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Weather |
Zeus Touch Operator Manual
Weather
GRIB Weather
GRIB is the format used by the meteorological institutes of the world to transport and
manipulate weather data. You can import GRIB files via a memory card or GoFree onto the
Zeus unit and overlay the information onto your charts.
GRIB Symbols explained
Zero knots / Indeterminate wind direction
Wind direction
Small Barb value
= 5 knots
Wind direction
Large Barb value
= 10 knots
Wind direction
Arrow Barb value
= 50 knots
Wind direction
2 x Large Barbs 1 x Small Barb = 25 knots
The wind tail indicates the relative wind direction from 0 to 359º. Wind speed is indicated by a
combination of small and large barbs at the end of the wind tail. If a combination of 5 and 10
knot barbs are shown on a tail then these will need to be added together to give you the total
wind speed. The example below left shows 3 x large barb + 1 x small barb = 35 knots. Below
right shows 60 knots in a different direction, 1 x 50kn arrow + 1 x Large barb.
Direction
Large Barbs
Small Barb
Large Barb
50kn Arrow
Loading a GRIB File to Zeus Memory
¼
Note:
Zeus does not come pre loaded with any GRIB files.
To load a GRIB file onto your Zeus unit, insert a Micro SD Memory card that contains a GRIB file
into the card port on the front of the Zeus Touch. To view the contents go to Files menu.
Select the required GRIB file and copy it to the GRIBs folder on the Zeus Touch..
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