The International DN is a class of ice boat. The name stans for Detroit News, which, in 1936, sponsored a competition for the best ice boat design. The winner of that competition saw their plans realized by a team of boatbuilders who transformed some excess warehouse and workshop space into a production facility where 50 of the boats were built. This design, featuring a narrow, single-person cockpit, three steel blades in tricycle style arrangement and a steeply raked mast, remains to this day the most popular ice boat design in use.