Iron and Fire is exactly what I have been looking to find for some time: rules that govern the full range of ironclad combat not jut the American Civil War. The rules are detailed, but not not overly complex. The combat is straight-forward. I want to play the battle of Lissa, and I was pleasantly surprised to find every ship of both fleets! I haven't checked ship-by-ship, but I think that ever ship of that era is covered!
The rules are well laid out and easy to follow.
I would recommend Iron and Fire, particularly to someone interested in battles beond the American Civil War