Service manual

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7
AIS Monitoring System
About the AIS System
Sealite’s AIS AtoN (Automatic Identification System) operates in the international VHF Maritime Mobile
Band, enabling Port Authorities and other users to remotely monitor the real-time status of their AtoN
installation, whilst providing mariners in the broadcasting region crucial Message 21 information (as
defined by the international Telecommunications Union (ITU)) about the navigation aid.
The compact AIS AtoN TeleBeacon comes installed with Sealite’s range of SL125 products and interacts
with any AIS - enabled chart or radar screen, broadcasting information about the type and name of the
AtoN and GPS position.
In addition, the AIS AtoN broadcasts AIS Message 6 - enabling the operator to monitor the AtoN for solar
and battery voltage, flash setting and light status. Subject to the fitting of appropriate measuring devices,
meteorological data and a host of other parameters can be obtained via Message 8. This fixed frequency
telemetry unit operates on the designated AIS1 and AIS2 channels.
In technology partnership with Maritec Ltd, the AIS Telebeacon can be supplied integrated to the SL125
Type2 Complete or SLC600 power supply models - creating a completely integrated AIS - enabled
AtoN. Sealite’s AIS AtoN was developed in accordance with the International Association of Lighthouse
Authorities (IALA) Recommendations, and ITU Publications.
Figure 2: Automatic Identification System - Overview