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IS15 General Manual
18 20220760L
True Wind Speed Alarm limit
Refer to Figure 2-2, page 12 to set the wind speed alarm limit (0-
99 knots).
Screen 3
WIND DIRECTION
The screen displays the Wind Direction in degrees and the unit
(‘T’rue or ‘M’agnetic). Refer to page 20.
Screen 3 has a sub screen for setting the magnetic variation.
Refer to page 21.
Notes !
1. The Wind Direction is calculated from available heading
data. The wind direction given is the effective wind direction
over the water. The display will be most accurate after a
period on one heading, however, it will respond rapidly to
course changes.
2. If there is no heading data, but Course Over Ground (COG)
data is available then the Wind Direction is calculated from
the Course Over Ground. In this case there is compensation
for the tide, and the wind direction given is the effective wind
direction over the ground. However the display will not be
accurate after a course change, and will require a period on
one heading before it is correct. (Any errors in the
Navigation Receiver’s fix will degrade the accuracy of the
wind direction.)
3. The Wind Direction is referenced to either Magnetic or True
North as selected for the heading. The data can be converted
from one to the other if the local magnetic variation is
available (page 20).
4. Note that the ‘TRUE’ and ‘APPARENT’ readings that are
shown in this group of screens relate to the Wind Speed and
Angle, and not the Wind Direction.
20


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  • Simrad is15 multi???
    How do u convert display depth meters to feet?
    Help Submitted on 17-6-2023 at 13:49

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