Atlanta was built in Scotland as the merchant steamer Fingal, apparently for Confederate interests. In November of 1861 she ran the US blockade into the Confederate port of Savannah, GA. Unable to escape from that port, she was taken into the Confederate Navy and converted to an ironclad ram. She was renamed CSS Atlanta and entered service mid-1862. On 17 June 1863 Atlanta challenged the Union ships blockading Savannah, and was engaged by the monitors Nahant and Weehawken. In the course of the battle Atlanta ran aground, and the Union ships forced her surrender.

The captured Atlanta was taken into the US Navy and recommissioned in Feburary 1864 as USS Atlanta. After service in the James River, she was decommissioned at Philadelphia in June 1865. In May of 1869 she was sold. Her final fate is not recorded, but reportedly she became the Haitian warship Triumph and vanished off Cape Hatteras in December 1869, presumably en route to Haiti.

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