The first and last pictures on the DITL entry seem to show rows of lights similar to window rows on the back portion of the D'Deridex. Looking at the images I'd hazard a guess that the front and back (the beak and the tail) are habital, probably joined by access tunnels/turbolifts/other conduits through the necks with engineering being either in the tail or along the upper spine/wing.
"All this has happened before --"
"But it doesn't have to happen again. Not if we make up our minds to change. Take a different path. Right here, right now."