Question 1 of 20
Q
Which of the following compensates for errors introduced when a vessel heels over?
A
The Flinders bar
B
Magnets placed in trays inside the binnacle
C
A single vertical magnet beneath the compass
D
The soft iron spheres on the arms of the binnacle
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Question 1 / 2066636ee928f7522a1c5193da
Question 1 of 2066636ee928f7522a1c5193da

Which of the following compensates for errors introduced when a vessel heels over?

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66636ee928f7522a1c5193da
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Which of the following compensates for errors introduced when a vessel heels over?

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🔍 Key Concepts

• How heel (tilting to one side) affects the vertical component of the Earth's magnetic field acting on the compass • Which correctors are for permanent magnetism vs soft iron vs heeling errors • Location and orientation (horizontal vs vertical) of different compass correctors in the binnacle

💭 Think About

• Identify which type of magnetic error changes when the ship rolls or heels, and which type stays mostly constant • Match each option with the specific type of error it is designed to correct: deviation, semicircular error, quadrantal error, or heeling error • Think about which corrector must be oriented in line with the vertical magnetic field to counteract changes caused by heel

✅ Before You Answer

• For each device listed, decide whether it mainly corrects permanent magnetism or soft iron induced magnetism • Ask: which corrector’s effect would change as the ship’s vertical magnetic relationship changes due to heel? • Verify which corrector is described in standard magnetic compass diagrams as the heeling-error corrector

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