I've always been a little nit-picky with battle scenes just because they are normally busy and distracting. But yours while maintaining the chaos of the battle, also manages to capture the order that a MOC should have. Excellent work on the ships. Definitely my favorite part, however the city is also very well done. Fantastic build here.
You obviously did your homework on this, very nice. I like the fire on the roof and the waves, I don't think they would have worked on a larger wooden piece but with the ships to break up the water I like them.