Yridian ship
Graphic depicting convoy
A Yridian ship was a type of convoy vessel used by the Yridians.
In late 2370, Starfleet put together a Yridian convoy as lure for a Maquis attack. The convoy of six ships left Deep Space 9 for the Demilitarized Zone, destined for Cardassian space, carrying a supplies of isomiotic hyposprays, plasma flares and quarantine pods. (TNG: "Preemptive Strike")