USCG Exam PracticeDanger bearings and danger circles
Bowditch states that danger bearings and clearing lines are used to supplement the fix during visual piloting. What specific purpose do they serve between fixes?
- A. They replace the DR track when course and speed cannot be held exactly
- B. They advance the first LOP to the time of the second observation
- C. They reduce the size of the cocked hat formed by three simultaneous LOPs
- ✓ They keep the vessel off charted hazards in the intervals between position fixesCorrect
Why D is correct
Bowditch Ch. 7 §707 states explicitly that danger bearings and clearing lines supplement the fix to keep the vessel off charted hazards between fixes. They are not substitutes for the DR track, do not advance LOPs, and have no effect on the cocked hat.
Cited:Bowditch Ch. 7 §707