Praxeum ships were large starships that served as mobile Jedi academies. The most notable example of a praxeum ship was the Chu'unthor, which crash-landed on Dathomir more than three hundred years BBY, though other examples from the era of the Ruusan Reformation, the Great Sith War, and even the Great Hyperspace War and earlier are known to have existed, such as Master Arca Jeth's SunGem.