单项选择题

A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n)（）.

A.dead reckoning position
B.estimated position
C.fix
D.None of the above

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单项选择题

A position obtained by crossing lines of position taken at different times and advanced to a common time is a(n)（）.

A.running fix
B.dead-reckoning position
C.fix
D.estimated position

单项选择题

A position obtained by applying only your vessel’s course and speed to a known position is a （）.

A.dead-reckoning position
B.fix
C.probable position
D.running fix

单项选择题

A line of position is（）.

A.a line connecting two charted objects
B.a line on some point of which the vessel may be presumed to be located
C.the position of your vessel
D.not used in a running fix