Sidhe's right. The lead is already displacing water while it's in the boat.
OK: a man is sentenced to death, but assures the judge that he is innocent, he claims that he can plunge his hands into boiling water for at least a minute without getting any serious injury, since he is blessed by the Gods; the judge impressed by his piety agrees, how does the man suffer no serious injury, and keep his hands in the water for a full minute?