forward and backward at seaglossary / FORWARD AND BACKWARD AT SEA forward and backward at sea. Marine insurance. From port to port in the course of a voyage, and not merely from one terminus to the other and back. 词条贡献者 法律翻译郭敏,毕业于欧洲顶尖的高级翻译学院,擅长翻译涉及互动娱乐领域的法律文件。