USCG Exam PracticeDanger bearings and danger circles
According to Bowditch, the 'doubling-the-angle' technique uses two relative bearings to a fixed object. What does the distance run between the two bearings equal?
- A. The distance to the object at the first bearing
- ✓ The distance to the object at the second bearingCorrect
- C. Twice the distance to the object at the first bearing
- D. Half the distance to the object at the second bearing
Why B is correct
Bowditch Ch. 7 §703 states that in the doubling-the-angle technique, the distance run between the two relative bearings equals the distance to the object at the second bearing. This allows the navigator to determine the vessel's distance off without a direct range measurement.
Cited:Bowditch Ch. 7 §703