Boarding
This the only effective way to acquire the entire loot. To think about boarding in the first place, you first need to immobilize the ship, i.e. damage it to the state where the condition meter is at its critical level. (marked in red). The larger the vessel the more difficult the crew to eliminate. Disposing of everyone will immobilize the sailing ship. The enemies will not only be incapable of sailing ahead, but also to defend against possible attacks....