USCG Exam PracticeVisual piloting — three-bearing fixes, danger bearings
The 'doubling-the-angle' technique is used to determine which navigational quantity?
- A. The vessel's set and drift over a tidal cycle
- ✓ The distance to a charted object at the time of the second bearingCorrect
- C. The compass error by comparing two simultaneous bearings
- D. The vessel's speed made good between two fixes
Why B is correct
Bowditch Ch. 7 §703 states that when using the doubling-the-angle technique, the distance run between the first and second relative bearings equals the distance to the object at the time of the second bearing.
Cited:Bowditch Ch. 7 §703