Submarine networks have demonstrated its importance for global communications, especially global internet which requires huge capacity. On the other hand, the whole submarine networks are still quite vulnerable, though there is increasing enhancement on diversity, redundancy and protection. Submarine cable cut occurs from time to time arround the world. Trawl fishing, vessel anchoring, nature disaster such as earthquake, typhoon and landslide are the main threats to the submarine networks.
The submarine networks are robust enough to cope with a single undersea cable cut or multiple cuts on one single undersea cable, in which case the traffic and service can be almost protected or restored. And the cable repair can be completed within couple of weeks normally.
Multiple cable cuts on multiple undersea cables within the same short period disorder the submarine networks from time to time. And the whole industry, the operators, the investors and the governors need to work together to enhance the diversity, redundancy and resiliency of the submarine networks which are so importance to the global life and business.
Significant Cable Cuts
- October 4, 2011, AAG cable cut between La Union in the Philippines and Lantau in Hong Kong.
- March 11, 2011, Submarine Cables Cut after Magnitude-8.9 Earthquake and Tsunami in Japan, APCN-2, China-US CN, Japan-US CN, EAC and PC-1 were cut, Kita Ibaraki cable landing station and Ajigaura cable landing station were isolated from the submarine networks.
- August 9, 2009, Submarine Cables Cut by Taiwan Earthquake and Typhoon Morakot, APCN, APCN-2, C2C, EAC, FNAL/RNAL, China-US CN and SMW3 were cut, operators in Mainland China, Taiwan, Hong Kong, Singapore and other Asian countries were impacted, newly built Trans-Pacific Express (TPE) and TGN Intra-Asia cable systems contributed much for the immediate restoration. The impact is much moderate compared with the multiple cable cuts in Taiwan coast in 2006.
- December 19, 2008, Undersea Cable Cuts in the Mediterranean Affected 14 Countries, one of the most significant cable cuts, SEA-ME-WE 3 (SMW3), SEA-ME-WE 4(SMW4) and FLAG FEA undersea cables were cut by an anchoring vessel, 14 countries in the Mediterranean, Persian Gulf and South Asia were impacted, Maldives lost 100% of its traffic.
- February 29, 2008,Indonesian Internet capacity down to 10% due to Cable Cut between Jakarta-Singapore.
- January 23-February 5, 2008, Submarine Cable Cuts in Jan-Feb, 2008 in the Persian Gulf and the Mediterranean, multiple cable cuts on FLAG Europe-Asia, FALCON, SEA-ME-WE 4 in the Persian Gulf and the Mediterranean regions. The cable cuts called into doubt the safety of the undersea portion of the Internet cable system.
- December 26, 2006, Submarine Cables Cut after Taiwan Earthquake in Dec 2006, one of the most significant cable cuts, 18 cuts on APCN, APCN-2, C2C, EAC,FLAG FEA, FNAL/RNAL, China-US CN and SMW3. The importance of submarine networks to daily life and business were unanimously recognized. The cable cuts called into concerns and solutions on the safty and resiliency of submarine networks.
- March, 9, 2001, China-US Cable Break Down Internet, China Telecom lost most of its data capacity to the USA due to double cable cuts on China-US CN.