A.PAN-PAN
B.MAYDAY
C.SOS
D.SECURITY
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D.PAN
最新試題
Which is NOT a distress signal?（）
The use of the danger signal（）.
What is the normal length of anchor cable used to anchor a vessel?（）
In radiotelephone communications，the prefix PAN-PAN indicates that（）.
The towing light is a(n)（）.
What is the（）of the turning circle in mavoeuvring?
Fog forms when the air（）.
What is required to launch a boat stowed in a crescent davit?（）
To develop maximum anchor holding power，the optimum angle between the anchor’s shank and the mooring lines is（）.
There is plenty of（）at this area.