USCG Exam Practice · Plot true course and distance between two charted points
A navigator takes a bearing to a lighthouse and records it. Unable to take a second simultaneous bearing, the navigator advances the first LOP along the DR track and crosses it with a second bearing taken 20 minutes later. The resulting position is called a:
- AFix
- BEstimated position
- CRunning fix✓ correct
- DDead reckoning 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. It is less accurate than a fix from simultaneous LOPs.
Cited:Bowditch Ch. 7 §702
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