I have an issue where the ships I build keep breaking while I have them docked, even in safe areas when no enemies are around, and I frequently lose the building materials which I typically spend 1-2 hours acquiring per ship. I have completely lost probably 6-8 longships because of this. It seems to have to do with terrain collision, but even when I'm not touching any land this still occurs in shallow water, which makes it extremely difficult to dock anywhere near land or my base. I wonder if the way ships render/spawn in has to do with this, as I have seen them suddenly jump into the air and fall like when you build them.