CSS General Beauregard, a 454-ton side-wheel river steamer, was built at Algiers, Louisiana in 1847 as a towboat. Under the name Ocean, she was taken over by the Confederacy in January 1862 and converted a "cottonclad" ram. Renamed General Beauregard, she was commissioned as part of the River Defense Fleet in April 1862 and sent up the Mississippi to Tennessee. She took part in the naval actions off Fort Pillow on 10 May 1862 and Memphis on 6 June. In the latter action, General Beauregard closely engaged the Federal ram Monarch and ironclad Benton before being disabled and sunk.