Which would influence a magnetic compass?

Question 1 of 20

Q

Which would influence a magnetic compass?

A

Radio

B

Iron pipe

C

Electrical wiring

D

All of the above

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Question 1 / 205eccef9fbacbc34ba4d46866

Question 1 of 205eccef9fbacbc34ba4d46866

Which would influence a magnetic compass?

Question 1 of 20

5eccef9fbacbc34ba4d46866

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Questions

Q

Which would influence a magnetic compass?

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🔍 Key Concepts

• Magnetic compass deviation and what causes it • Difference between magnetic fields created by metal objects vs. electrical equipment • How different shipboard systems can create local magnetic interference

💭 Think About

• Think about which items on the list can create or disturb a magnetic field near the compass. • Consider why we keep magnetic compasses away from certain materials and installations on a vessel. • Ask yourself: on a real ship, what things would the compass adjuster be most concerned about when locating and swinging the compass?

✅ Before You Answer

• Identify which options can create or alter a magnetic field near the compass. • Recall that both ferrous metals (like iron or steel) and electric currents can affect compass readings. • Before choosing, ask: if this item were close to the compass, would it be a concern during a compass adjustment?

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Which would influence a magnetic compass?