where is the center ?

The GWX 3.0 is A modded version of VonDos's modded version,
of VonHelshing's Averof.

VonDos got permission from VonHelshing to mod it.
We got permission from both to include it in GWX 3.0

I then added the Historic Ship's Plaque at the aft end,
along with the Custom Guns I built.

I'll check for a wild Vert that may be affecting the bounding box.

Ref, Anvart, BigBoyWooly, Sergbuto, and others I'm not aware of
could tell you more about those settings in the cfg file.

I never work that area myself.