Medusan vessel
The Medusan vessel was a type of starship in operation in the 23rd century. Sharing some commonalities with Federation starship design, the vessel functioned under the authority of the Medusans.
In 2268, the USS Enterprise conveyed the Medusans' ambassador to the Federation, Kollos, along with Miranda Jones, to a rendezvous with a Medusan vessel following an unspecified diplomatic mission, and a short diversion through the galactic barrier. Jones had originally intended to mind-link with Kollos once the two had reached the Medusan vessel, which was bound for the Medusan homeworld; however, circumstances forced the link to be established aboard the Enterprise. (TOS: "Is There in Truth No Beauty?")
The Medusan Ship bears a Striking Resemblence to the Minuteman Class Starships in the Non cannon Video game Star Trek: Legacy.
The Medusan vessel went unseen in the original airing of the episode, only being referenced in dialog. Indeed, the original ending sequence had the Enterprise approaching the Medusan homeworld. This was altered in the 2008 remastered version of the episode, where a CGI model was created for the vessel.
Based on information obtained from Michael Okuda, no name or registry number was specifically assigned to the model. In terms of its design, Okuda added that "the basic idea was Dave Rossi's suggestion. He thought that because the Medusans were non-corporeal and might not have developed technology as we know it, they might use Federation hardware, so their ships could have a distinct Federation style."