Is it an Agriculture HUB? Hubs are not dockable, despite the fact that the UI says they will be. I've got a Scientific Hub on one of my moons that attacks me if I get inside the no fire zone. The funny thing is: I am 100% Allied with the faction that controls, but because it is "docking offline" they view me as an intruder. I messaged support about and they said it's working as intended, that hubs are not meant to be dockable. My personal frustration with Colonization is that there are errors in the UI, and they still haven't been corrected. I built a relay station, for instance, that is actually a comms station, because the Ichenae (sp?) template actually produces a comms station, even though it is listed under relay. That prevented me from being able to build the security station I wanted to build (had to go with Military Installation instead) and another similar issue kept me from being able to build a scientific installation. All in all, I was able to adapt my plan, and am pretty happy with my system development, but it could have been better if not for incorrect UI. They say they "cannot" change my "should have been a relay but it's actually a comms station" because it's impossible ...