The cover ilustrate a space freighter, mostly witch the story’s action goes around.
The design is focused on a 3D modeled ship with several functional areas like: the thruster engines, fuel tanks, structural tension beams, pressurized air hull and airlocks, cargo bay, antennas for communication and so on.

The ship being a freighter/cargo ship, it's slow and heavy with big hull & small engines, rather for floating than racing thru space.