https://affectedarc07.github.io/SS13WebMap/

This is list of interactive Space Station 13 web maps. Contains, included but not limited to: all of the station, support of multiple Z-layers (vertical layers, "floors"), coordinate grid (X and Y coordinates), pipenet (network of atmosphere pipes, wires, and sometimes trash chute pipes), starting places of items and constructions, and much more.

Great for both speedrunning and casual play. Especially good in situations what require coordinate precision (finding a GPS beacon only using it's coordinates; using the handheld teleport; etc) or station construction understanding.