A vessel is making good a course of 090°T at 10 knots over the ground. A tidal current is setting 180°T at 2 knots. Using the current vector triangle, the course the vessel must steer to maintain a track of 090°T is best described as:

Question

Accepted Answer

D. A course north of 090°T to counteract the southerly set of the current — The vector relationship is: course steered plus drift vector equals course made good. A current setting 180°T (southward) will push the vessel south of the intended track; the vessel must steer north of 090°T to make good 090°T over the ground.

Answer

A. A course south of 090°T to counteract the southerly set of the current

Answer

B. 090°T, because the current is perpendicular and does not affect course made good

Answer

C. 090°T with a reduced speed to compensate for the current

A vessel is making good a course of 090°T at 10 knots over the ground. A tidal current is setting 180°T at 2 knots. Using the current vector triangle, the course the vessel must steer to maintain a track of 090°T is best described as:

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