- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Designation of the smaller Bird-of-Prey class, in use within the Klingon Empire since the 2280s. Two of the B'Rel ships were used by renegade Ferengi DaiMon Lurin to board and commandeer the U.S.S. Enterprise-D.
An unnamed Klingon vessel of this class ferried Kang, Kor, Koloth and Jadzia Dax to Secarus IV to fulfill a blood oath of vengeance against the Albino depredator responsible for slaying the three Klingons' firstborn children.
The vessel's disrupter banks were modified to bombard the surface from low orbit with tetryon particles which disarmed all directed energy weapons, evening their odds against his forces, and was operated without additional crew.