USCG Exam PracticeRunning fix from a single object
When plotting a running fix from a single object, which assumption makes the result less reliable than a simultaneous two-object fix?
- A. The charted position of the object may contain error
- B. The cocked hat formed by the two LOPs may be large
- ✓ Course and speed were held exactly between the two observationsCorrect
- D. The danger bearing may have been crossed during the run
Why C is correct
Bowditch Ch. 7 §708 states the running fix is less reliable than a simultaneous two-object fix because it assumes the course and speed were held exactly between the two observations. Any deviation in course or speed introduces error into the advanced LOP.
Cited:Bowditch Ch. 7 §708