The Iceberg Aircraft Carrier

Faced with a shortage of aircraft carriers to fight German U-boats in the Atlantic, Winston Churchill championed this, one of the strangest ideas of WWII. Plan Habakkuk was as silly as its name suggests: the job was to construct an enormous man-made iceberg, put dozens of warplanes on it, then sail it into the Atlantic to do battle with Nazi subs. But the whole idea quickly sank for the most obvious reason: ice melts.