Chart Navigation & Plotting · Set & Drift — Estimated Position
A current sets 090°T at 1.5 knots. Over 4 hours, where does the EP lie relative to the DR?
- A6.0 NM due east of the DR✓ Correct
- B6.0 NM due west of the DR
- C1.5 NM due east of the DR
- D4.0 NM due east of the DR
Explanation
Displacement = 1.5 kt × 4 h = 6.0 NM in the direction of set (090°T = due east). The EP is 6.0 NM due east of the DR.
Authority: Bowditch (Pub. No. 9), Estimated Position
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