🔍 Key Concepts

• Relative bearing abeam (90° from your track line) • Using speed = distance ÷ time to estimate when you reach a certain point • Plotting a new course from a known position to find when you will pass abeam of a fixed aid to navigation

💭 Think About

• On the course 206°T from your 2000 position, where on the chart will you be when Hog Island Buoy "12" is exactly abeam (at right angles) to your track? • Once you identify that abeam point on the track line, how can you measure the distance from your 2000 position to that point? • Given your vessel’s speed (from the problem/chart), how long will it take to travel that distance, and what clock time does that correspond to starting from 2000?

✅ Before You Answer

• Confirm the abeam point by checking that the line from your track to the buoy is 90° to your course of 206°T • Make sure you are using the correct speed given in the exam problem/chart (knots = nautical miles per hour) • Double-check that you convert distance-to-time correctly: ( \text{Time (hours)} = \frac{\text{Distance (NM)}}{\text{Speed (knots)}} ), then convert to minutes after 2000