World War I
On the day of America's entry into World War I on 6 April 1917, Charleston was placed in full commission, and early in May reported for duty with the Patrol Force in the Caribbean. Based on St. Thomas, U.S. Virgin Islands, she patrolled for commerce raiders through the month of May, then sailed north carrying Marines from Haiti to Philadelphia.
Here she readied to join the escort of the convoy carrying the first troops of the American Expeditionary Force to France, which cleared New York on 14 June, made St. Nazaire, France, after a safe passage through submarine waters on 28 June, and returned to New York on 19 July. After training naval volunteers and reserves for two weeks at Newport, Charleston cleared on 16 August for Havana, Cuba, where she supervised the sailing in tow of several former German ships to New Orleans. She next escorted a convoy from Cristobal to Bermuda, where she rendezvoused with a group of British transports, guarding their passage to Hampton Roads.
In September–October 1918, she made two convoy escort voyages to Nova Scotia, then joined the Cruiser and Transport Force, with which she made five voyages to France carrying occupation troops overseas and returning with combat veterans.
Decommissioning and fate
Charleston sailed from Philadelphia for the west coast on 23 July 1919, reaching Bremerton on 24 August. Here she was placed in reduced commission until late in 1920, when she arrived in San Diego to serve as administrative flagship for Commander, Destroyer Squadrons, Pacific Fleet. She served on this duty until 4 June 1923, when she sailed for Puget Sound Navy Yard and decommissioning on 4 December 1923. She was sold on 6 March 1930.
Charleston was stripped down to the waterline and then sold to the Powell River Company, Ltd. On 25 October 1930, the ship was towed to Powell River, British Columbia, Canada, to serve as a floating breakwater for a large logging mill. The hulk was ballasted, anchored and periodically pumped out to keep her afloat. The following year, she was joined by the hull of the cruiser Huron (formerly South Dakota). In 1961, heavy weather caused Charleston to partially flood, and her hull was towed to Kelsey Bay, on the north coast of Vancouver Island. The hulk was run ashore to serve as a breakwater, where she can be seen to this day.
Silver service
On 1 January 1905, the city of Charleston, South Carolina gave a silver punch service to the ship. The service included a silver bowl with an 18-inch (460 mm) diameter that weighed nearly 19 pounds (8.6 kg). The set was designed and made by Carrington, Thomas & Co. in Charleston and included panels showing Fort Sumter, St. Michael's Episcopal Church, Fort Moultrie, City Hall, and a view of the Battery. The set included a bowl, tray, and ladle that all included the seal of the city. When the ship was decommissioned, the service was returned to Charleston where it was displayed, for a period, at the Charleston Museum; it was again given to the next USS Charleston in 1936 and again returned to the city when that ship was itself decommissioned.