I enjoyed the ship vs ship combat rules. There is a lot here that will be useful in any adventures you run where ships will fight, or where a monster will attack a ship.
There are cool rules for equipment, cannons, roles on the ship, and more. It's the kind of read that is not only useful for your game, but helps you come up with more things you might want tinker with to make sea combats fun. Recommended!
[5 of 5 Stars!]