This Bentusi vessel was seen only briefly during the Taiidan ambush, trying in vain to escape. Before the release of the game, a design sketch was floating around showing this vessel, labeled "Bentusi Cargo Barge," which is what the model is also labeled in the internal game code.

We never actually see the rear end of this ship in the one sequence in which it appears, but now through the wonders of hacking, here it is! Like the Bentusi Tradeship, the barge has no obvious engine exhausts... it just scoots along via some sort of reactionless drive.