You are steaming on a course of 071° T at 19...

Question 1 / 2066636eea28f7522a1c51b625

Question 1 of 2066636eea28f7522a1c51b625

You are steaming on a course of 071° T at 19 knots. At 1907 you observe a lighthouse bearing 122° T. At 1915 the lighthouse bears 154° T. What is your distance off at the second bearing

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Question 1 of 20

66636eea28f7522a1c51b625

You are steaming on a course of 071° T at 19 knots. At 1907 you observe a lighthouse bearing 122° T. At 1915 the lighthouse bears 154° T. What is your distance off at the second bearing

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🔍 Key Concepts

• Relative motion of your track versus lighthouse bearings over time • Using the 8-minute run at 19 knots to find distance run between bearings • The 90° bearing change method for finding distance off on the later bearing

💭 Think About

• Sketch your course line and plot the lighthouse bearings at 1907 and 1915—how does the large change in bearing help you? • Convert the time between bearings into distance traveled at 19 knots—how far did you go in those 8 minutes? • Think about the relationship between the distance run and the angle between the two bearings—what simple right‑triangle appears when the bearing change is close to 90°?

✅ Before You Answer

• Be sure you use true bearings and keep them referenced correctly to your ship’s course of 071° T • Carefully convert 19 knots and 8 minutes into nautical miles (use the speed–distance–time formula) • Check whether the bearing change plus the angle between your course and one of the bearings forms (or nearly forms) a right angle, and use that to relate distance off to distance run

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Question 1 of 20

You are steaming on a course of 071° T at 19 knots. At 1907 you observe a lighthouse bearing 122° T. At 1915 the lighthouse bears 154° T. What is your distance off at the second bearing

3.4 miles

3.7 miles

4.0 miles

4.3 miles

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Question 1 / 2066636eea28f7522a1c51b625

Question 1 of 2066636eea28f7522a1c51b625

You are steaming on a course of 071° T at 19 knots. At 1907 you observe a lighthouse bearing 122° T. At 1915 the lighthouse bears 154° T. What is your distance off at the second bearing

Back

Question 1 of 20

66636eea28f7522a1c51b625

You are steaming on a course of 071° T at 19 knots. At 1907 you observe a lighthouse bearing 122° T. At 1915 the lighthouse bears 154° T. What is your distance off at the second bearing

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed