Sea State-Wave Height

  • Smooth < 0.5m

  • Slight 0.5 to 1.25m

  • Moderate 1.25m to 2.5m

  • Rough 2.5m to 4.0m

  • V Rough 4.0m to 6.0m

  • High 6.0m to 9.0m

  • V high 9.0m to 14m

  • Phenomenal >14m