Most ships have facings that don’t quite line up properly all the way through their full 360° rotation cycle. It looks like the same problem I had when I was first sorting out my own rotation setup, where it was essentially rendering 119 unique frames and making the last a copy of the first, but that doesn’t seem to be the case on your setup. Regardless, something in your Blender rotation setup needs fixed.
It’s most noticeable on the cardinal directions. The attached image was generated using
TransData.exe /shipImages /rotation:270 /criteria:"s +extension:0xAc123099 to display the issue.