F5L class

The F5L-class was a type of Klingon Empire starship, a bird of prey created as a subclass of the frigate in Klingon Defense Force service in the 23rd century. This Klingon bird-of-prey subclass was designed to serve as a frigate leader, with capacity to serve as a command ship in fleet actions, built on the standard QuD hull spaceframe. Ships of this type were easily modifiable, being refit and retrofit between the F5L and the similar. 

Known vessels

 * IKV Alacrity • IKV Audacity • IKV Axe Leader • IKV Axe Lord • IKV Barbarian • IKV Battle Leader • IKV Battle Lord • IKV Battle King • IKV Blood Leader • IKV Blood Lord • IKV Death Lord • IKV Demonfire • IKV Doom Leader • IKV Doom Lord • IKV Dragon Leader • IKV Dragon King • IKV Dragon Lord • IKV Ferocity • IKV Fire King • IKV Fire Leader • IKV Fire Lord • IKV Firestar • IKV Glory • IKV Marauder • IKV Storm King • IKV Storm Leader • IKV Storm Lord • IKV Urgency • IKV Venom • IKV War King • IKV War Leader • IKV War Lord