Donald Trump went on a deranged rant about the power of water to destroy magnets during a rambling address to the U.S. Navy just off the coast of Japan.

Speaking aboard the USS George Washington aircraft carrier during his tour of East Asia, the president appeared to suggest—in a largely incoherent speech—that he is pushing for aircraft carriers to use “steam for the catapults” and hydraulics for elevators, while wrongly claiming that water can disable magnets.

archive link: https://archive.is/hk7Bw