The Tonga Cable System is an international cable in the Pacific Ocean that spans 827 kilometers with landing points in Nuku’alofa, Tonga and Suva, Fiji. The Tonga Domestic Cable Extension is a 406-kilometer cable with three landing points in Tonga: Neiafu, Nukualofa and Pangai.
SubCom maintains these two cables in addition to 31 other systems as part of the South Pacific Marine Maintenance Agreement (SPMMA), which was signed in 2017 and covers the area from Singapore in the west to Tahiti in the east and from the southernmost point of New Zealand to Hawaii. This covers over 69,000 km of cable consisting of 33 data and power cable systems in the Pacific Ocean.