An early Earth interplanetary ship type of the 1990s fitted with suspended-animation berths, best known through the SS Botany Bay that carried Khan Noonien Singh and his followers into exile.
The DY-100 is a slow, pre-warp vessel built in sections, with a conning tower forward and cargo modules along its spine. Because journeys took years, crews travelled as sleepers. The historian Marla McGivers notes that such ships fell out of use around 2018 once faster engines made them unnecessary.
In Space Seed the Enterprise finds the Botany Bay adrift in 2267 with more than seventy people still alive in its sleep units. Their leader proves to be Khan, the genetically engineered ruler who vanished at the end of the Eugenics Wars. After his attempt to seize the Enterprise, Kirk settles the group on Ceti Alpha V, where the ship's cargo containers serve as their shelter in Star Trek II: The Wrath of Khan.