Something of an oddity, Dreadnought (seen in the episode of the same name) is a rare example of the Cardassians producing a weapon that out-performs anybody else. It's repeatedly called a missile in the episode, but really it's more an automated starship in its own right. I've had to guess at a lot of the specifications since we're not told a great deal of definitive information in the episode - In keeping with the statement made by B'Elanna about Cardassian designers, I've tried to depict it as a mixture of the ingenious and the primitive. Basically, a good idea strangled by the political system back home.