In 1942, Geoffrey Pyke convinced someone of how important a ship made of Ice could be for Canada in case someone declare war on them. It took one month to build and was 60 foot long and 1,000 tons. During the course of the summer though, it melted. But during the building, they discovered that water mixed with wood fibers and frozen was a strong solid mass much stronger than ice. This material, which was 14% wood and 86% ice, was later named Pykrete.