Simrad SX90 - DATASHEET FOR NAVAL AND COAST GUARD REV A, Быстрый старт

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Speed Vector
Speed Vector
shows you the predicted course and speed of the tracked target. The
prediction is based on target’s current movements. The estimate is limited to one minute.
The information is provided with a line indicating the target’s course. The length of
the line reflects its speed.
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Bow Marker
This function displays a dotted line drawn from the bow of the vessel symbol. The
line reflects your vessel’s current heading.
Do not confuse this line with the bearing line.
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Current Vector
This function shows you the speed and direction of the water current under your vessel.
The function draws a line starting under the vessel symbol. The direction of the line
indicates the direction of the water current. The length of the line reflects its speed.
For this function to work, a sea current meter must be connected to the SX90. The use of
an ADCP (Acoustic Doppler Current Profiler) is recommended.
Simrad SX90 Quick Start Guide