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This D7-class Klingon battle cruiser was used during the Federation-Klingon War. The design was also used as a prison ship. (DIS: "Battle at the Binary Stars", "Choose Your Pain")


One of these ships fought in the Battle of the Binary Stars in 2256. (DIS: "Battle at the Binary Stars"). A D7 of this design was able to intercept a shuttle containing Starfleet Captain Gabriel Lorca en route back to the USS Discovery. At the time, Harcourt Fenton Mudd and Ash Tyler were incarcerated on this ship. Lorca and Tyler were able to eventually escape, leaving Mudd behind. (DIS: "Choose Your Pain")

Technical data

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The brig aboard a D7 prison ship

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. (DIS: "Choose Your Pain")

Ships commissioned



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. [1]

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