User blog comment:D.Ryan/Would Rapture be affected if....../@comment-1330314-20110718044129

If it detonated halfway down the ocean, Rapture would suffer moderate to light damage from the shockwave. Although it wouldn't suffer that much from the radiation, since most of it would be absorbed by the water and carried away by the currents, it would most likely suffer a total electrical blackout due to the bomb's EMP.