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What are magnetic compasses?

Answer:
It is the oldest instrument for navigation and has been a vital tool for navigators at sea for centuries. The compass allows ships to steer a selected course. By taking bearings of visible objects with a compass, the navigator is also able to fix a ship's position on a chart.
First answer by ID3564753121. Last edit by Greg C01. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 1 [recommend question].

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