register tonnageglossary / REGISTER TONNAGE register tonnage. The volume of a vessel available for commercial use, officially measured and entered in a record for purposes of taxation. — Also termed registered tonnage. 词条贡献者 资深译员Jenny,毕业于欧洲顶尖的高级翻译学院,擅长翻译涉及体育和运动场馆领域的法律文件。