USCG Exam PracticeRunning fix from a single object
At what minimum intervals must a new DR position be plotted when underway, according to standard DR practice?
- A. At every course change, every speed change, and at least once per watch
- ✓ At every course change, every speed change, at each fix, and at least once per hourCorrect
- C. At each fix and at least once per hour, but only when in pilot waters
- D. At every course change and at least once per hour, but not required at speed changes
Why B is correct
Bowditch Ch. 8 §801 specifies that a new DR position is plotted at every course change, every speed change, at the time of each fix, and at least once each hour — more often in pilot waters.
Cited:Bowditch Ch. 8 §801