exploration & colonization

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Across
  1. 2. defense
  2. 4. used to guide people
  3. 7. a large watercraft used for traveling
  4. 10. used to bring goods
  5. 11. one of three ships
  6. 12. weapon used to attack other ships or defend
  7. 16. someone who can use the equipment
  8. 17. metal
  9. 18. food
  10. 20. valuables to use
Down
  1. 1. helps navigate
  2. 3. one of three ships
  3. 4. used to tell time
  4. 5. a piece of material extended on a mast to catch the wind and propel a boat or ship or other vessel
  5. 6. one of three ships
  6. 8. container used to store items
  7. 9. someone who makes and reads maps
  8. 11. used to flavor food
  9. 13. object to show position based on the alignment of the stars
  10. 14. stuff used to supply
  11. 15. a famous explorer
  12. 19. rare material