The dark depths of Lake Patricia in Canada still hide a secret that was once poised to change the course of World War II.
To gain the upper hand against the deadly German U-boats, the British had come up with a strange idea: make aircraft carriers out of giant icebergs. They were, after all, abundant, completely free and believed to be unsinkable. Crazy as it sounded, the project was approved by British prime minister Winston Churchill himself.
A prototype was built and tested at the lake over four months — and parts of it remain there, 50 feet below the surface. The ice has long melted, but Project Habbakuk still lives.
In 1942, at a branch of the British War Office, an…