The compass rose on a nautical chart...

Question 1 / 2707066636ee928f7522a1c5193d4

Question 1 of 2707066636ee928f7522a1c5193d4

The compass rose on a nautical chart indicates both variation and which other information?

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Question 1 of 27070

The compass rose on a nautical chart indicates both variation and which other information?

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🔍 Key Concepts

• Difference between variation and deviation on a chart • What extra text is printed inside or near the compass rose besides the variation value • How annual change in the Earth's magnetic field is shown on charts

💭 Think About

• Look at what information a compass rose must provide to help you update the magnetic variation to the current year • Ask yourself: does a chart ever show deviation values, or are those specific to an individual vessel’s compass? • Consider which of the options would logically be a rate (change per year) rather than a one-time error value

✅ Before You Answer

• Verify whether deviation is ship-specific or chart-specific information • Check if compass error combines both variation and deviation or if it is broken out on the chart • Look closely at a sample compass rose and read the small-print note about annual change and how it is expressed (e.g., minutes per year East or West)

Question 1 of 27070

The compass rose on a nautical chart indicates both variation and which other information?

Annual rate of precession change

Deviation

Annual rate of variation change

Compass error

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