Actually yes. I was testing new BR changes to hostility requirements for getting PB. And it seems that port BR is equal to needed sunk ships BR directly. Earlier for 1 ocean i had about 12 % hostility on port now 6 of them was enough for 5k BR port.
Im willing to fully cooperate on this matter. I was just testing some game mechanic and im willing to clear my account from any benefits of it (xp, reals, doublons etc.).