A Duroc-class cargo freighter was a type of starship of Tellarite design, in general use sometime prior to the mid 23rd century. The grandsire of Starfleet Lieutenant Molan lek Xav had crewed on a Duroc-class vessel. In 2269, the USS Lovell observed a cargo freighter of this class within the Delta Triangle. (SCE eBook: Where Time Stands Still)