The Dreadnaught-class was a heavy cruiser-type starship in service to the Romulan Imperial Fleet during the early to mid-23rd century. Commander Keras served on a ship of this class for half his life. This ship was destroyed by the Praetor in a demonstration of the Romulans new plasma weapon mounted to the new Vas Hatham-class ChR Gal Gath'thong. (TOS comic: "Alien Spotlight: Romulans")