At 0720, you are in the outer channel...

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Question 1 of 2066636eea28f7522a1c51a8ad

At 0720, you are in the outer channel between buoy "1" and buoy "2" and change course to pass Townshend Ledge Lighted Bell Buoy "10A" abeam to port at 0.1 miles. What is the course to steer per gyrocompass if a northerly wind causes 2° of leeway?

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Question 1 of 20

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🔍 Key Concepts

• Leeway and how wind from different directions pushes a vessel sideways relative to its intended track • How to determine the true course from the chart between your position in the outer channel and Townshend Ledge Lighted Bell Buoy "10A" • Converting from true course to gyrocompass course using the given gyro error (from the exam’s reference data)

💭 Think About

• First, on the chart, draw the track line from your position in the outer channel (between buoys "1" and "2") to a point where buoy "10A" will be abeam to port at 0.1 miles. What is the true course of that track? • Think about a northerly wind: does it push you toward the south or toward the north? Given your intended track direction, will the leeway make your actual heading drift to the left or to the right? Should you steer more to the left or more to the right to compensate? • Once you know the required true heading (after leeway correction), how do you apply the known gyro error to convert from true to gyrocompass heading?

✅ Before You Answer

• Be clear which side is port and which side is starboard when buoy "10A" is abeam — this tells you which side of the buoy your track is on. • Confirm the sign of leeway: are you adding or subtracting the 2° from the desired track, based on the direction the wind is pushing you? • Verify your final step: when going from true to gyro, are you correctly applying the gyro error from the exam’s data (east/west error changes the direction of the correction).

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