Automatic identification system – Garmin GPSMAP 740s User Manual

Page 16

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12

GPSMAP 700 Series Owner’s Manual

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.

AIS Targeting on the Navigation Chart

About AIS Search and Rescue Transmitters

AIS Search and Rescue Transmitters (AIS-SART, or SART) are self-contained devices that transmit

emergency position reports when activated. SART transmissions are different than standard AIS transmissions,

so they look different than standard AIS symbols on the chartplotter. Instead of tracking a SART transmission

for collision avoidance, you track a SART transmission to locate and assist a vessel.

Navigating to a SART Transmission

When you receive a SART transmission, a distress signal alarm appears.

Select Review

>

Go To

to begin navigation to the SART transmission.

AIS Targeting Symbols

Symbol

Description

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 (

page 14

). If the AIS

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

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.

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.

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