| DOUGLAS SCALE | ||||
| LEVEL | DENOMINATION | HEIGHT WAVES (mts.) | ||
| 0 | Calm | 0 | ||
| 1 | Nearly calm | 0 a 0,1 | ||
| 2 | Little moved | 0,1 a 0,5 | ||
| 3 | Moved | 0,5 a 1,25 | ||
| 4 | A lot moved | 1,25 a 2,5 | ||
| 5 | Rough | 2,5 a 4 | ||
| 6 | Much rough | 4 a 6 | ||
| 7 | Flood | 6 a 9 | ||
| 8 | Much flood | 9 a 14 | ||
| 9 | Stormy | More than 14 | ||
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| DOUGLAS SCALE | ||||
| LEVEL | DENOMINATION | HEIGHT WAVES (mts.) | ||
| 0 | Calm | 0 | ||
| 1 | Nearly calm | 0 a 0,1 | ||
| 2 | Little moved | 0,1 a 0,5 | ||
| 3 | Moved | 0,5 a 1,25 | ||
| 4 | A lot moved | 1,25 a 2,5 | ||
| 5 | Rough | 2,5 a 4 | ||
| 6 | Much rough | 4 a 6 | ||
| 7 | Flood | 6 a 9 | ||
| 8 | Much flood | 9 a 14 | ||
| 9 | Stormy | More than 14 | ||
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