ratification by nine countries from the group: Argentina, Australia, Belgium, Brazil, Canada, Chile, China, Denmark, Finland, France, Germany (1958 convention only), Greece, India, Ireland, Italy, Japan (1958 convention only), Netherlands, Norway, Poland, Portugal, Spain (1958 convention only), Sweden, Soviet Union (1958 convention only), Turkey, United Kingdom, United States and Yugoslavia; ratification from at least five countries with over one million gross register tons of shipping; an aggregate tonnage by ratifying countries of more than fifteen million gross register tons.