The external coordinate system of a starship utilizes a three dimensional vertex and vector measuring scheme, with centimetres as the operative value.
The three axes are labeled X, Y and Z, with each ship configuration (docked, saucer module, and battle section) having it's own specific origin.
Structures and objects within a starship are identified by an internal coordinate system following the form "12-3456-000/000/000."
The first two digits refer to the deck number; the second group of four digits specifies the sector and compartment number.
These first two groups of numbers are generally used as room designation numbers within the spacecraft.
The final group of three-digit numbers refer to an XYZ coordinate within a compartment.
External Coordinate System