Where can the annual change in variation for...

Question 1 / 2707066636ee928f7522a1c51912f

Question 1 of 2707066636ee928f7522a1c51912f

Where can the annual change in variation for an area be found?

Question 1 of 27070

Where can the annual change in variation for an area be found?

🔍 Key Concepts

• Magnetic variation vs compass deviation – what each one means and where it is recorded • How information is displayed on a nautical chart’s compass rose • Whether variation is fixed or changes over time (annual change)

💭 Think About

• Which of these choices is directly tied to a specific geographic location on the Earth’s surface? • Where does a navigator normally look to see both the present magnetic variation and how it will change over time? • Do compass deviation tables show errors of the Earth’s magnetic field or errors specific to a vessel’s own compass and equipment?

✅ Before You Answer

• Check which source is actually printed on the chart itself for the area in question. • Verify which item records vessel-specific errors versus Earth-field (variation) information. • Confirm that the correct place will show both the variation value and the annual rate and direction of change (e.g., “decreases 7’ annually”).

Question 1 of 27070

Where can the annual change in variation for an area be found?

The handbook for Magnetic Compass Adjustment, Pub 226

The center of the compass rose on a chart of the area

The compass deviation table

Variation does not change.