The Ferengi cargo ship was a was a generic term used to described any type of cargo ship used in the Ferengi Alliance during the mid-24th century.
In an heated discussion, between Geordi La Forge and a hologram of Leah Brahms, on potential modifications on the USS Enterprise-D propulsion systems, Brahms defended her theory stating that it was her design and that she did all the calculations herself. La Forge, who thought her theory would blow the ship up, did not care if she designed it and told her: "I don't care if you built it with your bare hands out of an old Ferengi cargo ship, it's going to go – boom!" (TNG: "Booby Trap")
Lwaxana Troi later referred to the Krayton, a D'Kora-class starship, as a "Ferengi cargo ship" as she recalled the horrible incident she had aboard it several years prior. (DS9: "The Forsaken")