The problem seems to find enough information about these 14 "seaworthy" CSS vessels. Conway´s All The Worlds Fighting Ships 1860-1905 on page 136 only mentions, that the side-wheel ships
CSS Gaines and
CSS Morgan with partial 2 inch protection and the adapted merchant ships
CSS Governor Moore,
CSS Jamestown,
CSS Patrick Henry and
CSS Selma (CSS Florida) were among them.
But the main reason for my earlier post about the CSS Navy was to add an animated ironclad to this thread, as I think it gives more flavor to this story when real gunfire animation can be seen. In this sense: Here is the gunboat CSS Chattahoochee, so only in service since early 1863:
View attachment 690921