USS Colorado (BB-45) was an American battleship laid down in 1919, launched in March 1921, and commissioned in the US Navy in August 1923. The length of the ship was 190.3 m, width 29.7 m, and displacement - at the time of launching - 32,600 tons. The maximum speed of the vessel reached 21 knots. The main armament was 8 406 mm guns in four turrets, two guns each, and the secondary armament was mainly 12 127 mm guns.
USS Colorado (BB-45) was the first of four battleships belonging to the class of the same name - the Colorado. Units of this type belonged to the so-called standard battleships, i.e. ships with similar combat values, dimensions and capabilities, although divided into different classes, which entered service with the US Navy in the period 1916-1923. The Colorado-class battleships, compared to their predecessors, had primarily completely changed main weapons and were the first in the history of the American Navy to use artillery of 406 mm caliber. Projected them as a balance for the Japanese Nagato-class battleships. In general, however, in terms of construction, armor and maximum speed, the Colorado-class battleships were similar to the Tennessee-class battleships. USS Colorado (BB-45) was in a repair shipyard at the outbreak of the Pacific War and only returned to the line in mid-1942. From November of that year to September 1943, the battleship operated in the area of the island of Fiji and the New Hebrides. At the beginning of 1944, the unit supported landing operations in the Marshall Islands with its fire. In the summer of the same year, he again supported amphibious operations - this time on the islands of Guam, Saipan and Tinian. At the end of 1944, despite minor damage, he supported the actions of American troops in the Philippines. USS Colorado (BB-45) also took part in operations in Okinawa in 1945. The battleship was put into reserve in January 1947 and was sold for scrap in 1959.