| Scale | Sea State | Possible Wave Height (m) | Max Wave Height (m) |
|---|---|---|---|
| 0 | Glassy | 0 | 0 |
| 1 | Rippled | 0.1 | 0 - 0.1 |
| 2 | Smooth | 0.2 | 0.1 - 0.5 |
| 3 | Slight | 0.6 | 0.5 - 1.25 |
| 4 | Moderate | 1.0 - 2.0 | 1.25 - 2.5 |
| 5 | Rough | 3.0 | 2.5 - 4 |
| 6 | Very Rough | 4.0 | 4 - 6 |
| 7 | High | 5.5 - 7.0 | 6 - 9 |
| 8 | Very High | 9 - 11.5 | 9 - 14 |
| 9 | Phenomenal | 14+ | 14+ |
