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The scale to estimate the state of the sea with english, italian, french and spanish terminology
The "state of the sea" is the locally observed motion of the waves generated
by the combined effects of "wind sea" and "swell"
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WEBCAM
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DOUGLAS SCALE
| WIND SEA |
Italiano
Mare di vento |
Français
Mer du vent |
Español
Mar de viento |
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DESCRIPTION TERM
State of the sea |
WAVES
AVERAGE HEIGHT |
Stato del mare |
État de la mer |
Estado del mar |
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| 0 |
Calm (glassy) |
- |
Calmo |
Calme |
Calma |
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| 1 |
Calm (rippled) |
0 - 0,10 metres |
Quasi calmo |
Calme (ridée) |
Calma (rizada) |
|
| 2 |
Smooth |
0,10 - 0,50 metres |
Poco mosso |
Belle |
Marejadilla |
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| 3 |
Slight |
0,50 - 1,25 metres |
Mosso |
Peu agitée |
Marejada |
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| 4 |
Moderate |
1,25 - 2,50 metres |
Molto mosso |
Agitée |
Fuerte marejada |
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| 5 |
Rough |
2,50 - 4 metres |
Agitato |
Forte |
Gruesa |
|
| 6 |
Very rough |
4 - 6 metres |
Molto agitato |
Très forte |
Muy gruesa |
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| 7 |
High |
6 - 9 metres |
Grosso |
Grosse |
Arbolada |
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| 8 |
Very high |
9 - 14 metres |
Molto grosso |
Très grosse |
Montañosa |
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| 9 |
Phenomenal |
over 14 metres |
Tempestoso |
Énorme |
Enorme |
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The "wind sea" is the motion of the waves generated
by the wind blowing directly on the observed sea area
or in its immediate vicinity
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| SWELL |
Italiano
Mare lungo |
Français
Houle |
Español
Mar de leva |
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| WAVE LENGTH AND HEIGHT |
SPECIFICATION |
Metres |
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| 0 |
No swell |
Short wave
Average wave
Long wave
Low wave
Moderate wave
Heavy wave |
< 100
100 - 200
> 200
< 2
2 - 4
> 4 |
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| 1 |
Very low (short or low wave) |
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| 2 |
Low (long and low wave) |
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| 3 |
Light (short and moderate wave) |
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| 4 |
Moderate (average and moderate wave) |
NOTE
The swell reports also comprise the wave direction according to
the eight main directions of the wind rose expressed in the english notation
(N, NE, E, SE, S, SW, W, NW). For instance: Swell 2 from SW or Low swell from NW.
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| 5 |
Moderate rough (long and moderate wave) |
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| 6 |
Rough (short and heavy wave) |
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| 7 |
High (average and heavy wave) |
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| 8 |
Very high (long and heavy wave) |
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| 9 |
Confused (wave length and height indefinable) |
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The "Swell" waves are generated by winds blowing over a distant sea area
which travel rapidly over the surface with a regular period and flat crests
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