Legends of the High Seas could definitely cover this.
If you're looking for something different, I've heard positive things about, but haven't played, Flashing Steel and also Gloire: Swashbuckling Adventure in the Age of Kings. The former is by Ganesha Games, so I would hazard to guess that's it's the "Song of..." system adapted to swashbuckling adventures. Don't know much about the latter.