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Grace,毕业于一所培养最顶级翻译人才的语言学院,擅长翻译各类与商业诉讼及争议相关的法律文件。