15.8 Salt for Subs #2

Summary

The idea to build an aircraft carrier out of ice and sawdust was officially known as Project Habakkuk. It was the brainchild of a British inventor named Geoffrey Pyke in 1942, during the height of World War II when German U-boats were sinking Allied supply ships faster than they could be replaced.

15.8 Salt for Subs #2 started on 9/17/2026, 6:00 AM UTC and ends on 9/24/2026, 5:59 AM UTC (6 days).