航行一直很顺利，直到他们碰上了商船的尾流。The ride was smooth until they got into the merchant ship's wake.海军的人员是从商船的人员中征募的 吗 ?Were men for the Navy recruited from men on merchant ships?散逸的水雷开始在太平洋海岸出现而危及商船的航行.Stray mines began to turn ...