Man, the Cortez is huge. It's longer than B5! I wonder how many people are on that thing?

Looks like most of it isn't habitable space, though. I guess it's designed so that extra modules can be attached if needed - maybe for transporting entire colonies? Throw in engines, hangar bays, enough fuel and supplies for years on end... I think JMS said somewhere explorer ships also set down temporary jumpgates when they find planets worthy of later in-depth surveys, so parts for those are going to take up even more space.

Seems like even if you assume it's only got a tenth as much living space as B5, that's still tens of thousands of crew, though.