You wish to make good a course of 053°T while turning for an engine speed of 16 knots. The set is 345°T, and the drift is 2.4 knots. What speed will you make good along the track line?

Correct Answer: Option B — 16.8 knots

Apply the vector triangle method where the resultant velocity is the sum of the engine velocity and current vector. Using the Law of Cosines with the angle between the track (053°T) and current (345°T), the speed made good along the track line is 16.8 knots.