NX class decks
The decks of an  Starfleet vessel:

 A Deck
 Bridge ()
 Captain's Ready Room ()
 Situation room ()
 Warp nacelles

 B Deck
 Crew quarters ()
 Energy distribution systems
 Sensors
Secondary relay ()
A1 and A3 bulkheads ()
 Access Tube 17 Baker ()
 Nacelle access tunnels

 C Deck

 Crew quarters ()
 Life support ()
 Upper observation deck
 Deuterium tanks
 Plasma chamber
 Gymnasium ()

 D Deck
 Engineering, upper section ( production schematics)
 Cargo bays ()
 Crew quarters ()
 Guest quarters ()
 Decon ()
 Transporter
 Section J-15: EPS manifolds ()
 Access tube 7 ()
 Classrooms (2165 of alternate timeline ()

 E Deck
 Engineering, lower section (,  production schematics)
 Sickbay
 Captain's quarters ()
 Crew quarters ()
 Launch bays ()
 Launch bay 1 ()
 Science labs ()
 Mess hall/movie theater
 Navigational deflector
 Navigation control thrusters
 Impulse engines
 Escape pods
 Docking ports ()
 Cargo Bay 2 ()

 F Deck
 Armory ()
 Forward torpedo room
 Phase cannon assembly ()
 Lower observation deck
 Escape pods
 Launch bay doors

 G Deck
 Sensor arrays
 Grapplers
 Guest quarters ()

Background information

A master systems display style cross-section of the NX-class appeared in the Propworx auction catalog.