For example,
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But I bet other people could show many more and better examples of fantasy-world-looking ships that don't just look like real-world 18th Century ships.
Don't want to go off-topic though, it's just that I think the Lanun are interesting being a naval-themed civ but I don't get the impression that ships and sea warfare matter much to most people anyways or it wouldn't be dismissed with a "Probably look like ships do now" remark.