USCG Exam PracticeRunning fix from a single object
At 1000, you take a bearing of 045°T on a water tower and plot the LOP. You maintain C 090 at S 10 knots. At 1030, you take a second bearing of 010°T on the same water tower. To obtain a running fix, you advance the 1000 LOP by:
- A. 10 nautical miles in the direction 090°T.
- ✓ 5 nautical miles in the direction 090°T.Correct
- C. 5 nautical miles in the direction 045°T.
- D. 10 nautical miles in the direction 010°T.
Why B is correct
The vessel ran 30 minutes at 10 knots, covering 5 nautical miles on course 090°T. Per Bowditch Ch. 7 §708, the first LOP is advanced along the DR track — direction 090°T — by the distance run of 5 NM. The intersection of the advanced LOP with the 1030 bearing is the running fix.