USCG Exam PracticePlot true course and distance between two charted points
A navigator takes a bearing on a lighthouse, then runs a known course and speed for 20 minutes and takes a second bearing on the same lighthouse. The navigator advances the first LOP to the time of the second bearing and marks the intersection. This position is called a:
- A. Fix
- B. Dead reckoning position
- ✓ Running fixCorrect
- D. Estimated position
Why C is correct
Bowditch Ch. 7 §702 defines a running fix as a fix obtained when LOPs cannot be taken simultaneously; the first LOP is advanced along the DR track to the time of the second observation and the intersection is the running fix.
Cited:Bowditch Ch. 7 §702