Well, I'd have marked it closer to the fourties...
Anyway, yes, I'm designing a super G-ship.
It's more like a Death Star though. Despite it having the power to wipe the Heartless off the face of a planet, it also has fairly high odds of wiping out all life on said planet. Attacking it is also very stupid, given the fact that all inertia based weapons would be totaly inneffective against it, due to gravitic shielding. And the fact that the point defense is comprised of dozens of Ark-Lasers.
Your best bet would be... Well, I'm not going to give it away.