🔍 Key Concepts

• Three-bearing fix to determine an 0841 position on the chart • Plotting a running fix/course made good between the 0811 DR position and the 0841 fix • Using distance run and time elapsed to find course made good (not intended course)

💭 Think About

• From your 0811 position, where would each of these three lights lie relative to you when you plot the bearings as LOPs (lines of position)? • Once you have your 0841 fix, what straight line connects your 0811 position to your 0841 position, and how do you find its true direction? • How does the elapsed time between 0811 and 0841 help you check whether the course line you drew is reasonable with your assumed speed made good?

✅ Before You Answer

• Be sure the bearings are treated as true bearings from your vessel to the aids, then converted to lines of position on the chart (reciprocal as needed). • Confirm you are asked for course made good from 0811 to 0841, not the heading at 0841 or the bearing of any light. • After drawing the line from the 0811 position to the 0841 fix, carefully measure its true course with your plotter and compare it to the four choices, noting which option best matches your measured angle.