Frigate, by SPI
Fighting Sail, by SPI
Also would be interested to get Serpents of the Seas, the smaller scale standalone game in the Flying Colors series, by GMT.
I also have and love Tokyo Express, by Victory Games -- while it's a WWII solitaire game, it's AI system is amazing and inspired a lot of what I'm designing into my solitaire Great Lakes game, A Glorious Chance.