Subsea Cables & Internet Infrastructure

Satellite competes with terrestrial broadband because they are both access technologies. But all satellite networks generate traffic for the terrestrial backbones including the subsea cables. After all, there is little content stored in space! 😃 Hence satellite Internet providers must access data centers just like every other technology in the telecom world. Inter-satellite free space laser communication will bypass the terrestrial backbones to an extent, but this is really just a drop in the bucket. It works mostly for low bandwidth applications like email and instant messaging.  The graph shows the number of objects launched into low earth orbit from 1960 onward. This includes manned space craft, satellites, and unmanned spacecraft. Note that the dominant factor is SpaceX putting Starlink LEO satellites into orbit. As of January 2025, Starlink has 6,932 in space. In addition, Amazon Kuiper is deploying 3,236 LEO birds with the bulk of the fleet flying into orbit in 2025 and 2026...

This Newsweek article insinuates that China developed cable cutting technology detailed in a patent application in order to sabotage subsea cables. It is not stated explicitly. But that is clearly the conclusion the author wants the reader to reach. Yet the underlying logic has more holes than my mother's mole infested lawn. And that's a lot of holes. 😃  1. In order to lift a damaged fibre optic cable onto a ship for repair, it must be severed in most cases because there is usually not enough slack to hoist intact aboard a ship. Secondly, an intact cable weighs a lot and is more difficult to handle than pulling up one end of a severed cable. Hence cutting intact, but damaged cables prior to repair is protocol. So cable cutting technology is not per se evidence of intent to sabotage. 2. According to the patent application mainland China faced a problem with illegal cable laying in its territorial waters This is not as strange as it sounds. For example, the Thai police discove...

The planned Bulikala cable connects Google's modular prefabricated Guam CLS to Fiji. The branch is right below Guam on the map at the bottom of this page. It is part of a large scale Google project costing a billion dollars  to dramatically increase Pacific subsea throughput and resiliency via a web of island hopping fibre optic cables. These small islands such as Fiji, Christmas Island, the Marshalls, and Polynesia offer diverse network routing that is particularly valuable in case of a subsea cable segment goes dark. They also offer power, which is the gating factor for throughput over long distances. All power conductors lead to voltage drawdown which limits bandwidth. Boosting power at intermediate points will allow higher transmission rates and lead to better return on the capital invested. The overall plan is to connect Japan, Guam, Hawaii, many islands such as Fiji and French Polynesia to the US in such a way as to increase both throughput via power stops at small islands a...

This new subsea cable perfectly illustrates how these undersea digital highways have become instruments of political power and foreign policy. The Chinese government is lending the Cambodian government the money required to build a subsea cable that China Uncom will operate for Cambodia and which Hauwei Marine will undoubtedly build. Since it goes to Hong Kong China will probably tap the cable and record the bits traversing it. Now encryption protects the data payload, but not the header routing information. So the IP addresses can be captured and much can be deduced from them. Unfortunately, few details are available regarding the new network. The Chinese government clearly wants to be able to monitor and capture the region's data flows so subsidizing cables to land in China and to be built by Hauwei is in their eyes is simply prudent national security policy. 

Type of Cable System: Latest Generation Coherent Optics.  Open Cable System: Yes, and possibly the first for Southeast Asia.  Consortium Members: China Telecom, Singtel, Globe Telecom (Philippines), DITO (Philippines), Singtel, Malaysia Telecom, Global Transit, and UNN (Brunei).  Construction Status: On schedule.  Number of Fibre Pairs: 8.  Estimated RFS: 3Q2025. Day One Aggregate Throughput: 144 Tbps.  Salient Features: Three digit terabit cable between Singapore, China, HK, Malaysia, Vietname, and Philippines.  ALC connects Brunei, Hong Kong, Singapore, Philippines, and China. It is a 8 fibre pair system with minimum throughput per pair of 18 terabits per second. Hauwei Marine is building the system which should be ready for service 3Q2025. The project co-leads are Singtel and China Telecom. Hauwei's involvement will deter many foreign carriers from using the cable's transport services, but there are extensive commercial  ties and strong telecom...