🔍 Key Concepts

• Using your plotted 0800 position to draw a course line into the authorized channel shown on the chart or exam plotting sheet • Aligning your course so it passes between Trestle “A” and Trestle “B” without cutting the edges of the channel or safety limits • Converting the true course you measure on the chart to pgc (per gyro compass), applying variation and gyro error as given in the problem setup

💭 Think About

• From your 0800 position, which exact line on the chart represents the centerline of the authorized channel leading through the gap between the trestles? Draw that line first, then read its direction • After you measure the true course on the chart, what corrections (variation, deviation or gyro error) does the exam problem tell you to apply to get from true to pgc? Step through those conversions carefully • When your line is drawn from your 0800 fix through the opening, does it keep you inside all marked limits of the authorized channel the entire way, without grazing any boundaries?

✅ Before You Answer

• Confirm that you are starting from the correct 0800 plotted position—double‑check the latitude/longitude or fix used • Verify you have measured the course along the channel centerline, not from some intermediate point or from one trestle only • Carefully apply the given correction from True to pgc (include the correct sign for variation and gyro error) before matching your result to the multiple‑choice options