USS Connecticut (BB-18), the fourth United States Navy ship to be named after the state of Connecticut, was the lead ship of her class of six. Her keel was laid on 10 March 1903; launched on 29 September 1904, Connecticut was commissioned on 29 September 1906 as the most advanced ship in the U.S. Navy.
Connecticut served as the flagship for the Jamestown Exposition in mid-1907, which commemorated the 300th anniversary of the founding of the Jamestown colony. She later sailed with the Great White Fleet on a circumnavigation of the Earth to showcase the US Navy's growing fleet of blue-water-capable ships. After completing her service with the Great White Fleet, Connecticut participated in several flag-waving exercises intended to protect American citizens abroad until she was pressed into service as a troop transport at the end of World War I to expedite the return of American Expeditionary Forces from France.
For the remainder of her career, Connecticut sailed to various places in both the Atlantic and Pacific while training newer recruits to the Navy. However, the provisions of the 1922 Washington Naval Treaty stipulated that many of the older battleships, Connecticut among them, would have to be disposed of, so she was decommissioned on 1 March 1922 and sold for scrap on 1 November 1923.