A.the centerline of a navigable channel
B.the starboard side of a channel
C.a prominent object of navigational interest that has no lateral significance
D.an area of a channel where passing another vessel is permitted
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A.heavy rain within six hours
B.a decrease in wind velocity
C.a change in the present weather conditions
D.that fog will soon set in
A.Straight line
B.Arc
C.Parabola
D.Hyperbola
A.large GM
B.high center of gravity
C.excessive free surface
D.small GZ
A.In the lower level of the pumproom
B.In the middle level of the pumproom
C.In the upper level of the pumproom
D.On the deck outside the pumproom
A.atmospheric pressure
B.wind speed
C.relative humidity and dew point
D.wind chill factor
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Light Lists for coastal waters are（）.
An inflatable liferaft should be manually released from its cradle by（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.
The Coast Radio Stations are found in（）.
Mean high water is the average height of（）.
The information on ocean voyage planning with routeing details for powered and sailing vessels is likely found in（）.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
On an Atlantic Ocean voyage from New York to Durban，South Africa，you should expect the Agulhas Current to present a strong（）.