You sight North Dumpling Island Light in...

Question 1 / 2066636eea28f7522a1c51b55b

Question 1 of 2066636eea28f7522a1c51b55b

You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2'N, LONG 71°56.0'W) bearing 089° per standard magnetic compass. If your vessel was heading 297° per standard magnetic compass at the time, which of the following is TRUE?

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🔍 Key Concepts

• Compass error = difference between true bearing and compass bearing • Relationship among true, magnetic, and compass (T–M–C) using variation and deviation • A range (two charted objects in line) gives you a true bearing from the chart

💭 Think About

• Use the charted positions of North Dumpling Island Light and Latimer Reef Light to find the true bearing of the range line • Compare your true course (from the chart) with the standard magnetic compass heading and use the T–M–C relationships to determine compass error on that heading • Decide what that single checked heading tells you (and does NOT tell you) about the deviation table and about other bearings

✅ Before You Answer

• Confirm the local variation for the area from the chart before doing any conversion • Carefully keep track of west vs east when moving between true, magnetic, and compass (remember standard T–M–C memory aids) • Ask yourself: does a check on one heading prove anything about all bearings, or only about that specific heading?

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Question 1 of 20

The deviation equals the variation.

The compass error is 13°W for all bearings of 089°psc.

You should swing your vessel to check the deviation table.

The deviation table is correct for that heading.

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Question 1 / 2066636eea28f7522a1c51b55b

Question 1 of 2066636eea28f7522a1c51b55b

Back

Question 1 of 20

66636eea28f7522a1c51b55b

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