Back on topic.   

I don't think gv's IRL work "partially damaged".  
A broken track is a broken track.  
The instances of hits on turret rings I've seen disabled the gv, possibly disabling the crew as well.
The last time I threw a rod, I barely made it home. It was like flying with a fast oil leak.
I'll ask my 19kilo friend about "partial" damage.
wrongway