The Devore warship was a type of warship used by the Devore Imperium to patrol their territory in the Delta Quadrant. They sometimes operated in squadrons.
Tactically, a single Devore warship was comparable to a Federation Intrepid-class starship. The vessel was equipped with refractive shielding, which rendered it difficult to detect on sensors.
While passing through Devore space in 2375, the USS Voyager was stopped for inspection by several pairs of Devore warships. The inspections were to search for the presence of telepaths. (VOY: "Counterpoint")
For information on the CGI model of the Devore warship, see here.