Project Habbakuk

Project Habbakuk was a plan by the British in World War II to construct an "unsinkable" aircraft carrier out of ice, for use against German U-boats in the mid-Atlantic, which was out of range of land-based planes.

References

• Perutz, M. F. (1948). A Description of the Iceberg Aircraft Carrier and the Bearing of the Mechanical Properties of Frozen Wood Pulp upon Some Problems of Glacier Flow. The Journal of Glaciology, 1 (3), 95–104