MCQs on Magnetic Compasses and SOLAS

What is the primary function of a magnetic compass on SOLAS-compliant vessels?

• As the main navigation system

• As a backup to the gyrocompass

• To measure latitude changes

• For cargo alignment

Where should a magnetic compass be installed on a vessel according to SOLAS?

• Near the engine room

• On the centerline of the vessel or as close as possible

• At the aft of the ship

• Next to electronic equipment

What must every SOLAS-compliant vessel carry to ensure compass accuracy?

• GPS tracking system

• Deviation table or card

• Multiple magnetic compasses

• Radar alignment system

Why must the magnetic compass be illuminated?

• To enhance magnetic accuracy

• For visibility during night navigation

• To measure environmental conditions

• To detect interference from other equipment

What is the minimum accuracy required for a magnetic compass under IMO standards?

• Within 3°

• Within 1°

• Within 5°

• Within 0.5°

Which material property is essential for magnetic compass construction?

• Non-magnetic but corrosion-resistant

• Lightweight and magnetic

• Flexible and magnetic

• Transparent and shock-resistant

What ensures stability and reduces oscillations in a magnetic compass?

• Gimbal systems

• Fluid damping system

• Electrical shielding

• Electronic recalibration

What is the purpose of compensating magnets in a magnetic compass?

• To align with true north

• To adjust for deviations caused by the ship's magnetic field

• To counteract gyrocompass errors

• To improve environmental resilience

What is True North?

• Direction to the Earth's magnetic pole

• Direction along Earth's surface leading to the geographic North Pole

• Adjusted direction after deviation corrections

• The direction of compass alignment

What is Magnetic North influenced by?

• Earth's rotation

• Geographic position

• Earth's magnetic field

• Gyroscopic effects