What is Douglas Sea State 3?
Often, the terms Douglas Sea State 3, a Significant Wave Height and the wind wave or swell are used in the same sentence of a Charter Party. For example, “AND UP TO DOUGLAS SEA STATE 3 (UP TO MAXIMUM 1.25 METERS HEIGHT FOR WAVE AND SWELL”).
What is sea state level?
The “sea state” is the statistical description of wind-generated ocean wave properties, including their heights, periods and directions. Waves associated with the local wind form the wind sea, and waves propagating from remote storms are swells.
What does sea state 1 mean?
Ripples
Sea State 1 Conditions: Ripples. Wind Speed: 1 – 3 knots (wind. motion visible in smoke) Wave Height: 0.33 feet/10cm.
What sea state Scale does the Navy use?
the Beaufort Scale
The United States Navy incorporates the Beaufort Scale in its modern Sea State Chart, although the latter starts at zero and contains two less steps.
What is a sea state 4?
The sea state can either be assessed by an experienced observer, like a trained mariner or through instruments like weather buoys, wave radar or remote sensing satellites….WMO sea state code.
| WMO Sea State Code | Wave height | Characteristics |
|---|---|---|
| 4 | 1.25 to 2.5 metres (4 ft 1 in to 8 ft 2 in) | Moderate |
What is a moderate sea state?
1.25 to 2.5m Moderate. 2.5 to 4m Rough. 4 to 6m Very Rough. 6 to 9m High. 9 to 14m Very High.
How can you tell sea state?
Sea state depends on wind, current, coastal topography, the depth and nature of the sea bed. A sailor should be able to predict, qualitatively, how rough the sea is likely to be using a local wind forecast, tidal atlas and charted warnings of overfills and eddies.
How big is a 4m swell?
Swell explanations
| Description | Wave Length | Wave Height |
|---|---|---|
| Long, low swell | over 200 m | 0-2 m |
| Short swell of moderate height | 0-100 m | 2-4 m |
| Average swell of moderate height | 100-200 m | 2-4 m |
| Long swell of moderate height | over 200 m | 2-4 m |
Is a 2 Metre swell big?
Modern well-designed small craft are highly seaworthy. However wind and waves have a major bearing on performance and, in extreme conditions, can present a considerable threat….Sea waves and swell.
| Height | Description |
|---|---|
| Low | 0-2 metres |
| Moderate | 2-4 metres |
| Heavy | over 4 metres |
Can waves flip a boat?
A single, large wave can cause a boat to become unstable and flip over. If you rock a boat a little bit, it should return to its upright position. But rock the boat too much, and it can flip.
Is 3 foot waves big?
As far as I’m concerned, three feet is the perfect size for a wave. It’s big enough that you can ride a shortboard and still have some decent faces to work with, but it’s small enough to bust out the longboard and work on your nose-riding without worrying about bouncing your head off the reef.