Your vessel is steering 354°T at 14 knots....

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Question 1 of 2066636eea28f7522a1c51b81f

Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?

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Question 1 of 20

66636eea28f7522a1c51b81f

Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?

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🔍 Key Concepts

• relative bearings and abeam (when is an object "abeam" of your vessel?) • Using speed = distance / time to convert time run into distance traveled along your track • How the change in bearing from your course line can be used to find distance off using simple trigonometry (e.g., right triangle relationships)

💭 Think About

• First, figure out how long you were steaming between the two bearings, and then convert that time at 14 knots into distance made good along your course. What is that distance? • Think about the geometry: your track is one side of a triangle, and the two bearings to the light form angles with your track. How can you use those angles to find the perpendicular distance from your track to the light? • When the light is directly abeam, the bearing will have a specific relation to your course. Use that fact plus the earlier geometry to determine the distance off at that abeam point.

✅ Before You Answer

• Confirm you converted time difference to hours correctly before multiplying by 14 knots. • Check that you are using the angular difference from your course, not just the raw bearings (i.e., course vs. 049°T and 071°T). • After computing, compare whether your distance off abeam is reasonable relative to the distance steamed between the two observed bearings.

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Question 1 of 2066636eea28f7522a1c51b81f

Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?

Back

Question 1 of 20

66636eea28f7522a1c51b81f

Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?

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

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