouri returned to Pearl Harbor on September 20.

During training on January 17, 1950 the vessel ran aground on the Thimble Shoals and was not refloated until February 1. The Missouri was deployed during the Korean War in September, 1950 and conducted shore bombardment around Samchok on September 15 before becoming part of the escort for the Valley Forge and conducting further bombardments in October ( Chonjin and Tanchon ) and December ( Hungnam ). The Missouri conducted further operations in the area until March, 1951 when she returned to Norfolk and was assigned to the Atlantic fleet. She returned to Korea in October, 1952 to conduct a series of shore bombardment operations as flagship of the 7th Fleet. Her operations around Korea continued until March 25, 1953 with the bombardment near Kojo . She returned to the Atlantic fleet in mid May. She was decommissioned and moved to the Bremerton group of the Pacific Reserve Fleet on February 26, 1955 following a final series of visits to Portugal, Spain and Guantanamo Bay.

She was reactivated and modernized from May 1985 and recommissioned on May 10, 1986. The ship was sent on an around-the-world shakedown cruise, becoming the first battleship to circumnavigate the globe since Theodore Roosevelt's "Great White Fleet" of 1907-09. In her second active-duty stint, the Missouri spent much time in and around the Persian Gulf. In 1987, the ship was equipped with additional smaller caliber weapons to deal with speedboat threats, and sent to take part in Operation Earnest Will, the escorting of reflagged tankers from Kuwait. She was deployed during the Gulf War from January 1991 for shore bombardment and 28 Tomahawk missile attacks.

The Missouri was finally decommissioned on March 31, 1992 and returned to Bremerton, Washington. She was removed from the Naval Register on January 12, 1995. The vessel was donated to the Missouri Memorial Association in 1996 and subsequently transferred to Hawai‘i in 1998, where she officially joined the Battleship Row memorial in Pearl Harbor on January 29, 1999.