Furuno DS-30 SONAR User Manual


 
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13. Ship’s Speed
14. Rate Sensor
The ship’s speed over-the-ground or through-the-water is displayed as
determined by the tracking mode selected. To judge which speed is
being displayed, look at item 7: ground or water.
The rate sensor chosen in the INT. SETUP menu is displayed: Internal,
External ROT or External HDG.