This isn't even a big tribe issue, can be anyone to do so. Had the same issue with land claim not long ago...the guy destroyed my water network I had set-up for the entire island on the peninsula, locked himself in a 1x1, took most of my shit and i'm pissed, because I wasn't there for the past 5 hours >_> pretty sure It is supposed to be 3 days right? They really need to fi this shit. Oh on another note, currently sinking his shit. retribution comes in many forms asshole.
Edit: Finally sunk this bastards ship, but no way to reclaim base now even if it says -2000+ seconds...…..also trying to find something that will agro on him and damage his walls etc. We really shouldn't be having to resort to these methods on PvE servers...….so the devs need to sort this out really quickly before it kills a huge part of the community. That and possibly region locking the Chinese out would be great addition.