From your 0740 position, you change course to pass 1.1 miles north of Falkner Island Light. A northerly wind is causing a 2° leeway. What gyro course should you steer in order to ensure that you will remain clear of the 18' shoal located 1 mile NW of Falkner Island Light?
• Leeway correction: how a northerly wind affects your actual track when steering an easterly course • Plotting a safe clearing bearing/track to pass north of Falkner Island Light while staying south/east of the 18' shoal 1 mile NW • Difference between course to make good (CMG) and course to steer (CTS) when leeway is present
• On your chart, draw the line that gives you a 1.1‑mile closest point of approach (CPA) north of Falkner Island Light. What is the true course of that line? • With a wind from the north, will your vessel tend to drift to the south or to the north? Should your steered gyro course be into or away from the wind to compensate for leeway? • After applying leeway to your course to steer, which of the answer choices is close enough to the corrected gyro course while maintaining safe clearance from the 18' shoal NW of the light?
• Be sure your CPA line is at least 1.1 miles north of Falkner Island Light and well clear of the 18' shoal 1 mile NW • Apply the 2° leeway on the downwind side of your intended track, not the upwind side • Convert any true course you find to gyro course correctly, using the given gyro error (if provided in the larger problem set) before matching it to the choices
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