The track line on the chart is 274°T....

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Question 1 of 2066636ee928f7522a1c51a336

The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course would be steered by gyrocompass to make good the desired course?

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Question 1 of 20

66636ee928f7522a1c51a336

The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course would be steered by gyrocompass to make good the desired course?

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🔍 Key Concepts

• Relationship between True, Magnetic, Compass (T–V–M–D–C) when variation and deviation are east versus west • How gyro error is defined: "error east, gyro least; error west, gyro best" (compare true and gyro headings) • The difference between a per gyro compass (pgc) course and a per magnetic compass (pmc) course

💭 Think About

• Start from the desired true course 274°T and first convert it step‑by‑step through variation and deviation to see what the equivalent compass course would be. • Decide how east variation and east deviation affect the conversion: do you add them or subtract them as you go from true to compass? • Once you know the true course and the gyro error 1.5°E, ask: is the actual gyro reading higher or lower than true? Then adjust your computed value to find what must be steered on the gyro to make good 274°T.

✅ Before You Answer

• Be sure you apply variation and deviation in the correct sequence: True → Magnetic → Compass (and with the correct signs). • Confirm you are using the gyro error correctly: with error east, gyro reads less than true; with error west, gyro reads more than true. • Double‑check that your final value is labeled correctly as °pgc and that any intermediate magnetic or standard compass values are not mistaken for the final answer.

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Question 1 of 2066636ee928f7522a1c51a336

The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course would be steered by gyrocompass to make good the desired course?

Back

Question 1 of 20

66636ee928f7522a1c51a336

The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course would be steered by gyrocompass to make good the desired course?

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