. Man ser, at Vinde, hvis Styrke er over 2 Beaufort 
Scale, ere angivne med Hensyn til Hastighed altid meget 
nær lige saa nøjagtigt, som denne er maalt ombord, og med. 
Hensyn til Retning mindst paa 1 Stregs Nøjagtighed. I 
Overensstemmelse hermed er i Tabellerne over de meteoro- 
logiske Observationer Vindens Retning angiven paa nær- 
meste Streg og Vindens Hastighed i 1876 paa hel Meter, 
i 1877 og 1878 paa Tiendedel Meter pr. Secund. 
Beregningen af Vindobservationerne udførtes paa føl- 
gende Maade: 
Skibets Fart, udtrykt i Kvartmil 1 Timen, omgjordes 
til Meter pr. Secund efter følgende Tabel: 
28 
I Kvartmil i Timen = 0.5153 Meter pr. Secund. 
From the above Tables, it appears that a wind with 
a force of more than 2 Beaufort Scale, is, as regards velocity, 
always given with very nearly the same accuracy as 
measured on board, and, as regards direction, with an 
accuracy of at least 1 point. According to the above, 
in the meteorological observations set forth in the Tables 
the direction of the wind has been given to the nearest 
point, and the velocity of the wind, for 1876, to the nearest 
whole metre, for 1877 and 1878 to the nearest tenth of a 
metre per second. 
The computation of the wind-observations was effected 
as follows: — 
The speed of the vessel, expressed in miles an hour, 
was converted into metres per second, according to the fol- 
lowing Table: — 
(1 Mile an Hour = 0.5155 Metre per Second). 
iKevartmil Meter pr. Secund. Miles 
i (Metres per Second). ati 
Timen. å - | en 3 A 5 6 > | 8 9 Hour. 
O 0.0 O.1 | O.1 0.2 0.2 0.3 0.3 | 0.4 0.4 0.5 (0) 
I 0.5 0.6 | 0.6 0.7 0.7 0.8 0.8 | 0.9 0.9 1.0 I 
2 1.0 L.I oil 1.2 Te iho iho 1.4 1.4 1.5 2 
3 1.5 1.6 1.6 1d 1.7 1.8 1.8 | 1.9 1.9 2.0 BE 
4 Dol QoP 2.2 203 208 2.4 2.4 | 2.5 2.5 2.6 4 
5 2.6 Do 2o7 2.8 2.8 2.9 20) || B® 3:0 Sol 5 
6 3.1 3.2 3.2 3:3 3:3 | 3-4 | 3:4 3:5 3:5 3.6 6 
7 Bd | 87 | 87 3.8 38 | 39 | 30 4.0 4.0 4.1 7 
8 4.1 na Ve Ag || ag diols || a 4.5 4.5 4.6 8 
9 4.6 4.7 4.7 4.8 | 4.8 A) | 49 5.0 5.0 5.1 9 
10 5.2 5.2 5-3 5-4 | 5:4 595 5:5 5.6 5.6 5-7 10 
I I Gog 5.8 5.8 5.9 | 5.9 6.0 6.0 6.1 6.1 6.2 I I 
12 6.2 6.3 6.3 6.4 | 6.4 6.5 | 6.5 6.6 6.6 6.6 12 
Vindmaalerens Registrering omgjordes, i 1876, til Vind- 
hastighed i Meter pr. Secund. 1 Delstreg regnedes, som 
Sino: 
6 
ovenfor forklaret, lig 
30 
1878 havde man kun at addere Frictionscoefficienten til den 
registrerede Vindhastighed. 
Af den paa nærmeste hele Grad noterede Kurs paa 
Compasset beregnedes efter Capt. Willes Deviationstabeller 
den rigtige misvisende Kurs. Med den for den anlagte 
Meter pr. Secund. 
The registration of the anemometer was converted, for 
1876, into metres per second. One division of the scale 
© 
29 
was taken, as stated above, equal to 30 
In 1877 and 1878, the friction-coefficient had only to be 
added to the registered velocity of the wind. 
Taking the course per compass within the nearest 
whole degree, the true magnetic course was found from 
Captain Wille’s Deviation Tables. With the value of the 
metre per second. 
