PotBS - Dev Log @ Official Site
A new dev log at the official Pirates of the Burning Sea site takes a closer look at the landmark manager.
At the heart of the PvP and server victory systems in the mission server there lives the Landmark Manager, which keeps track of the ownership and the PvP information for each port in the world (NOTE: What many of you players call "ports" we also refer to as "landmarks" internally in the mission server. I'll be using both terms interchangeably). Each port has a default owner (England, Spain, France, or Pirate) and ownership is spread out nearly evenly by default.
Source: Flying Lab Software