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"BRIG"
BEAUFORT Wind Scale and Corresponding State of the Sea, After Few Hours of Wind, Away From the Coast.
Boat Design Categories (Directive 2013/53/EU):
NO TE:
T he significant wav e height
is the mean height of the highest one-third of the waves , whic h approximately
corresponds to the wave height estimated by an experienced observer. Some waves will be double this height.
State of the sea
For ce
Denomination
Knots
K m/h
m / s e c
and wave height in meters
0
Calm
<1
<1
0-0.2
Calm
0
1
Light Air
1-3
1-5
0.3-1.5
Calm
0
2
Light Breeze
4-6
6-11
1.6-3.3
Almost calm
0.2
3
Gentle Breeze
7-10
12-19
3.4-5.4
Almost calm
0.2
4
Moderate Breeze
11-16
20-28
5.5-7.9
Small waves
0.5
5
Strong Breeze
17-21
29-38
8.0-10.7
Large waves
1.25
6
Fresh W ind
22-27
39-49
10.8-13.8
Large waves
2.0
7
Strong W ind
28-33
50-61
13.9-17.1
Very large waves
2.5
8
Gale
34-40
62-74
17.2-20.7
Rough sea
4
9
Strong Gale
41-47
75-88
20.8-24.4
Very rough sea
6
10
Storm
48-55
89-102
24.5-28.4
H eavy
9
11
Violent Storm
56-63
103-117
28.5-32.6
Very heavy
14
12
Hurricane
64 and over
118 and over
32.7and over
Stormy
14 and over
Design category
"A" - "Ocean"
"B"- "Offshore"
"C"- "Inshore"
"D"- "Sheltered waters"
Wind force
(Beaufort scale)
exceeding 8
up to,and including, 8
up to,and including, 6
up to,and including, 4
Significant wave height
exceeding 4
up to,and including, 4
up to,and including, 2
up to,and including, 0.3
