From the back of the book:
USF INTELLIGENCE OFFICE CLASSIFIED DOCUMENT 7863.3D
This manual contains classified specifications of over 70 USF and foreign spacecraft. Unauthorized possession of this manual is strictly prohibited under Directive 143.C.
This manual describes a selection of the major space craft of the United Space Force (USF), Royal Spartan Armada, along with a range of Venetian, Borian, Ogron, and civilian ships.
All efforts have been made to ensure the accuracy of this material, with reference to classified intelligence gathered by USF operatives.