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Bible Encyclopedias
Beaufort Scale
1911 Encyclopedia Britannica
Beaufort scale.
Corresponding wind.
Limits of hourlyvelocity.
Numbers.
Miles per hour.
o
Calm
Under 2
1-3
Light breeze
2-12
4-5
Moderate wind
13-23
6-7
Strong wind
24-37
8-9
Gale
38-55
io-i
Storm
56-75
12
Hurricane
Above 75
BEAUFORT SCALE, a series of numbers from o to 12 arranged by Admiral Sir Francis Beaufort (1774-1857) in 1805, to indicate the strength of the wind from a calm, force o, to a hurricane, force 12, with sailing directions such as "5, smacks shorten sails" for coast purposes, and "royals, &c., ` full and by '" for the open sea. An exhaustive report was made in 1906 by the Meteorological Office on the relation between the estimates of wind-force according to Beaufort's scale and the velocities recorded by anemometers belonging to the office, front which the following table is taken: -
These files are public domain.
Chisholm, Hugh, General Editor. Entry for 'Beaufort Scale'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/b/beaufort-scale.html. 1910.