Full on steam ironclads? No, but there are some sailing ships that incorporate metal armor. The empire of Ferric has warships with metal hulls that are still powered by sails, which most people call “Iron Islands” because no one has actually seen them leave harbor. While their portentously threat on a straight up fight have been theorized, professional think these Iron Islands were just the dwarves trying time make Iron Clads, failing due to the weight of the ships making them sluggish and impossible to maneuver in the ocean, and trying to save face by saying that they’re being saved for emergencies.

However armored ships in general are a thing, in particular the nation of Jailailk and Atagaanilk utilize things called Turtle Ships, which instead of putting armor on the hull of the ship, the armor is on the deck, effectively creating a large barrier over where the sailors are. Powered by both sails and rowers, despite its armor it’s actually very agile, and designed to ram into larger ships to scuttle or to allow its crew to board. The Atagaanilk ships are sometimes armed with cannons thanks to their trade with Doros, but this usually meant making more space for cannons and less rowers, so their Turtle Ships are slightly slower, and most don’t have more than four cannons, which is not a lot for a warship.

All this being said, the typical meta when it comes to naval warfare is to be able to move fast, maintain your formation, and shoot back hard, so yo save on cost and weight most of the best warships don’t have much armor, or at least what armor they do have is rather light. Hence why Doros is one of the more powerful naval countries in the world thanks to having a massive army of fast moving, hard hitting ships, even if their defenses are lacking.