Maretron Alarm Module ALM100 Manual de usuario descargar pdf (Pagina 235)

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9.6.35 Wind

There are several different types of wind measurements. They are described in

the following section.

9.6.35.1 Wind Direction

Component Types (Apparent): Wind Angle, Close Wind Angle

Component Types (Ground): Digital, Cardinal, North Up Rose

Component Types (True): Wind Angle

References: Apparent, Ground, True

Units: Beaufort, kilometers/hour, nautical miles/hour,

miles/hour

9.6.35.1.1 Apparent

Displays the angle and speed of the wind relative to the vessel center line as it

appears to an observer on the deck of a moving vessel (does not subtract out the

speed of the vessel)

9.6.35.1.2 Ground

Displays the angle and speed of the wind relative to true or magnetic north

(depending on the unit setting of the ‘heading” parameter - see Section 9.4.8.3.2

on page 94 for details) relative to a stationary observer, calculated using

heading, course over ground (COG) and speed over ground (SOG)

9.6.35.1.3 True

Displays the angle and speed of the wind relative to the vessel centerline

(vessel’s speed is subtracted from apparent wind direction), calculated using

speed through water (STW) or speed over ground (SOG) depending on the unit

setting of the “Wind True Vessel Referenced” parameter under “Global Settings”

on the “Units” screen. (see Section 9.4.8.3 on page 94 for details).

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