Though the original designs for the Casco-class monitors were drawn by John Ericsson, the final revision was created by Chief Engineer Alban C. Stimers following Rear Admiral Samuel F. Du Pont's failed bombardment of Fort Sumter in 1863.
Chief Engineer Alban C. Stimers revised the original John Ericsson designs for the Casco-class monitors following Rear Admiral Samuel F. Du Pont's failed bombardment of Fort Sumter in 1863, resulting in a final version.