单项选择题
The control of distress traffic is the responsibility of（）.
A.the owners B.the charterers C.the shipper D.the vessel in distress or of the station that relays the distress message
单项选择题 What is meant by veering the anchor chain? （）
单项选择题 What does the abbreviation VHF stand for?（）
单项选择题 Vessels wishing to communicate with the Port Health Officer should do（）on VHF Channel 14.
