Not much to show for tonight, but I did start roughing out S-deck. I need to go back and install equipment in these decks, but I think I may actually finish laying out all the secondary hull decks first.
S-deck has the bottom of the main Cargo Bay, and the bottom-most hangar deck. I can see I'll need to install lift-equipment for the two shuttle elevators flanking the aft turbolift. Fortunately, there is plenty of inter-deck space in the secondary hull. I have not put in the doorways, nor most of the walls and other structures yet. This is about how the other two decks looked at the very start.