USCG Exam Practice · Running fix from a single object
Which statement correctly describes the accuracy of a running fix compared to a fix derived from simultaneous LOPs?
- AA running fix is more accurate because it uses two separate observations
- BBoth methods produce equivalent accuracy when the same object is used
- CA running fix is less accurate than a fix from simultaneous LOPs✓ correct
- DA running fix is more accurate when radar is used for the second observation
Why C is correct
Bowditch Ch. 7 §702 explicitly states that a running fix is less accurate than a fix from simultaneous LOPs, because the advanced LOP carries forward any errors in course, speed, and current assumptions made during the DR interval.
Cited:Bowditch Ch. 7 §702
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