MariWeb Aids to Navigation [AtoN]


The MariWeb™ AIS network has a number of unique features which enable its use in the Aids to Navigation [AtoN] environment. These features range from protecting AtoNs, to producing route maps enabling the planning of AtoN systems within maritime environments.

Application & Function
Physical Component
Flexibility & Reliability
  • IALA A-126 and IALA A-124 Recommendations compliant
  • Implements all AIS AtoN message formats defined in the IEC 62320-2
  • Allows the configuring of FATDMA slots for AtoN Transmit only units
  • Can be configured to transmit Virtual and Synthesised AIS AtoN messages
  • Implements a wide range of graphical and tabular reporting ensuring good AtoN system design
  • Alerts are used for lack of reporting, guard rings
  • All AIS data is stored with total detail for later analysis

The MariWeb™ system is able to deal with physical, synthesized and virtual AtoNs.

The MariWeb™ system is deployed in an estuary environment to protect the dredged channels and all of the AtoNs that are deployed in this critical environment.

The MariWeb™ system is able to detect the position of an AtoN fitted with an AIS transponder and ensure that it reports on a regular basis, stays within the assigned guard ring and that all alarms and reports that are gathered from the AtoN are as expected.

Should these change, alerts are generated by means of the MariWeb™ Event Manager [MEM] and a combination of the following is activated:

  • Emails are sent
  • An AIS addressed message sent to vessels within a defined range
  • The operator receives an on-screen alert

The MariWeb™ AtoN application includes the ability to send a synthesized AIS message where the actual AtoN position and status is obtained by means of non-AIS telemetry. This ability extends to sending virtual AIS AtoN messages where the message marks an AtoN that may or may not have a physical component.

The MariWeb™ AtoN application includes an audit trail that detects that virtual and synthesized AtoN messages have been correctly transmitted. This detail is recorded along with actual date and time stamp.

The MariWeb™ AtoN application can exist either in the Central office or at the AIS [PSS] fitted with the MariWeb™ Base Station Controller [BSC]. When the AtoN application exists in the BSC, any failure in the WAN does not affect the reliability of the transmission of the AtoN messages at the AIS PSS.

The collection of telemetry data for synthesized AtoN installations can be effected by means of GSM or local short-range radio data links.

The AtoN application, when installed on a MariWeb™ BSC at an AIS PSS does not consume any additional power and when using a virtual or low cost synthesized AtoN, the equipment that needs to be deployed and maintained is often reduced reducing the carbon footprint.

The ability of the AtoN application to run at either the central office or AIS PSS allows flexibility and also increases reliability. When configured correctly, should the Wide Area Network [WAN] fail, the MariWeb™ BSC installed at the AIS PSS will continue to run the AtoN application in an audited and monitored mode ensuring the safety of the local maritime environment.

The AtoN application can be set up using a simple Internet browser interface with the correct username and password. The AtoN application is part of the discoverable web services that exist on the MariWeb™ LSS and the MariWeb™ BSC ensuring that the AtoN application can be incorporated as a service within the AIS network environment.

The AtoN application often runs on the MariWeb™ BSC that is protected by various security, software and hardware watchdogs ensuring that the system is reliable.

The construction ensures a high Mean Time Between Failure [MTBF] and a low Mean Time To Repair [MTTR].