Across
- 1. — Type of location determined by neighboring seas and oceans
- 4. — Group of Islands declared part of the Philippines by PD No. 1596
- 7. — Island chain that includes part of the Kalayaan Group of Islands
- 9. — The ocean floor within a country's territorial waters
- 10. — The third largest island in the Philippines
- 12. — Land and water areas that fall within a country's jurisdiction
- 13. — Type of location determined using neighboring countries as a reference
- 14. — The largest island in the Philippines
- 15. — Coordinate measured in degrees east or west of the Prime Meridian
- 16. — UN convention (acronym) that extended the territorial sea to 12 nautical miles
- 17. — A large group of islands, such as the Philippines
Down
- 1. — Imaginary line running from the North Pole to the South Pole
- 2. — The central island group of the Philippines
- 3. — Line dividing the Earth into Northern and Southern Hemispheres
- 5. — Agency (acronym) that mapped the Philippines' top islands
- 6. — The 15th largest island in the Philippines
- 8. — Imaginary line running from west to east across the globe
- 9. — The layer of soil beneath the Philippines' land territory
- 11. — The second largest island in the Philippines
- 14. — Coordinate measured in degrees north or south of the Equator
