Garmin 720 Manuale Utente

Charts and 3D Chart Views

See “Configuring the Appearance of Other Vessels” (

See “About Chart Overlay Numbers” (

See “Waypoints” (

See “Tracks” (

The Automatic Identification System (AIS) enables you to identify and track other vessels.

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.

➊

➏

➎

➍

➌

➋

➊

AIS 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 is set to 

Show (

). If the AIS 

transmission from the vessel is lost, a message banner appears.

➋

Dangerous target is lost. A red 

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 dangerous target 

symbol disappears from the chart or the 3D chart view. 

➌

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. 

➍

The location of this symbol indicates the closest point of approach to a dangerous target, 

and the numbers near the symbol indicate the time to the closest point of approach to 

that target. 

➎

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 is set to 

Off, the target flashes, but the audible alarm does not sound and 

). If the AIS transmission from the vessel is 

lost, a message banner appears.