USCG Exam PracticeThree-bearing fix and cocked-hat triangle
A line of position (LOP) represents which of the following?
- A. The vessel's exact position at a given moment
- ✓ A line along which the vessel is known to lie at a given moment based on a single observationCorrect
- C. The intersection of two or more simultaneous observations
- D. A DR track advanced from a previous known position
Why B is correct
A single observation produces an LOP — a line on which the vessel lies — not a fix. A fix requires the intersection of two or more LOPs taken simultaneously. Bowditch Ch. 7 §701 states this definition explicitly.
Cited:Bowditch Ch. 7 §701