Sheltem landed on VARN 4 because it was the closest ship to him and yet he launched VARN6 into sun.
...I will be forced to land on VARN 4 of the CRON vechcle...
If VARN4 was the closest to him, it should be on top but if he launched VARN6, it suggest that ship was on top.
Also MM3 manual mention that Varns carried by Shikbath Zera were once a one land (read: stacked on one level) and they broken up only when they were landing on Terra.
Well, it's all speculations, no one seems to know how these vechicle look like.
BTW - anyone knows on which city look of Thojgard from MM9 was based? Lindisfarne is obvious, Guberland is based on Trelleborg Ring Fortress on Zealand but rest of Chedian cities?