CSS Alabama, a screw sloop-of-war built in 1862 for the Confederate States Navy. The vessel was built in Birkenhead on the River Mersey opposite Liverpool, England, by John Laird Sons and Company. Launched as Enrica, she was fitted out as a cruiser and commissioned as CSS Alabama on August 24, 1862. Under Captain Raphael Semmes, Alabama served as a successful commerce raider, attacking, capturing, and burning Union merchant and naval ships in the North Atlantic, as well as intercepting American grain ships bound for Europe. The Alabama continued its wrath through the West Indies and further into the East Indies, destroying over seven ships before returning to Europe. On June 11, 1864, the Alabama arrived at Cherbourg, France, where she was overhauled. Shortly after. A Union sloop-of-war, USS Kearsarge, arrived; and on June 19, the Battle of Cherbourg commenced outside the port of Cherbourg, France, whereby the Kearsarge sank the Alabama in approximately one hour after the Alabama's opening shot.

A screw sloop is a propeller-driven sloop-of-war. They were popularized in the mid-19th century, during the introduction of the steam engine and the transition of fleets to this new technology.