 Usually, the only entrance to the castles would be via a rope ladder that would only be lowered for the villagers and could be kept away when invaders arrived.Philippine ships, such as the "karakao" or "korkoa," were of excellent quality and some of them were used by the Spaniards in expeditions against rebellious tribes and Dutch and British forces.Some of the larger rowed vessels held up to a hundred rowers on each side besides a contingent of armed troops.