Canadian Boating Exam Practice Quiz

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What must be done to avoid false information from a magnetic compass?

Replace it every year
Ensure it is mounted in an area free of magnetic and electrical interference
Paint it with a special coating
Keep it submerged in water while in use

The correct answer is: Ensure it is mounted in an area free of magnetic and electrical interference

A magnetic compass is a tool used for navigation that can be susceptible to interference from other magnetic and electrical sources. This can lead to false or inaccurate readings. While it may seem like a good idea to replace the compass every year (answer A) to ensure accuracy, it is not necessary if proper precautions are taken. Painting the compass with a special coating (answer C) may seem like a good way to protect it, however, this could also interfere with its accuracy and should not be done. Keeping the compass submerged in water while in use (answer D) is also not necessary and could cause damage to the compass. The best and most practical way to avoid false information from a magnetic compass is to ensure it is mounted in an area free of magnetic and electrical interference (answer B). This will provide the most accurate readings and eliminate the need for annual replacements or unnecessary interventions.