> aircraft carriers made out of ice Pykrete, really - a combination of wood and ice. And the idea had merit - see http://en.wikipedia.org/wiki/Project_Habakkuk

> aircraft carriers made out of ice Pykrete, really - a combination of wood and ice. And the idea had merit - see http://en.wikipedia.org/wiki/Project_Habakkuk http://en.wikipedia.org/wiki/Project_Habakkuk for lots of interesting details.