Waves and Sea states

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Across
  1. 3. Water level when the surface is flat
  2. 5. The number of wave crests that pass a fixed point per unit of time
  3. 8. The highest point of a wave
  4. 10. The lowest point of a wave
  5. 13. The vertical distance from crest to trough
  6. 14. small wavelets averaging about 8 cm high. Continuous energy is needed to form ripples and push them to the next stage of wave formation
  7. 16. Length of time wind has been blowing
Down
  1. 1. The vertical distance from crest to average surface level or still water level
  2. 2. Unit of marine speed equal to 1 nautical mile per hour
  3. 3. Includes ripples, chops, storm waves and swells Waves that no longer need wind to push them forward
  4. 4. The horizontal distance from crest to crest
  5. 6. Distance the wind is blowing
  6. 7. Next stage of a wave after a ripllet pushing the wave to about 1 meter high
  7. 9. Wave conditions of the sea
  8. 11. The time it take for one complete wave from crest to crest to pass a fixed point
  9. 12. The speed of the wave in a certain direction, measured in distance vs. time
  10. 15. when gale-force intensity winds of 70 km/h or more