Exit from Kodlonu Hamlet and talk to Rahlon in Mehtani Keys. Then follow the quest marker until you've reached the southern end of the south-western island. Your objective is to eradicate the group of corsairs in front of the broken boat. The group consists of 1 Corsair Berserker, 2 Corsair Bosun, 2 Corsair Flogger, 1 Corsair Raider, 1 Corsair Blackhand, and 1 Corsair Cutthroat. If you don't want to aggro more corsair at the same time, avoid the group patrolling behind the boat. After defeating the Corsairs, simply map travel back to Kodlonu Hamlet and get your reward.