At 0705, you take the following bearings:
Watch Hill Light 034.5°pgc Latimer Reef Light 338.0°pgc Race Rock Light 268.0°pgc
What was the true course made good between 0645 and 0705?
• Use the three simultaneous position lines (LOPs) from the 0705 bearings to obtain a fix • Determine the track line from your 0645 position (fix or DR) to the 0705 fix to find course made good (CMG) • Understand how to convert from pgc (per gyro compass) to true using gyro error/variation if provided on the exam sheet
• From the bearings at 0705, how do you plot and find your exact position on the chart? • Once you have your 0645 position and your 0705 fix, what line do you draw between them, and how do you read its direction as a course? • After you get the course from the chart, what corrections (if any) must you apply to change it from pgc/compass to true?
• Be sure your 0705 LOPs are plotted correctly and intersect cleanly for a reliable fix • Confirm you are using the correct 0645 starting position (fix vs DR) as stated on the full exam problem sheet • Double‑check whether any gyro error / variation is given elsewhere in the problem and apply it correctly before choosing a true course answer
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