Mass production battle cruiser for the Empire from before 2150 until 2230s

Mass production battle cruiser for the Empire from the 2230s Until 2257. Production was then switched to the ubiquitous D7.

The ubiquitous Klingon Battle cruiser for the Empire. Rushed into mass production by Chancellor L'Rell in the 2nd year of the 4 year war in 2257 and in constant production until the switch to the K'T'INGA class in the 2270s.