Across
- 4. – Mathematical concepts related to angles and triangles, used in calculations for navigation.
- 8. – Natural objects in the sky, such as the sun, moon, stars, and planets.
- 9. – Major sea pathways connecting the Arabian Peninsula, East Africa, India, and Southeast Asia.
Down
- 1. – Compiled data on celestial positions used by navigators for reference.
- 2. – An improved quadrant incorporating trigonometric functions for easier calculations.
- 3. – A period of European global exploration (15th–17th centuries) influenced by Islamic navigational tools.
- 5. – The angular distance of a location north or south of the Earth's equator, measured in degrees.
- 6. – A sighting mechanism on a quadrant used for aligning with a celestial body.
- 7. – A quarter-circle instrument used to measure the altitude of celestial bodies for navigation.
- 10. – The angle of a celestial body above the horizon.