The Quarter Ton Cup is a sailing trophy awarded to the winners of the world Quarter Ton class championships between 1968 and 1997 and for the Quarter Ton Classic Revival from 2005 to present.
The class fleet still sails on the Solent.
Under a different set of rules existing half ton boats were extensively modified to race under the IRC rating system but no longer as an international class with primary focus around the Solent in United Kingdom.