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