The Monac shipyards were Cardassian-Dominion shipyards located above Monac IV, near the Monac star. Among the vessels constructed there included Galor-class warships, Jem'Hadar battle cruisers and Jem'Hadar fighters.
In 2375, a Klingon fleet attacked the shipyards but failed to destroy them, suffering losses of over thirty percent in the process. Shortly after, General Martok and Lieutenant Commander Worf successfully destroyed the shipyards using just the IKS Rotarran, by triggering a solar plasma ejection from a magnetic instability on the Monac sun. They had undertaken the mission to ensure Jadzia Dax's entry into Sto-vo-kor. (DS9: "Image in the Sand", "Shadows and Symbols")