Factionless

The structures/vessel has no Core (player or Alien) are considered as factionless. Some wreckage are pre-built in-game factionless structures. Anyone can claim a factionless structure by placing a core in it. Factionless structures cannot be damaged by weapon (PvP or PvE) but can be dismanteled by Remove & Repair Tool.

Find the list of pre-built faction-less structures here.