USCG Exam PracticeDanger bearings and danger circles
A navigator is piloting in restricted visibility with only one charted object visible. She takes a bearing of 045°T to the object, runs a timed distance on a steady course, then takes a second bearing of 090°T to the same object. She advances the first LOP along the DR track and intersects it with the second bearing. This technique is best described as a:
- A. Danger bearing using an NMT label
- B. Three-bearing fix producing a cocked hat
- ✓ Running fix from a single objectCorrect
- D. Simultaneous two-object fix
Why C is correct
Bowditch Ch. 7 §708 describes exactly this procedure — bearing, timed run, second bearing, advance the first LOP — as a running fix from a single object. It is less reliable than a simultaneous fix because it assumes course and speed were held exactly between observations.
Cited:Bowditch Ch. 7 §708