I played a couple of ACW naval games using a set of rules based on Bob Corderey's 'Gridded Naval Wargame' yesterday. Aside from the fact that the version I was playing is suitable for a 3x3 grid, I'm not at liberty to tell you any more about the rules than that at present.
I picked vessels that were operating in and around Mobile Bay, partially because there were ironclads in my collection that rarely got to se the light of day an I thought that it would be interesting to try them.
In the first action two Union gunboats, the USS Metacomet and USS Port Royal faced the Confederate armoured battery CSS Tuscaloosa. The Union ships outgunned the Confederate vessel, but lacked its armour.
The Union manage to get broadside on and start to batter the Tuscaloosa.