The lower decks of the engineering section or secondary hull of the Constitution II class.
About this creation
The complete file.
Deck R houses the navigational deflector emitter in a small housing. On either side of this are the inorganic matter fabricator and defabricator. Environmental Engineering surrounds the intermix shaft, followed by a waste management room and a hi-bay for the auxiliary fusion reactor on Deck S. The cargo bay mid-deck follows, with lifeboats, catwalks, and turboshafts punctuating the space. Aft is the upper Hangar Deck, housing the four standard Type 4 shuttlecraft (NCC-1701/1 Halley, /3 Herschel, /5 Copernicus, and /7 Galileo). On each side are rows of lifeboats. Aft is a transporter emitter, followed by the shuttlebay tractor beams, a gravity field generator, and a shield generator.
Deck S begins with a deuterium tankage room for the main reactor. Starboard of the intermix shaft is the auxiliary fusion reactor, with a deuterium cryogenic unit to port. There is also a Secondary Bridge serving the engineering hull in the event of saucer separation, should the engineering section remain serviceable. (Sadly it’s rather small and won’t fit all the usual stations.) The cargo bay floor is next, with turboshaft stops and cargo transporters. Behind this are the elevator pad mechanisms, and more lifeboats.
Deck T houses the Main Reactor Control room. Unlike later warp core assemblies, which place the reaction chamber itself in main engineering, here it is kept closer to the outer hull, right above the antimatter pods. Next are a set of bathrooms and snack bars, followed by the botanical garden with its distinctive large windows. The final science lab, botany, is next. There are two large fitness rooms – the only ones aboard – and two personnel transporters followed by more lifeboats. (I’ve taken some liberties with this deck: I put the fitness rooms where Kimble had more batteries. I also ran out of room for the swimming pool, so I left it out entirely. I also skipped the main tractor beam emitter, which would have been between the snack bars. There is no corresponding hatch on the ventral hull, but there is a protruding device on the undercut that I think should be the main tractor. Instead I took a cue from the Shane Johnson plans, which elaborate the garden area better.)
Deck U houses the Warp Core. Next are two massive storage/conversion units for hydrogen fuel. The Bussard Collectors in the nacelles collect free hydrogen atoms in deep space, and these units convert them to a usable isotope for the matter supply. Next is an air conditioning room followed by two communications arrays.
Below Deck U is a low equipment bay housing the ventral phaser turrets, accessible through a hatch in the corridor above.
Looking down the intermix shaft from Main Engineering.
A classic view of the cargo bay.
The opposite view looking forward.
The Auxiliary Reactor.
The Secondary Bridge. Since the room is so small most of the stations are stand ups.
The Botanical Garden is a major recreational area aboard ship featuring large windows.
Forward, on each side of the entrance to the Main Reactor Control Room, are bathrooms and snack bars.
The Fitness Rooms include weight training, treadmills, and exercise areas.
The Warp Core and subsystems.
And some more sections of the saucer, which I’d neglected till now:
The engineering section is looking great, but there are still a couple of big gaps in the hull where the engine pylons will go. Next time!
Oh, I misclicked the rating, I just noticed, sorry. Shaping is truly mindblasting - I know I am a troll, but I just can't help thinking of that with all this huge structural building knowledge you accummulated, what a superb superyachts you could build, with all the lavishing and luxury interiors - and it would be absolutely just and realistic in engineering point of view also...