At 0812, you obtain the following radar information: Cape Henry Light bearing 287° pgc at 3.85 nm What is your 0812 position?
• Using radar range and bearing to plot a line of position (LOP) from a known object (Cape Henry Light) • Understanding pgc bearing (per gyrocompass) and how it relates to plotting on the chart • Relating the plotted LOP and range circle to the approximate lat/long values shown in the answer choices
• How do you transfer a radar bearing and range from a known object onto your chart to find your ship’s position? • If Cape Henry Light is at a known charted position, where would a ship be located that sees it at 287° pgc at 3.85 nm? • Looking at the answer choices, which latitude and longitude would logically place you on that bearing line and at that distance from Cape Henry Light?
• Confirm the exact charted position of Cape Henry Light on the exam chart you’re using • Make sure you understand from which point the bearing is measured (from own ship to the light, or light to own ship) and how that appears on the chart • After plotting, verify that the distance from Cape Henry Light to your plotted position is 3.85 nm before comparing to the given coordinates
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