Enterprise-D and Romulan supply ship

The Enterprise meets with a Romulan supply ship in 2369

A Romulan supply ship was the designation given to some Romulan vessels that carried cargo supplies for the Romulan Empire during the late-24th century.

During the Klingon Civil War of 2368, cloaked Romulan supply ships were used to supply the House of Duras. Near the end of the war, Commander Sela led a fleet of 15 supply ships that attempted to run a blockade led by the USS Enterprise. Her ships were exposed by the USS Sutherland, forcing her to withdraw. Starfleet shared its sensor scans of the supply ships with Chancellor Gowron, who noted that they would be most useful. (TNG: "Redemption II")

At least three of the ships were D'deridex-class warbirds; it is uncertain whether the remaining supply ships were of the same or a different class.

In 2369, a D'deridex-class warbird had this designation when it transported several Klingon youths from the planet Carraya IV to the USS Enterprise-D, after they had decided to leave a secluded prison camp on the planet to learn more about their people. (TNG: "Birthright, Part II")