Harbours



  • North — North wind (Boreas)
  • North North-East — North-East wind
  • North-East — North-East wind
  • East North-East — East wind
  • East wind
  • East South-East — East Sirocco wind
  • South-East — Sirocco
  • South South-East — South Sirocco wind
  • South — South wind
  • South South-West — South South-West wind
  • South-West — South-West wind
  • West South-West — West South-West wind
  • West — (Zephyr) (West wind)
  • West North-West — West North-West wind
  • North-West — North-West wind
  • North North-West — North North-West wind


Beaufort scale
Beaufort
Degree
Type of
wind
Wind speed Characters
knots m/sec
0 Dead calm 1 0 ¸ 0.2 the smoke rises vertically; the sea is one mirror
1 Breath of wind 1 ¸ 3 0.3 ¸ 1.5 the wind turns aside the smoke; ripples of the water
2 Light breeze 4 ¸ 6 1.6 ¸ 3.3 the leaves move; small but obvious waves
3 Stiff breeze 7 ¸ 10 3.4 ¸ 5.4 constantly churned leaves and twigs; small waves,crests that begin to break
4 Moderate wind 11 ¸ 16 5.5 ¸ 7.9 the wind raises powder, leaves sand banks, the coppers is churned; small waves that become longer
5 Stiff wind 17 ¸ 21 8.0 ¸ 10.7 the shrubs with leaves oscillate; small are formed waves in inner waters; lengthened moderate waves
6 Fresh wind 22 ¸ 27 10.8 ¸ 13.8 great churned, hissing sound between coppers the telegraphic wires; billow with white foam crests are formed, and sprays
7 Strong wind 28 ¸ 33 13.9 ¸ 17.1 entire churned trees, difficulty to walk against wind; the sea is large, the foam begins to being frayed in wakes
8 Gale 34 ¸ 40 17.2 ¸ 20.7 broken coppers, to walk against wind are impossible; lengthened billow of medium height and more, from the crests they detach whirlwinds of sprays
9 Strong gale 41 ¸ 47 20.8 ¸ 24.4 removed fireplaces and tiles; large big waves, thick wakes of foam and sprays, raised from the wind, reduce the visibility
10 Storm 48 ¸ 55 24.5 ¸ 28.4 rare in mainland, trees uprooted, serious damages to the rooms; enormous big waves with long crests to spandrel
11 Strong storm 56 ¸ 63 28.5 ¸ 32.6 rare, most serious devastations; enormous and high waves, that they can hide ships of medium tonnage; reduced visibility
12 Hurricane 64 + 32.7 + destruction of buildings, manufactured, etc; in sea the foam and the sprays reduce the visibility much
The speed of the wind is measured with the anemometer, and express in km/h and is suitable from the scale of Beaufort, that takes the name from the admiral British Francis Beaufort (Navam 1774-1857) employed to the service idro-graphic. He in the 1806 proposed a scale for the classification of the strength, that came then adopted from the British admiralty in the 1838 and in succession at 1874 o'clock from the rest of the world.

Douglas scale
Description Waves average height in metres
0 Calm (glassy) 0
1 Calm (rippled) 0 - 0,10
2 Smooth 0,10 - 0,50
3 Slight 0,50 - 1,25
4 Moderate 1,25 - 2,50
5 Rough 2,50 - 4
6 Very rough 4 - 6
7 High 6 - 9
8 Very high 9 - 14,00
9 Phenomenal over 14