A T'Lani cruiser was a type of starship utilized by the T'Lani during the late 24th century. This class of vessel greatly outmatched Starfleet's Danube class runabout in firepower and defenses.
One cruiser was used to store and to perform experiments on destroying the Harvester weapon in 2370. (DS9: "Armageddon Game")
While consistently referred to in the script  and the Star Trek Encyclopedia as a "T'Lani munitions cruiser," this vessel was only identified as a "T'Lani cruiser" in the episode's dialog.
For information about the history and design of this model, please see: Studio models