These are maps for System Shock 1 generated using the utility Shockmap, for which source code can be found below. Warning: these are giant browser-crushing tables and some browsers may choke and die on them, especially if you're low on memory. (Firefox, I'm looking at you.)
Deck R - Reactor and Power Systems
Deck 1 - Medical
Deck 2 - Research
Deck 3 - Maintenance
Deck 4 - The Cargo Pits of Ragnarok
Deck 5 - Flight Systems & Hangars
Deck 6 - Recreation & Executive Quarters
Deck 7 - Station Systems
Deck 8 - Security
Deck 9 - Command
Alpha Grove
Delta Grove
Beta Grove
Lower Cyberspace
Upper Cyberspace
SHODAN Cyberspace

shockmap-1.2 C source code.
Header containing HTML header/footer data. You need this to build shockmap, too.
unRESd tilemap chunks, fresh from archive.dat. (This is just the 04*05 and 05*05 chunks, not the entire level structure.)