大副的用法和樣例：
例句
-
大副正在學習準備當船長。
The first mate was studying to become a master. -
他30歲時受雇於一艘貨船當了大副。
At thirty, he signed on as first mate with a cargo ship. -
船上的全體船員都是強壯能幹的人，大副二副們都是第一流的有經驗的海員。
The crew was made up of strong and able men and the mates were experienced seamen of the first class. -
大副召集船上全體人員點名。
The mate mustered the ship's company.
