USCG Exam PracticeDead reckoning — DR plot maintenance
Dead reckoning (DR) determines a vessel's position by which method?
- ✓ Applying course steered and distance run from a known starting pointCorrect
- B. Using buoys to confirm the vessel's charted position
- C. Taking simultaneous bearings on two or more fixed objects
- D. Plotting the vector sum of set and drift against the intended track
Why A is correct
Bowditch Ch. 1 §102 defines dead reckoning as the determination of position by applying course steered and distance run from a known starting point. It does not rely on external fixes or current vectors.
Cited:Bowditch Ch. 1 §102