USCG Exam PracticeDanger bearings and danger circles
Bowditch describes the 'doubling-the-angle' technique for obtaining a running fix. Which of the following correctly states the relationship between the distance run and the distance off?
- A. The distance run between the two bearings equals twice the distance to the object at the second bearing
- ✓ The distance run between the two bearings equals the distance to the object at the second bearingCorrect
- C. The distance run between the two bearings equals the distance to the object at the first bearing
- D. The distance run between the two bearings equals 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 provides a direct distance-off at the time of the second bearing.
Cited:Bowditch Ch. 7 §703