Board Thread:Warhammer 40k General Discussion/@comment-25618639-20150604030859/@comment-8881468-20150607161700

Fuel? which is debateable, the same goes for the "current" w40k tech where power consumption is always an important question.

at least if I remember  Salvations's reach of the gaunts ghost series or "relentless" or the mechanicum troligy or or or ... ^^

if it lasts long you need stasis pods for most of the crew but some need to be alive, as automation is pretty shitty atm) and that creates a generation ships alongside the sleeper ship.