Garmin GPSMAP 546S Owner's Manual - Page 29
About AIS, AIS Targeting Symbols, AIS alerts you to area traffic. When connected to an external AIS - gps manual
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About AIS AIS alerts you to area traffic. When connected to an external AIS device, the chartplotter can show some AIS information about other vessels that are within range, that are equipped with a transponder, and that are actively transmitting AIS information. The information reported for each vessel includes the Maritime Mobile Service Identity (MMSI), the location, the GPS speed, the GPS heading, the time that has elapsed since the last position of the vessel was reported, the nearest approach, and the time to the nearest approach. Lost AIS target Dangerous AIS target AIS target Tracking AIS target Lost dangerous AIS target Closest point and time of approach to dangerous target AIS Targeting on the Navigation Chart Using Charts AIS Targeting Symbols Symbol Description AIS vessel. The vessel is reporting AIS information. The direction in which the triangle is pointing indicates the direction in which the AIS vessel is moving. Target is selected. Target is activated. The target appears larger on the chart. A green line attached to the target indicates the heading of the target. The MMSI, speed, and direction of the vessel appear beneath the target, if the details setting has been set to Show (page 25). If the AIS transmission from the vessel is lost, a message banner appears. Target is lost. A green X indicates that the AIS transmission from the vessel is lost, and the chartplotter displays a message banner asking whether the vessel should continue to be tracked. If you discontinue vessel tracking, the lost target symbol disappears from the chart or the 3D chart view. Dangerous target in range. The target flashes while an alarm sounds and a message banner appears. After the alarm is acknowledged, a solid red triangle with a red line attached to it indicates the location and the heading of the target. If the safe-zone collision alarm (page 26) is set to Off, the target flashes, but the audible alarm does not sound and the alarm banner does not appear. If the AIS transmission from the vessel is lost, a message banner appears. GPSMAP 400/500 Series Owner's Manual 23