Submarine power cableĪ submarine power cable is a transmission cable for carrying electric power below the surface of the water. If a submarine cable fault it is possible that internet services could cause disruption, but Internet is a decentralized network and when a node fails the information flow can re-route through other intact nodes and cables. What happens if submarine cable fault? There is a cable map around the world connecting all countries. You can see it better in our submarine cable map in 3D at top of the page. – The eighth and last layer, on the outside, polyethylene coating. – The seventh layer, a polyethylene terephthalate tape – The sixth layer, some braided steel wires. – The fifth layer, a waterproof aluminum barrier. – The fourth layer, a polycarbonate tube. – The third layer, a copper or aluminum tube. – The second layer, Vaseline that protects from water. There are up to eight layers in submarine cables, which we explain from the inside to the outside (contrary to the image that illustrates it) Everything around it is just layers and layers that protect it from breaking easily, waterproofing the entire cable or padding it. Although in photographs or images we can see them with a great thickness, the truth is that their diameter is approximately three centimeters. It will depend on the connection in question, but it is a fine and delicate material. In this post, you can see an interactive submarine cable map that you can use in a globe in 3D. In this case, they are much more affordable than the satellites themselves. They are options with many advantages over others such as satellites, for example. Virtually all communications today are made through submarine cables, more than 90% of them. Companies with global operations will pay the price for a divided internet, and geopolitical tensions in the subsea cable market could serve to make the situation even worse.Submarine cables allow us to transmit data through them to improve telecommunications services. Ultimately, internet infrastructure balkanization will have economic and social costs, for both autocracies and democracies. The division of the traditional internet into competing technospheres, each with their own views on technology standards and regulation, is termed the splinternet. The US’ decision to prevent Chinese companies from constructing and operating undersea cables with the US serves to increase the risk of internet fragmentation. While the US has not publicly provided evidence of its claims that the build-out of cables by Huawei Marine poses a cybersecurity risk, the concerns reflect increasing tensions over the control of geographic nodes that are crucial to global communication and geopolitical interests. The American intervention effectively torpedoed the project. Similarly, in 2021, the US warned against the participation of Huawei Marine Networks in a project to introduce undersea cables between Pacific islands. Finally, Huawei Marine Networks controls 10% of the subterranean internet cable market, according to the 2021 report by the Tony Blair Institute for Change. The third is Japan’s NEC, with over 300,000km of undersea internet cables worldwide. The second is US-based SubCom with over 200 networks. The first is Alcatel Submarine Networks, a subsidiary of Nokia, with over 650,000km of cables worldwide. The market is now dominated by four main suppliers. For example, in 2021 Meta announced plans to build the world’s highest capacity undersea cable between the US and Europe. Once the exclusive domain of telecoms companies, Big Tech companies like Facebook owner Meta, Google and Microsoft are now leading investors in undersea internet cables. As of May 2022, there are 436 submarine cables in service worldwide, stretching over 1.3 million kilometers, according to the Submarine Cable Map by TeleGeography. The undersea internet cable sector is growing exponentially due to skyrocketing demand for cloud solutions and lower latency.
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