USCG Exam Practice · Three-bearing fix and cocked-hat triangle
A line of position (LOP) represents which of the following?
- AThe vessel's exact position at a given moment
- BA line along which the vessel is known to lie at a given moment based on a single observation✓ correct
- CThe intersection of two or more simultaneous observations
- DA DR track advanced to the time of a second observation
Why B is correct
An LOP is a line along which the vessel is known to lie based on a single observation; it does not by itself establish an exact position. A fix requires the intersection of two or more LOPs taken simultaneously.
Cited:Bowditch Ch. 7 §701
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