Okay, the Heavy Freighter by itself with the various cargo pods attached. Using the Liberty ship concept from WWII, you could build a modular ship design and turn out hundreds of them in short order. Same concept here: Add a section and a drive unit to a light freighter and you have a medium class. Add two more primary sections and a fourth drive and you have a heavy class freighter. Of course it isn't quite that simple as you need more structural reinforcement, fuel storage, consumable storage, and berthing for a larger crew, etc. I may not churn out anything for a while. I'm taking down the Render machine, stripping it down to the frame, cutting more fan access holes for grills, adding more fans, adding a second drive (going to RAID 0 format), and redoing the lighting scheme from the original configuration located here: http://www.renderosity.com/mod/gallery/index.php?image_id=1413557&member T4V&C