The Voth research vessel was a type of starship used by the Voth for scientific research in the late-24th century. They were equipped with transwarp drives.
In 2373, scientist Forra Gegen and his assistant, Tova Veer, used this type of vessel during their investigation of the USS Voyager and the Distant Origin Theory. (VOY: "Distant Origin")
For more information on the studio model used, see Studio models (VOY).
In Star Trek Online this type of ship is called a either a Voth Palisade Frigate (NPC version) or a Voth Palisade Science Vessel (playable version available in the Lobi store after Season 8).