USCG Exam PracticeThree-bearing fix and cocked-hat triangle
The 'doubling-the-angle-on-the-bow' technique produces which navigational result?
- A. A fix from two simultaneous LOPs to the same object
- ✓ A running fix in which the distance run between the two bearings equals the distance to the object at the second bearingCorrect
- C. A fix in which the distance run between the two bearings equals the distance to the object at the first bearing
- D. A direct fix using radar range and visual bearing simultaneously
Why B is correct
Bowditch Ch. 7 §703 describes the doubling-the-angle technique: two relative bearings are taken to a single object, and the distance run between them equals the distance off the object at the time of the second bearing. This is a running fix, not a simultaneous fix.
Cited:Bowditch Ch. 7 §703