Captain Ioushuwa is a named, Tier 4 Fighter NPC of the Black Hand Faction. He is the Captain of the Black Hand stone ship. He shares a spawn point with Black Hand Captain, always located on the bow of the ship, overlooking a valley.
Captain Ioushuwa can be found at the following locations:
It would be best suggested that you take care of all the thralls on the entire upper deck anywhere near the Captain before deciding to take him on. Beware of his melee strike, it will take your health down to 15% in one swipe. Also known as the "Scourge of the Maric", a sworn foe and bandit to the Black Hand crew, the Captain is a very strong fighter to add to your thrall army.
Captain Ioushuwa at The Black Galleon