When I finally thought that I would finish the main story, I captured the Man'owar and destroyed another ship, but the frigate seems impossible to beat down. I tried to board, but the captain is unbeatable (like an undead), that was fine to me, since I identify him as the leader of the pirates in Nevis. But even by naval battle, the ship hull can't go below 74%, I made 5 shot with all the Man'owar cannons close to him, and it simply didn't suffered damage, so I let him flee. But when I enter the island, passing through the small rock corridor to the center of the island, and reach the shore, the moor icon just don't appear, I can't continue. what can I do?? 
