The CDS Gratok was a Cardassian freighter starship of the Cardassian Union's Central Command in the 24th century The Gratok collided with the Klingon passenger vessel Chut over Raknal V in 2333. Both the Chut and the Gratok were destroyed with all hands lost. The Gratok's captain was named Kater Onell. (TLE novel: The Art of the Impossible)