Problems with 6 5 metre an Ton classes 1900 Salut Ned Please have a look to fr Jauge Godinet about Ton classes in Olympics 1900 and fr 6 5 m SI for 6 5 Metre which is not according to International Metre Rule but to a french rule Jauge chemin de fer Railway Rule which became international rule but not Metre Rule just before Olympic games 1920 I hope you can use references of WP Fr articles