From your 2045 position, you set a course to...

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Question 1 of 2066636eea28f7522a1c51ac80

From your 2045 position, you set a course to pass 1.5 miles due east of the charted position of Hog Island Lighted Bell Buoy "12". The known set and drift in the area are 068°T at 3 knots. What is the course to steer, with no change in engine speed, to make good your desired course?

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Question 1 of 20

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🔍 Key Concepts

• Set and drift: how current affects your course and speed over ground • The relationship between course to steer (CTS), course made good (CMG), and current • Using a current triangle / vector triangle to solve for the required heading

💭 Think About

• Sketch a current triangle: start with your desired track (due east of the buoy) and then add the current vector. Ask yourself: do you need to steer more into or away from the current to stay on that line? • Compare the direction of the current (068°T) to a generally southerly course. Is the current setting you more toward the east, west, north, or south relative to your desired track? • Think about whether the final course to steer should be higher or lower than the desired track to compensate for the current’s push.

✅ Before You Answer

• Confirm that your desired track line is correctly drawn relative to the buoy (1.5 miles due east) before you add current. • Make sure your current vector (068°T at 3 knots) is drawn from the end of your ship’s through-the-water vector, not from the origin of the track. • Double-check whether your solution’s course to steer logically points somewhat into the current (up-current) rather than letting the current push you off your intended line.

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