D7 class (2256)
This D7-class Klingon battle cruiser was used during the . The design was also used as a prison ship. ()

History 
One of these ships fought in the Battle of the Binary Stars in 2256. (). A D7 of this design was able to intercept a shuttle containing Starfleet Captain  en route back to the . At the time, Harcourt Fenton Mudd and  were incarcerated on this ship. Lorca and Tyler were able to eventually escape, leaving Mudd behind. ()

Technical data 

This type of vessel had a crew complement of between 30 and 40. It was equipped with holding cells and interrogation areas, and carried compliment of at least three Klingon raider auxiliary craft. ()

Ships commissioned 
 Unnamed D7-class starships

Appendices

Appearances

Background information 
The class was described as "D7" in the dialogue of "Choose Your Pain", while the name Sech-class was conceived by writer Kirsten Beyer.

External link
 
D07 class