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 资深译员Paloma,毕业于亚洲一流的翻译学院,擅长翻译各类与境外投资相关的法律文件。