Aids to navigation play a vital role in ensuring the safety of marine navigation. CANS was selected to design, engineer, supply, install, test, commission and maintain a SCADA system to monitor lighthouses and light beacons scattered around the waters of Malaysia. The relative geographical inaccessibility and the fact that most of these aids to navigation are unmanned, required a robust and secure system to be deployed. The system consisted of RTUs which communicated to a central SCADA control centre. Report by exception and unsolicited reporting was supported. The points that were monitored include navigation light status, drive status, intrusion status and solar power system status. A variety of methods were used to transmit the data back to the control centre such as GSM, satellite, digital radio links and PSTN.