The Sky Shipyards was the sector of Undertown devoted to the manufacture of sky ships. The vessels were constructed in the cradles and took off when finished. The Sky Shipyards were controlled by the Leagues of Undertown. The Galerider docked at the shipyards in Clash of the Sky Galleons. In the Third Age of Flight, Sky Ships were no longer produced in Undertown, but in the the Ledges of Great Glade.