means of transport

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Across
  1. 4. can fly horizontally and vertically
  2. 8. carrier a big ship that carries military planes
  3. 12. a boat that can move under water
  4. 13. carries great amounts of oil or gas
Down
  1. 1. moves on rails, operates between cities and countries
  2. 2. carries people and goods over the oceans
  3. 3. a ship that carries cars and people, mostly holiday makers
  4. 5. flies through the air at 700 miles per hour
  5. 6. can fly, often used for observation purposes
  6. 7. public transport, rolls on streets
  7. 9. public transport rolls on rails, operates within cities
  8. 10. private vehicle with four wheels
  9. 11. driven by your own power