Abandoned boats oftentimes litter the coastlines and beaches of Far Cry 3's Rook Island.
There isn't much in the way of explicit storytelling related to the boats, but it's their presence alone that implies sinister things about the island.
Based on the ships, as well as other subtle visual clues like the luggage and passports, serve as a reminder of just how many people have been kidnapped, sold and killed by Vaas.
