B[6] B'rel, Ship, Klingon, 
"Small Klingon bird-of-prey with a crew of about a dozen, commonly used as a scout ship."
-B'rel Scout Class[] May not be carried aboard birds-of-prey; Cloaking Device
-RANGE: 7, WEAPONS: 5, SHIELDS: 5
Now exists as B'rel.

B+[1] IKC B'Moth, Ship, Klingon
"Klingon battle cruiser reported missing while on patrol near Cardassian border in 2373. Found by General Martok who rescued its 35 crew members."
-K't'inga Class[] Cloaking Device; May report damaged to any location
-RANGE: 6, WEAPONS: 6, SHIELDS: 6

D[301] IKC Drovna, Ship, Klingon
"Klingon warship. Illegally mined the Bajoran system with cloaked explosives. Infiltrated by Worf and Kurn to obtain the detonation codes for the mines."
-Vor'Cha class[] Cloaking Device, Tractor Beam, SD Mine Disputed Region
-RANGE: 8, WEAPONS: 8, SHIELDS: 8

G[177] IKC Gr'oth, Ship, Klingon, 
"Battle cruiser commanded by Koloth in 2267. Its crew made use of the Federation's shore leave facilities. Seen by the cloaked Defiant."
-D-7 Class[] Tractor Beam, Cloaking Device; May dock at  facilities
-RANGE: 6, WEAPONS: 7, SHIELDS: 6
Now exists as IKC Gr'oth.