The Dramen patrol ship was a small one-man spacecraft designed for patrol duty in the Dramen star system. This type of craft was slightly larger than a Federation shuttlecraft.
In 2270, Demos pursued the USS Enterprise in a patrol ship, hoping to stop James T. Kirk from investigating Dramia II. The commander discovered that the Enterprise had "haphazardly" left the shuttlebay doors open, allowing the patrol ship to enter, seemingly "unnoticed".
In reality, it was part of a plot to lure him aboard so that he could be arrested as a stowaway and thereby no longer interfere with Kirk's investigation. (TAS: "Albatross")