Positioning Ships are a special defensive emplacements reinforced by the nanomachine organisms hijacked from Femto.
Only 5 of these ships are encountered in the penultimate mission where they guard the reinforced Central Globe and the mutual destruction of these 5 ships are the objectives of the mission. They are accompanied by the reprogrammed nanomachine organism that gradually restore its health if it is not dealt with. Even if they are destroyed, they will be completely repaired in a short while and they must be destroyed in short time between one's destruction. Thankfully, allied units are available to be used.