The beaufort scale ranges from 0 to 12 and indicates the strength of the wind or waves.

Beaufort is the scale established by Admiral Francis Beaufort in the early 1800s and is commonly used to indicate the state of the sea and the strength of the wind. In the common language the term "beaufort" is replaced by "force", for example a "sea force 3" indicates a value of beaufort equal to 3.

Normally for small motor boats with sea force 3 navigation is no longer pleasant, while for sailing boats starts the "fun" starting from this value.

Value (strength) BeaufortAssociated termWind force (ms)Wave height (m)Sea conditions
0Calm 0 - 0,20/0The sea is completely calm (calm)
1Wind Burr 0,3 - 1,50,1/0,1Light ripples on the surface
2Light breeze 1,6 - 3,30,2/0,3The waves are short and small, not rippling yet.
3Tensioned breeze 3,4 - 5,40,6/1Waves longer than the previous ones and white crevices at the top of the wave begin to be visible
4Moderate wind 5,5 - 7,91/1,5The waves get longer and the waves start to break.
5Tensioned wind 8,0 - 10,72/2,5The waves get longer and the ridges start to spread some spray
6Fresh wind 10,8 - 13,83/4Large waves (large horses) with foam-white ridges
7Strong wind 13,9 - 17,14/5,5The horses swell, the foam formed by the waves is sprayed in the direction of the wind
8Burrasca 17,2 - 20,75,5/7,5The ridges break and form swirling splashes that are sucked in by the wind
9Strong storm 20,8 - 24,47/10Ridges start to break, strips of foam thicker and visibility may be reduced
10Storm 24,5 - 28,49/12,5The sea has a whitish appearance and visibility is reduced
11Violent storm 28,5 - 32,611,5/16The sea is all covered by schools of foam, the wind nebulizes the ridges and visibility is reduced
12Hurricane over 32.7> 14The air is full of splashes, the foam whitens the sea completely and visibility is very reduced