A harpoon is a big mean anti-ship missile that can be launched from a B-52, a surface ship such as a guided missile destroyer or even a submerged submarine such as the 688 class attack boat. The Harpoon is designed to fly at wave-top altitude to avoid radar detection. The cool thing about this missile is that it is designed to strike the hull of the target ship just below the water line to cause maximum flooding and increasing the possibility of the target sinking or being disabled. The other possible attack profile of the Harpoon is to "pop-up" just before impact. The missile arches over and comes screaming down on the target from directly above. This is very handy when trying to disable an enemy aircraft carrier because it totally destroyes the flight deck. Other possible out comes are fires (very dangrous at sea) or even the penetration of the upper deck and detonation in the hangar or magazine.