|Confederate States of America|
|Ordered:||May 1, 1862|
|Builder:||Confederate Naval Works at Selma|
|Launched:||February 7, 1863|
|Completed:||August 1, 1863|
|Out of service:||April 12, 1865|
|Fate:||Scuttled in Spanish River to prevent capture|
|Length:||150 or 152 ft (45.7 or 46.3 m)|
|Beam:||32 ft (9.8 m)|
|Draught:||7 ft (2.1 m)|
|Speed:||4 knots (7.4 km/h; 4.6 mph)|
Huntsville was ordered on May 1, 1862 by the Confederate States Navy. She was launched at the Confederate Naval Works at Selma on February 7, 1863 and finished in Mobile. She was finally delivered on August 1, 1863. She was only partially armored, with the armor plate delivered by the Shelby Iron Company of Shelby, Alabama and the Atlanta Rolling Mill. She had defective engines that were obtained from a river steamer and an incomplete armament, so was assigned to guard the waters around Mobile.
Huntsville escaped up the Spanish River following the Battle of Mobile Bay on August 5, 1864. The city of Mobile held out another eight months, with the upper portion of Mobile Bay remaining in Confederate hands. She, along with the CSS Tuscaloosa, was scuttled where the Spanish River splits off from the Mobile River on the north side of Blakeley Island, just north of Mobile, on April 12, 1865 to prevent her capture following the surrender of the city. The wreck was located in the river in 1985.
- National Archives of the United States, Record Group 45, David G. Farragut to Gideon Welles, September 26, 1864
- Herbert J. Lewis (September 23, 2011). "Selma Ordnance and Naval Foundry". The Encyclopedia of Alabama. Auburn University.
- Gaines, W. Craig (2008). Encyclopedia of Civil War Shipwrecks. LSU Press. pp. 1–8. ISBN 978-0-8071-3274-6.
- Silverstone, Paul H. (2006). Civil War Navies 1855–1883. The U.S. Navy Warship Series. New York: Routledge. ISBN 0-415-97870-X.
- Still, William N., Jr. (1985). Iron Afloat: The Story of the Confederate Armorclads (Reprint of the 1971 ed.). Columbia, South Carolina: University of South Carolina Press. ISBN 0-87249-454-3.