Consists of three main sections: a saucer-shaped primary hull housing the Command section; a secondary, cigar-shaped hull (Engineering section) connected beneath it by a large, slanting pylon; and at the rear of the saucer, connected to the Engineering hull by pylons, are the two long, projecting engine pods; the series of small domes on the top center of the saucer is the bridge, the ship's command and nerve center containing all the computer controls; the primary Command hull could operate independently of the other components and contained its own impulse engine at the rear of the saucer but was limited to sub-light speeds; overall, painted gray and gray-green.