Current and proposed I.Y.R.U. rules compared. The "Mark: London '57" draft of proposed amendments to the International Yacht Racing Union racing rules, to be used on an experimental basis during the 1958 season by the Scandinavian Yachting Union and the Fédération Française du Yachting à Voile, and compared with the 1958 official I.Y.R.U. rules /
International Yacht Racing Union.
London, 
1958.