International One Design

An IOD racer on Hamilton Harbour, Bermuda, in 2006.
Development
DesignerBjarne Aas
Year1936
Boat
Draft1.6 m (5.4 ft)
Hull
LOA10 m (33 ft)
LWL6.6 m (21.5 ft)
Beam2.1 m (6.9 ft)
Rig
Former class of World Sailing

The International One Design (IOD, International) is a class of sail boat developed in 1936 for yacht racing. It is a 33-foot open-cockpit day sailer used for day racing, rather than for overnight or ocean races. Popularised prior to the Second World War, the International One Design class is considered a classic one today.