- windows... in the cieling?Did you ever notice the window in that ring of quarters? It would be up high, in the ceiling right beside the tilting wall - and it's in the right place, just never seen a window on the outside!
- air conditioning ducts
The window in the captain's cabin (and I guess every other cabin on the same ring on deck 5 - same radius from the centre of the deck) is on the ceiling - you can see the way the ceiling is flat near the halway door, then curves down towards and over the bed, then it hits the tilted wall... in between where the ceiling is flat and where it hits the tilted wall is the window.
Directly above deck 5 is the water tanks on deck 4. The tanks end just above this ring of cabins on deck 5, as the hull gently slopes down and becomes horizontal at the outer edge of deck 5 (gotta know why things work on a star ship!)
They never made a big thing about the windows, but I believe they're there... and there's only just the hull right above where I believe it is.
Each cabin should have those air flow controls - each one has it's own environment, right? I haven't put that in my model. I haven't even put the red stripe on all the hallway walls yet!