ship-invulnerable Causes the ships listed in this sexpression to be invulnerable to weapons. Use with caution!!!! Takes 1 or more arguments... 1+: Name of ships to make invulnerable to weapons.
Used to make the given ship invulnerable. This can be quite noticeable, especially if the player or a capital ship attacks and no damage can be dealt. Many feel that ship_guardian is better for this purpose, as it will allow ships to take damage without being destroyed.