Navigation Problems USCG Question #503 (Set 14)

You are underway on course 000°Tat 9.5 knots. The current is 082°T at 1.1 knots. What is the speed being made good?

Official USCG Answer & Rule Citation

Correct Answer: Option A — 9.8 knots

The Speed Made Good is the resultant of the ship's 9.5-knot velocity and the 1.1-knot current set at 082°T. Using vector addition, the current provides a slight push along the track, resulting in a speed of 9.8 knots, consistent with Bowditch navigation principles.

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