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Celestial Navigation Tools of Yore
A crossword exploring classic antique nautical instruments used by sailors for celestial navigation and marine exploration.
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Across
  • 1. Accurate timekeeper essential for determining longitude
  • 2. Nautical map used for plotting courses
  • 4. Optical instrument used for viewing distant objects
  • 5. Navigational tool used to measure distances on a chart
  • 10. Tool used to measure a ship’s speed through water
  • 11. Precision instrument for measuring the angle between celestial objects
  • 12. ASTROLABE Older form of astrolabe adapted for sea use
Down
  • 3. Magnetic instrument indicating direction
  • 6. Navigation method using speed and direction
  • 7. Ancient instrument for measuring the altitude of stars
  • 8. Reference line for celestial angle measurement
  • 9. Signal device used aboard ships for keeping time or alarms
  • 13. Stand holding the ship’s compass
  • 14. Specialized instrument for measuring celestial bodies' elevation
  • 15. Device used to measure angles up to 90 degrees

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