K'Vort-class bird-of-prey

Star Trek: The Next Generation

Episode: TNG 163 - Yesterday's Enterprise

A larger variety of the Klingon bird-of-prey, as seen in the alternate timeline of the 20-year, Klingon-Federation War.

Two of the K'Vort-class ships attacked the alternate Enterprise-D and destroyed her, while Picard and crew bought time for the Enterprise-C to return to its own timeline.