Klingon cruiser

A Klingon cruiser is a type of cruiser starship operated by the Klingon Empire and the Klingon Defense Force.

Over the course of history, Klingons have had many different types of cruiser vessels of various designs

Theta 116 survey
In the year 2365, a Klingon cruiser passed the Theta 116 star system and performed a sensor sweep. The Klingons detected spacecraft debris in orbit, and notified the Federation of the discovery, moving on n their course without further investigation.