From Wikipedia.
Also referred to as the CSS William H. Webb.
A 655-ton sidewheel steamship originally built in New York City in 1856 as he William H. Webb.
At the onset of the Civil War, she was seized by the Confederates and received a privateer's commission in May 1861 but instead was used as a military transport until January 1862. Then she was converted into a cotton clad ram by the Confederate Army after which she served on the Red and Mississippi rivers.
On February 24, 1863, under the command of Captain Charles Pierce, she participated in the sinking of the Union ironclad USS Indianola.
--Old B-R'er