Sea state | Description | Wave height [m] | Wind speed [m/s] |
---|---|---|---|
1 | Smooth | 0~0.3 | 0~3.1 |
2 | Slight | 0.3~0.9 | 3.1~6.2 |
3 | Moderate | 0.9~1.5 | 6.2~7.7 |
4 | Rough | 1.5~2.4 | 7.7~10.3 |
5 | Very rough | 2.4~3.7 | 10.3~12.9 |
6 | High | 3.7~6.1 | 12.9~15.4 |
7 | Very high | 6.1~12.2 | 15.4~25.7 |
8 | Precipitous | 12.2 ~ | 25.7 ~ |