There is a lithograph of supposedly the CSS Ironclad Manassas attacking the USN Hartford. Looks like the artist got bad information. In the lithograph, the Manassas looks like a casemate ironclad similar to the Merrimac/Virginia. In reality, the Manasssas had an oblong shape with only one cannon. Her primary weapon was the ram. One has to give the Confederates credit for imaginary use of the original ship acquired in the conversion to an ironclad.