The Ma-Karn-class (designated Theta-class by Starfleet) was a type of raider utilized by the Miradorn in the 24th century.

Ma-Karn-class ships were well armed attack vessels, with dual torpedo launchers and dual plasma charge emitters located at the front of the vessel. Ma-Karn-class vessels were unusually large for a vessel of their capabilities, to accommodate Miradorn twins among their crews. These raiders were unscannable largely due to their design. (CCG set: Second Edition; DS9 episode: "Vortex"; CCG set: Deep Space Nine)

In 2369, a Ma-Karn-class raider commanded by Ah-Kel traveled to Deep Space 9. During the visit, Ah-Kel's twin, Ro-Kel, was killed by a man named Croden. When a Starfleet runabout left the station to return Croden to his homeworld in the Gamma Quadrant, Ah-Kel pursued them. The raider was later disabled by the ignition of toh-maire gas in the Chamra Vortex. (DS9 episode: "Vortex")