So lets talk about this SM version 0.19320 and the changes it made to missile targeting... I have been testing lock on and heat seeker missiles. Turns out if you have all your system blocks tucked away from exterior armor with a minimum range of about 7-10 blocks you will suffer no damage to any structure hp or systems within the ship. You will lose shields and also armor hp but the targets of the missiles will remain the system blocks resulting in no damage being done to structure hp. Pretty cool. So go out there and build spaced armor ships quick and crush your enemies before this is fixed! (so long as they only use those two times of weapons) xD