| 1. | The lighthouse, built in 1868, was a navigational aid until about 1900.
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| 2. | The Canadian Coast Guard maintains a lighthouse as a navigational aid beacon.
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| 3. | Other rooms show lighthouse technology, history of navigational aids, and historical photos.
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| 4. | It's meant as a rough navigational aid rather than an actual map.
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| 5. | Drivers carry global positioning devices as navigational aids during the seven-hour journey.
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| 6. | Fish aggregating devices and navigational aids were located at various strategic points.
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| 7. | They deliver weather images, monitor ground resources, provide telecommunications and navigational aid.
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| 8. | Of these 1, 771 navigational aids, only 160 stations had resident keepers.
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| 9. | Charts will show lighthouses, lateral buoy, cardinal marks and other navigational aids.
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| 10. | Contemporary navigational aids have simplified the problem of determining course to steer.
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