The Qugh class was a type of destroyer used by the Klingon Empire during the mid-23rd century.
Several vessels of this class fought in the Battle of the Binary Stars in 2256. (DIS: "Battle at the Binary Stars")
One Qugh-class destroyer, equipped with a cloaking device, participated in the ambush of the USS Gagarin. It was engaged by the USS Discovery. (DIS: "Si Vis Pacem, Para Bellum")
A Qugh-class vessel was part of the armada that gathered to attack Earth in 2257. (DIS: "Will You Take My Hand?")