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 译员Terris,毕业于国内一流的高级翻译学院,擅长翻译有关文旅和酒店领域的法律文件。