单项选择题 A vessel has been equipped with an oil lubricated stern bearing and is undergoing a routine dry-dock.Which of the following inspection should be made when the tail-shaft has been drawn?（）

单项选择题 Inspection of a vessel’s propeller during dry-dock should include （）

单项选择题 When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?（）