internal components and missiles hp

[guss]

I cant find information on ship's internal components and missiles "hp" mechanics, how much MJ are needed to destroy them? is it worth to put laser engines on a pd boats?
thanks.

[Martenzo]

Yes. As I understand it, Lasers do not fire on projectiles that they can't destroy in one hit, to the point that as I move into the late game and need to start attacking enemy stations, I'm considering using the 120cm laser turrets as point defence instead of the 60cm (I have long since abandoned the fast-firing PD turrets as useless against alien missiles and railguns).