单项选择题
Where would you find the call sign or call letters of the radio station on your ship?（）
A.In the rig safety manual B.On the Certificate of Inspection C.On the Ship Station License D.On the rig Watch Bill
单项选择题 To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.
单项选择题 Three SHORT BLASTS mean（）.
单项选择题 The winch is liable（）worn-out in this way.
