Brakt class

The Brakt-class was a type of fast attack ship that entered service with the Klingon Defense Force in 2370. The Brakt resembled a cross between a and  starships. 

A pair of Brakt-class vessels attacked a Cardassian convoy under Starfleet escort while the convoy waited for the Cardassian replacement escort at the Federation-Cardassian border in early 2372.