I don't know jack about designing armor, but it seems to me that the problems of supersonic missiles and collisions with massive objects present different chall

I don't know jack about designing armor, but it seems to me that the problems of supersonic missiles and collisions with massive objects present different challenges. Perhaps it's similar to the way that football pads don't stop bullets and yet bulletproof kevlar vests don't protect you from 300-pound football players? Regardless, I know that the Arleigh Burke class has a number of antimissile countermeasures. But the bottom line is: I really don't know of any vehicle (air, surface, underwater, ground, space, whatever) designed to survive supersonic missiles. I mean, even massive WWII-era battleships were helpless against smaller munitions like 500-pound bombs dropped from planes. Air superiority: either you have it, or your ships are screwed.