A long time ago, in a galaxy....mmmm.... right about here, two professional Traveller geeks came up with an adventure concept based around planet-based large anti-grav cargo carriers. If you think "Tales of the Golden Monkey" [link]
for Traveller, you're pretty much there.
Said geeks went off and got REAL jobs before they could bring their product to market, but the concept kicked around in the back of their mind for decades, until it came out....mmmm... right about here.
This is a basic kitbash to represent a G-freighter design. I used the Dystopian Transport [link]
and backed it into the VCX-350 body, by Skynet3020 [link]
, then seasoned to taste.
DAZ Studio & Photoshop