It sims highly unlikely that a wave of that height can occur in the Atlantic Ocean, especially if we take the fact that the biggest ever recorded wave in the Atlantic is 95 ft. The big waves in the Atlantic are created by strong winds, and there's still no recording of a wind so strong that will be able to lift the waves to that heights. The only way that a wave that big can occur is if there is an tsunami, but since the Atlantic floor is pretty calm in that department it sims highly unlikely.
