USCG Exam PracticeRunning fix from a single object
A running fix is considered less reliable than a simultaneous two-object fix primarily because it:
- A. Requires bearings to two separate charted objects
- ✓ Assumes course and speed were held exactly between the two observationsCorrect
- C. Produces a cocked hat rather than a single point position
- D. Does not account for the vessel's true course over ground
Why B is correct
The running fix is less reliable than a simultaneous fix because it assumes the course and speed were maintained exactly between the two observations. Any deviation in course or speed introduces error into the advanced LOP. (Bowditch Ch. 7 §708)
Cited:Bowditch Ch. 7 §708