Tahna's scout ship was a Bajoran scout ship operated by Kohn-Ma operative Tahna Los.
After stealing an antimatter converter from the Cardassian Union, Tahna piloted the craft back to Bajoran space, pursued by the Galor-class Cardassian warship Aldara. As Tahna's scout ship approached Deep Space 9, Tahna requested emergency docking. Before his request could be granted, weapons fire from the Aldara caused a failure of the smaller ship's structural integrity. Station personnel managed to beam Tahna aboard before his ship was destroyed. (DS9: "Past Prologue")