Error Correction - BEN Marine ANTHEA Notice D'utilisation Et D'installation

The real speed will be:
The average real speed will be:
Suppose that during the first run over the base distance, the stop watch was started when
the distance counter was at: 24.1 miles, and that it was stopped when the distance counter
was at: 25.4 miles, the stop watch will have run 400 seconds.
The distance read from the distance counter will be: 25.4 - 24.1 = 1.3 mile.
Calculating the indicated speed gives:
During the second run the stop watch was started when the distance counter was at 26.0
mile and stopped when the distance counter was at 27.2 miles, the stop will have run 372
seconds.
The distance read from the distance counter is: 27.2 - 26 = 1.2 miles.
The speed calculated is:
The average value of the speeds indicated is :

Error correction:

First evaluate the error in percentage.
In the above example, the error:
The correction to be made is therefore: - 10 %.
ANTHEA OPERATION AND INSTALLATION MANUAL
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1,1 x 3600
= 10,9 knots
364
10,1 + 10,9
= 10,5 knots
2
1,3 x 3600
= 11,7 knots
400
1,2 x 3600
= 11,6 knots
372
11,7 + 11,6
= 11,65 knots
2
100 x (11,65 - 10,5)
= + 10 %
11,65
97MU001-F
30-B