Where does this Code 0 come from?
It seems that this terminology was invented during the Whitbread 1998-99 to define a flying sail to be used upwind. There were already Codes 1, 2,3… to navigate from full to close reach. The term Code 0 was imposed to define this sail capable of sailing at tighter angles than any other flying sails.
During the last two decades, the evolution of materials and designs has made it possible to create very specialized sails for light winds. Read on.