USCG Exam PracticeRunning fix from a single object
The 'doubling-the-angle' technique for obtaining a running fix from a single object states that the distance run between the first and second bearings equals:
- A. The distance to the object at the time of the first bearing
- ✓ The distance to the object at the time of the second bearingCorrect
- C. Half the distance to the object at the second bearing
- D. The distance to the object at the midpoint between the two bearings
Why B is correct
Bowditch Ch. 7 §703 states that with the doubling-the-angle technique, the distance run between the two relative bearings equals the distance to the object at the second bearing — not the first or any intermediate point.
Cited:Bowditch Ch. 7 §703