Beaufort Scale

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The Beaufort Scale

 

The current of air, which balances high and low air pressure, is called wind. We usually measure it with the internationally used Beaufort scale. Sir Francis Beaufort (1777 - 1857), a British admiral and hydrograph, devised this scale in 1806 by summing up the effects of wind on water, sailing ships underway and land.

This is the reason why the Beaufort scale is not a linear measure. The scale expresses the wind force more than the wind speed. Nevertheless, there is a causal connection between wind speed and wind force. So it seems useful to compare force with speed, which is measured in meters per second (m/s), kilometers per hour (km/h) and knots (sea miles per hour).


1 nautical mile (nm) = 1,852 kilometer

1 knot (kn) = 1nm per hour

The Beaufort scale

bft

kn

m/s

km/h

classification

appearance of wind effects

0

0-1

0-0,2

0-1

calm

smoke rises vertically

1

1-3

0,3-1,5

1-5

light air

smoke drift indicates wind direction

2

4-6

1,6-3,3

6-11

light breeze

wind felt on face

3

7-10

3,4-5,4

12-19

gentle breeze

leaves are moving, light flags extended

4

11-15

5,5-7,9

20-28

moderate breeze

twigs are moving, flags extended

5

16-21

8,0-10,7

29-38

fresh breeze

small trees in leaf begin to sway

6

22-27

10,8-13,8

39-49

strong breeze

large tree branches moving, wind whistling in wires

7

28-33

13,9-17,1

50-61

near gale

smaller trees begin to sway, noticeably difficult to walk

8

34-40

17,2-20,7

62-74

gale

whole trees in motion, twigs are broken from trees, walking into the wind is very difficult

9

41-47

20,8-24,4

75-88

strong gale

slight structural damage occurs, slates blown off of roofs

10

48-55

24,5-28,4

89-102

storm

trees uprooted, considerable building damages

11

56-63

28,5-32,6

103-117

violent storm

widespread damage

12

64<

32,7<

118

hurricane

extreme destruction

 

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Bavaria Yachtbau, the world’s second largest Yacht manufacturer, has chosen Adriatic Challenge as the  official dealer of Bavaria sailing yachts in Croatia, Serbia, Montenegro and Albania.

 

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Adriatic Challenge Becomes the Official Dealer of Bavaria Sailing Yachts

2008-09-10

Adriatic Challenge Becomes the Official Dealer of Bavaria Sailing YachtsBavaria Yachtbau, the world’s second largest Yacht manufacturer, has chosen Adriatic Challenge as the  official dealer of Bavaria sailing yachts in Croatia, Serbia, Montenegro and Albania.  The recent take over of Bavaria by one of the world’s leading private equity investors Bain Capital GmbH, has lead to a new direction in the way the company will sell, and provide after sales service for their sailing yachts.

 



“First we will target the Croatian market, and later on, focus on the other countries in the region”, said Robert Lang, owner of Adriatic Challenge.  He began the company in 2005 by acquiring a fleet of 20 Bavaria 42 match boats, establishing the world’s top one design charter race fleet. 

 



Adriatic Challenge plans to stock new models at its base in Biograd, offering the opportunity for customers to try a vessel, and sail away as their new owner if satisfied.

 



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