单项选择题
A head on situation shall be deemed to exist at night when a power-driven vessel sees another power-driven vessel ahead and （）.
A.one sidelight and the masthead light are visible
B.the vessels will pass closer than half a mile
C.both vessels sound one prolonged blast
D.both sidelights and masthead light(s) are visible
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相关考题
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单项选择题
The Sailing Directions contain information on （）.
A.required navigation lights
B.lifesaving equipment standards
C.casualty reporting procedures
D.currents in various locations -
单项选择题
You will find information about the duration of slack water in the （）.
A.Tidal Current Tables
B.Tide Tables
C.American Practical Navigator
D.Sailing Directions -
单项选择题
（）amplify charted detail and contain information needed for safe navigation.
A.Admiralty Sailing Directions
B.Admiralty List of Lights
C.Admiralty List of Signals
D.Admiralty Notices to Mariners
