(Decided don't need a map for this)
http://s583.photobucket.com/us...r-ClassMedi.jpg.html
You are near the forward section of the ship, where most of the ship's operations are conducted. The forward 'saucer' section is where the ship's cockpit, crew quarters, rec area, and passenger space. This area contains the ship's secondary shields, backup hyperdrive, and secondary life support systems. It also contains a set of dorsal & ventral turrets.
You are currently in the much larger back area of the ship. The rear area is connected by a long, spine-like hallway that connects all the areas. It is quite a wide hallway, almost five meters across. The creases in the metal suggest that vehicles bring heavy comestables up along here a lot.
Near you are the large cargo containers. There are six in total, containing a total of about a hundred tons of capacity. Four are modular, able to be connected and disconnected if necessary.
Not far to the aft is the secondary cargo areas. These are not modular, being built into the ship. These are sometimes called the 'money spaces,' because it is here that the Spacemaster can carry specialized cargo. They can be pressurized & Vacuum sealed, or kept at subzero temperatures.
Further back, the ship has dorsal and ventral turrets. These are adjacent to the three engineering areas. The central one is for the reactor, primary shield generators, and primary life support. The starboard one is for engines and weapons. The port one is for hyperdrive, repulsors, and gravity systems.