The final battle concept in Pirates of the Burning Sea has gotten a lot of attention through the development process, evolving along the way into its current iteration.
Last night isildur posted a new dev log to explain the concept and mechanics behind the Final Battle system, as well as previews and information on the first four Final Battle maps players will come across in the game.
There are two ways for an attacker to capture a port. First, they can defeat all the defending ships. When there are no defenders left, the port is lost. Second, they can assault the port itself, landing and attacking in hand-to-hand combat.
On the maps that follow, the port is a green dot labeled ‘P’. Near every port is a gun emplacement that will fire on any attackers that come near. If the emplacement is active, the port is locked to both attackers and defenders. As soon as the emplacement is destroyed, a timer begins; 30 minutes after its destruction, both sides can enter the port and fight for control of it.
Head over to The Final Battle to read more. There's some concept art in the article too, to give an idea of what all takes place in each map.