[Dingocat85]

Originally posted by Drax:
I want to do this for a unique 'tech ruins' weapon. The mod I am making is going to have quite a few ruin techs. One of them is going to be a massive energy weapon, and I want it to only be mountable on a single ship hull (guess what, you get the ship hull from a ruin).

I am still doing facilities and tech areas at the moment, I will look at this in detail when I come to it. I suppose I could use the first method I proposed, I just dont want to have such a big hull in the game. Can you set a resource cost of a ships hull?

Of course, I could try Phoenix-D's idea. I'll see how it works later. Thanks everyone

If you want that hull to only be used to mount that massive weapon, I'm pretty sure you could have some sort of restriction like 'At least 1% of space must be used for Massive Energy Weapon'.

Something else that might work:
(Maybe this only works with ship/life support/crew quarters components...) You know how every unmodded ship has the requirement 'Must have 1 bridge'? It just might be possible to give every hull but the one you find in the ruins, a 'Must have 0 Massive Energy Weapon' requirement.
Since a Ship without the weapon has 0 Massive Energy Weapons, that requirement won't even show up, unless you try to load the M.E.W. onto it

If neither of those ideas work (and since I've never even modded, I doubt they will ), you could mess around with the Mount idea by giving it a creative description. Something like:
'Forgotten Mount'
Scientists believe that if the legendary weapons of the Ancients were to ever be rediscovered, they would only function if equipped onto this mount. However, only the legendary [insert name of ship] hull could support such weapons.