Charts and 3D Chart Views

Showing Other Vessels

See “Configuring the Appearance of Other Vessels” (page 50).

Showing and Configuring Data Overlay

See “About Chart Overlay Numbers” (page 48).

Using Waypoints

See “Waypoints” (page 26).

Using Tracks

See “Tracks” (page 30).

Automatic Identification System

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

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.

➊

➋

➌

➍

➎

➏

AIS Targeting on the Navigation Chart

AIS Targeting Symbols

Symbol Description

➊AIS 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 (page 14). If the AIS transmission from the vessel is lost, a message banner appears.

➋Dangerous 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.

➌AIS 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.

➍The 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.

➎Dangerous 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 the alarm banner does not appear (page 14). If the AIS transmission from the vessel is lost, a message banner appears.

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GPSMAP 700 Series Owner’s Manual