The Immortal D7 cruiser, which became an enduring
symbol of Klingon military power in the second half of the 23rd century, was
rushed into service in the early 2250s to fulfil roles of offense, defense,
and diplomacy. The design was a scaled up version of the D-1 cruiser of
almost 100 years earlier. The D-7C was part of the smaller more agile family
of D-7 variants that ultimately led to the D-7M k't'inga.
