Navigation General · Set & Drift
A current has a set of 225°T and a drift of 2 knots. Over 3 hours, how far and in what direction will this current displace a vessel from its DR position?
- A6 nm in the direction 225°T✓ Correct
- B6 nm in the direction 045°T
- C3 nm in the direction 225°T
- D9 nm in the direction 225°T
Explanation
Current displacement = drift × time = 2 × 3 = 6 nm. Set is the direction the current flows toward, so the vessel is displaced 6 nm in the direction 225°T (southwest).
Authority: Bowditch (Pub. 9), Ch. 7
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