USCG Exam PracticeTides and currents — predictions and corrections
A vessel is steering 045°T at 10 knots. A tidal current is setting 180°T at 2 knots. Using the current vector triangle, which statement correctly describes the relationship between course steered, drift vector, and course made good?
- A. Course steered minus course made good equals drift vector
- ✓ Course steered plus drift vector equals course made goodCorrect
- C. Course made good plus drift vector equals course steered
- D. Drift vector minus course steered equals course made good
Why B is correct
Bowditch Ch. 24 §2402 defines the vector triangle as: course steered plus drift vector equals course made good. The other options invert or incorrectly subtract the vectors.
Cited:Bowditch Ch. 24 §2402