You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What speed will you make good along the track line?

Correct Answer: Option C — 13.0 knots

Vector addition using the Law of Cosines or a maneuvering board determines the Speed Made Good (SMG). By resolving the engine speed vector and current vector, the resultant ground track speed is 13.0 knots. This follows standard vector analysis principles found in Bowditch, Chapter 10, for solving current-sailing problems.