Available information indicates that there...

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Question 1 of 2066636eea28f7522a1c51aee2

Available information indicates that there is a set and drift in this area of 290°T at 2 knots. Allowing for this set and drift, what course must you steer to make good a true course of 150°, while maintaining an engine speed of 13 knots, from your 1930 position?

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Question 1 of 20

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🔍 Key Concepts

• Set and drift as a current vector affecting your intended track • Constructing a current triangle (or vector triangle) with true course, speed through the water, and set/drift • Using SOA (speed over ground) and STW (speed through water) to find the correct heading

💭 Think About

• Sketch the true course you want to make good and then add the set and drift vector. Which way does the current push you relative to your desired track? • Compare the magnitude of the current (2 knots) to your speed through the water (13 knots). Will your heading need to be to the left or right of 150°T? • Think about the current direction: 290°T is the direction toward which the current flows. What is the reciprocal, and how does that relate to the direction you must steer?

✅ Before You Answer

• Be clear whether 290°T is the direction the current is going (set) or coming from. • Confirm that you are using speed through the water = 13 knots and current speed = 2 knots in your vector triangle, not just averaging the numbers. • After you find the required heading, check if your answer is logically offset the correct way (upstream of the set) and by a reasonable number of degrees for a 2-knot current against 13 knots of ship’s speed.

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