A.When the towing vessel enters the fog
B.When the drilling rig enters the fog
C.When the towing vessel can no longer be seen from the rig
D.Immediately
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A.under tow
B.fixed to the seabed
C.underway
D.All of the above
A.destination
B.answer
C.time
D.ending
A.The motion of the apparent sun is along the ecliptic
B.Measurement of time is along the celestial equator
C.The speed of the Earth's revolution is not constant
D.There are variations in the Earth's rotational speed
A.Mine Safety Appliance Association
B.American Chemical Society
C.Marine Chemists Association
D.National Fire Protection Association
A.can be absorbed through the skin
B.causes irreversible damage to eye tissue
C.is a very unstable product
D.All of the above
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To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.
The light vessel is reported（）.
Mariners not entering the port are（）to keep at least one mile off.
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results（）.
The Coast Radio Stations are found in（）.
On an Atlantic Ocean voyage from New York to Durban，South Africa，you should expect the Agulhas Current to present a strong（）.