Klingon D 4 battle cruiser Hardpointed

Klingon fleet, though it was eventually supplanted by the D5 class. The distinctive silhouette became as much a symbol of the Empire as the Imperial Trefoil itself, and was carried forward into the D6 and D7 classes. Some D4s served into the 2260s; Starfleet included them in Klingon tactical simulations, where they fought alongside the later D7 class against Constitution class vessels.
Klingon D4 Battle Cruiser The D4 class battle cruiser was a type of warship designed and built by the Klingon Empire during the mid 22nd and by the early 23rd century was the mainstay of the