Quote - Bad news: It doesn't work!
I got the .obj-version of that ship, but when I import it into my scene, I don't see anything. not only the ship is invisible, also anything else I have in the scene dissapeares!

Did you try adjusting the import scale?  Sometimes, imported objects can be physically very, very large compared to the tiny little objects Daz/Poser works with.  It's often necessary to adjust the scale.  Of course, there could be other problems as well if you couldn't get any response out of manipulators in the content window.