So after adding the details to my main ship mesh, this happened:
Then I tried these details as goblins, I looked at the hgn_carrier to find out how it should work.
But they never show up in the game, I already tried to tweak the settings for them in the .ship file, no success.
HODOR takes much longer generating the scene data, so they are in the .hod.
They also show up in CFHodEd.