A small transport of Akritirian registry in service during the late 24th century. Such a ship was used in 2373 by Vel and Piri, members of the terrorist group Open Sky. They synthesized trilithium explosives from the ship's paralithium, which was used in the ion-based propulsion system. It was considered small enough to be towed into the shuttlebay of Intrepid class USS Voyager. (VOY:"The Chute")
Background
The transport's appearance was recycled footage of the toxic waste barge from TNG:"Final Mission."