"The DY-100 class were cryogenic sleeper ships from the late 20th and early 21st centuries.
The production of the DY-100 class sleeper ship began sometime prior to the conclusion of the Eugenics Wars in 1996 and was ended before or around 2018, when major breakthroughs in fusion-driven sublight engine technology made the far slower and less advanced sleeper ships of the previous generation obsolete." (Memory Alpha)
Previews (attack and death)
The production of the DY-100 class sleeper ship began sometime prior to the conclusion of the Eugenics Wars in 1996 and was ended before or around 2018, when major breakthroughs in fusion-driven sublight engine technology made the far slower and less advanced sleeper ships of the previous generation obsolete." (Memory Alpha)
Previews (attack and death)