As you transit the Chesapeake Bay Bridge and...

Question 1 / 2066636eea28f7522a1c51b6bf

Question 1 of 2066636eea28f7522a1c51b6bf

As you transit the Chesapeake Bay Bridge and Tunnel, you take a gyro bearing of trestle C when it is in line. The gyro bearing was 050°. At that time, the helmsman noted that he was heading 139°pgc and 146° per standard magnetic compass. What is the deviation?

Back

Question 1 of 20

66636eea28f7522a1c51b6bf

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• Gyro error vs compass deviation • Relationship between gyro compass, per standard magnetic compass, and true/gyro bearings • Sign convention: when is deviation labeled East vs West

💭 Think About

• Compare the gyro bearing of the trestle with what the heading should be when the trestle is exactly in line. What does that tell you about gyro error? • Once you know the gyro error, convert between per gyro compass (pgc) and per standard magnetic compass (psc). Which way do you move to go from gyro to magnetic? • From the difference between magnetic and compass (psc) headings, decide if the compass is deflected East or West.

✅ Before You Answer

• Be clear on which value is pgc (per gyro compass) and which is psc (per standard magnetic compass). • Make sure you keep the sequence straight: True ↔ Gyro ↔ Magnetic ↔ Compass (psc) and apply corrections in the right order. • Double-check your East/West deviation sign: remember the common memory aid (e.g., "East is least, West is best" for converting between True and Compass).

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

Quick actions

— No credit card needed

Question 1 of 20

2°E

4°W

0°

2°W

Loading interactive features...

Question 1 / 2066636eea28f7522a1c51b6bf

Question 1 of 2066636eea28f7522a1c51b6bf

Back

Question 1 of 20

66636eea28f7522a1c51b6bf

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