A giant aircraft carrier built from ice
A giant aircraft carrier built from ice
Britain was losing the Battle of the Atlantic, with German U-boats sinking ship after ship. Enter Project Habakkuk, the incredible plan to build an aircraft carrier from ice.
Project Habakkuk: Britain’s Secret Ship Made of Ice
During World War II, British scientist Geoffrey Pyke proposed building a massive aircraft carrier out of ice to solve the steel shortage and protect ships from German U-boats in the Atlantic. The plan, named Project Habakkuk, aimed to create a 2,000-foot-long ice ship reinforced with sawdust, forming a super-strong material called pykrete. A prototype was built on Patricia Lake in Canada and successfully withstood summer temperatures with built-in refrigeration. The ship’s design included massive insulation, 40-foot-thick hulls, and space for 150 aircraft.
However, construction costs soared, wood shortages hit, and its slow speed made it impractical. The entire project was canceled before completion. Today, the remains of the prototype lie submerged in Patricia Lake, a frozen reminder of one of the war’s most bizarre but brilliant engineering ideas.

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