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The purpose of a lighthouse is to steer mariners, whilst in dense fog or dark nights, away from cliffs, land and shorelines, coral reefs and other potentially hazardous areas. the lighthouse provides a signal to ships that they are close to such areas. Lighthouses also need to be visible during the day, as they perform the similar function of warning of reefs and underwater hazards such as rocks. The Bell Rock lighthouse off the coast of Scotland, for example, is situated directly on top of a rock which is visible for only a short period of time each day.

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9y ago

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