Yellow Admiral, this period is immensely rich in tactical thought. It is one of the things that makes it more interesting to wargame than any other. If you have the chance, get hold of some tactical pamphlets and essays from the time. Wargaming-out the ideas in them makes for some great scenarios.
The downside to this is that it is hard to say what a typical battle would look like.
Some sailors and theorists thought that broadsides would still be exchanged in line ahead, as they had been in the days before armour.
Most, tho, thought that the American Civil War and the Battle of Lissa had shown that the sort of middling guns you could mount on the broadside of a seagoing ironclad were unlikely to have a decisive effect. Battles would be won by the ram and fleets that exposed their broadsides to the enemy (as the Italians had at Lissa) would tend to lose.
That opens the way to a host of interesting formations – quarter lines, arrowheads, lozenges, etc. Most, tho, emphasise line-abreast rather than line ahead. Fleets would charge, rather like knights in a tournament. Guns which cd bear ahead would shoot on the approach. There would then be a dogfight. Ramming was difficult, so there would be opportunity for broadsides to be exchanged at close range by ships that had avoided collision. The fleets would shake-out and perhaps return for another pass.
Much would depend on seamanship, but it was realised that there would be a large random element in these encounters. Hence, naval architects' interest in building ships with big-enough guns bearing fd to make a decisive difference on the approach. A lucky hit on, say, an enemy's conning tower might make him much easier to ram. As ships spun past one another at close range a single hit with a big gun might take-out an enemy's engines or penetrate armour through to a magazine. A parting shot might disable his steering.
I cd go on for pages. There were lots of other uses for these big guns. Eg in the ship v shore actions which were likely to be common. It's a fascinating period. You'll enjoy it.
Alan