USCG Exam PracticeDead reckoning — DR plot maintenance
Dead reckoning (DR) position is determined by which method?
- A. Taking simultaneous bearings on two or more fixed objects
- B. Plotting the vector sum of set and drift from the last fix
- C. Averaging GPS positions over a timed interval
- ✓ Applying course steered and distance run from a known starting pointCorrect
Why D is correct
Dead reckoning is the determination of position by applying course steered and distance run from a known starting point. It does not account for current, leeway, or other external forces. (Bowditch Ch. 1 §102)
Cited:Bowditch Ch. 1 §102