There are five hallways in Space Station Thirteen
The hallways in SS13 have been named using boat terms, in order to help you, an image has been re-constructed to assist in understanding.
The Fore Primary Hallway is north, the Starboard Primary Hallway is east, the Port Primary Hallway is west, and the Aft Primary hallway is south. The hallway that connects them all is the Central Primary Hallway.
The hallways have tons of fire locks, lots of rooms connecting them, but contain nothing more valuable than tools.
CREDIT FOR IMAGE:http://boatsafe.com/kids/terms.htm