I loved the battles. They can be a lot of fun. Manning the sails, using the wind direction to your advantage and loading the best ammo for the situation all makes up for a good fight.
I stopped playing it when it went "open world" I didn't like the speed boat sailing that use to sail from port to port. That just wasn't my thing.
i7 2600k @4.3Ghz, EVGA GTX 980Ti,16G RAM, TrackIR, Thrustmaster Warthog HOTAS joystick, MFG Crosswind rudder pedals, Saitec throttle quadrants/trim wheel and a custom panel.