At 0600 you take the following bearings:
Point Judith Light: 064°pgc Block Island North Light: 142°pgc
What is your 0600 position?
• Two-bearing fix using visual bearings to charted aids to navigation • Converting a per gyro compass (pgc) bearing to a true bearing if needed, based on the exam’s convention • Plotting lines of position (LOPs) from known objects to find the intersection (your position)
• On the chart, from each light, in which direction should you draw the line of position: toward the bearing or reciprocal of the bearing? Think about what the bearing represents. • After plotting both LOPs, how close together are the possible intersection points relative to the given answer choices’ lat/long values? • What small differences in latitude and longitude distinguish options A, B, C, and D, and which intersection point best matches your plotted fix?
• Verify you are using the correct charted positions for Point Judith Light and Block Island North Light. • Confirm whether exam bearings labeled pgc are to be treated as already corrected to true for plotting purposes (check your exam instructions). • After plotting, read off the latitude first, then longitude, and compare each carefully with all four choices, noting tenths of minutes.
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