单项选择题
A line connecting all possible positions of your vessel at any given time is a（）.
A.longitude line
B.latitude line
C.line of position
D.fix
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相关考题
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单项选择题
A large navigational buoy (LNB) is painted（）.
A.red
B.yellow
C.with red and white vertical stripes
D.with a distinct color and pattern unique to each buoy -
单项选择题
A fairly accurate estimation of a ship’s position can be calculated by a technique known as（）.
A.dead reckoning
B.Pilotage
C.great circle sailing
D.geographic navigation -
单项选择题
A dead reckoning (DR) plot（）.
A.must utilize magnetic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessel's position is fixed
