You sight Wolf Trap Light in line with New...

Question 1 / 2066636eea28f7522a1c51b56f

Question 1 of 2066636eea28f7522a1c51b56f

You sight Wolf Trap Light in line with New Point Comfort Spit Light "2" bearing 040° per standard magnetic compass. You are on course 319° per standard magnetic compass. Based on this information which of the following is true?

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Question 1 of 20

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🔍 Key Concepts

• Relative bearings vs. compass course – how to interpret a light bearing taken on the standard magnetic compass when you already know your steered course on that same compass • Compass error (variation + deviation) – what information you need to actually compute a specific compass error, and what you can or cannot conclude from only one line of position (LOP) and your heading • Local magnetic disturbance vs. bad deviation table – when would an unexpected bearing suggest a temporary local disturbance versus an incorrect permanent deviation card

💭 Think About

• Compare the ship’s compass course (319° C) with the compass bearing (040° C) to the light: what does that tell you about how the compass is behaving, if anything, at that moment? • Ask yourself: with only a course and one bearing on the same standard magnetic compass, can you numerically determine the total compass error (variation + deviation)? What information is still missing? • Think about what would make you suspect a local magnetic disturbance or bad deviation card: what extra evidence would you normally want, beyond a single observed bearing and heading?

✅ Before You Answer

• Verify what data are required to actually calculate compass error (e.g. true bearing from chart, variation, and the observed compass bearing). Do you have all of them here? • Check whether any choice is assuming knowledge of the numerical value or sign of deviation or error that you cannot rigorously compute from the data given. • Confirm which answer choices are definite statements (“you know…”) versus those that only say you should suspect or consider something based on limited information.

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Question 1 of 20

you know the deviation table is incorrect

you know the compass error is 8°W

you should apply 3°Easterly deviation to the bearing

you should suspect the compass may be affected by a local magnetic disturbance

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Question 1 / 2066636eea28f7522a1c51b56f

Question 1 of 2066636eea28f7522a1c51b56f

Back

Question 1 of 20

66636eea28f7522a1c51b56f

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?

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