单项选择题 After a seaman is discharged，at the end of the voyage，the final payment of wages due must be made at the earlier of within 24 hours after the cargo has been discharged or（）.

单项选择题 A seaman may not make an allotment to his（）.

单项选择题 A seaman is reported missing in the morning and was last seen after coming off the mid-watch. Which type of turn would you use to return to the trackline steamed during the night?（）