The Mockingbird-class was a type of scout that saw service with the Federation Starfleet during 23rd century. (Ship Recognition Manual, Volume 4: Starships of the Original Series Era) The Mockingbird consisted of a saucer section fashioned after the one used by the Excelsior-class, though it was smaller and had a more ovate side profile. The engineering hull was connected direction to the bottom of the saucer and held the ship's navigational deflector and torpedo launcher. The nacelles were connected by a T-shaped pylon connected to the dorsal aft of the saucer.