A cable landing point is the location where a submarine or other underwater cable makes landfall. The term is most often used for the landfall points of submarine telecommunications cables and submarine power cables. A submarine communications cable is a cable laid beneath the sea to carry Telecommunications between countries Submarine power cables are cables for electrical power running through the sea below the surface The main cable is joined to a side cable (in the case of telecommunications this is via a submarine branching unit). A Submarine Branching Unit is a piece of equipment used in submarine telecommunications cable systems at Cable landing points to allow the cable to split to serve more

Cable landing points are usually carefully chosen to be in areas:

1. that have little marine traffic to minimise the risk of cables being damaged by ship anchors and trawler operations;
2. with gently sloping, sandy or silty sea-floors so that the cable can be buried to minimise the chance of damage;
3. without strong currents that would uncover buried cables and potentially move cables.

Such locations are rare, and will usually be the shared landfall point for several cable systems. Examples are:

• Widemouth Bay, near Bude in Cornwall, the UK, where several submarine telecommunications cables come ashore:
  • Apollo (North)
  • TAT-8
  • TAT-14
  • Yellow (AC2)
• Blaabjerg, Denmark, where the following cables come ashore:
  • CANTAT-3
  • ODIN
  • TAT-14
  • UK-Denmark 4
• Changi, Singapore, where the following cables come ashore:
  • APCN
  • ASEAN
  • C2C
  • TIISCS
  • TIS

Frequently, there will be a nearby cable landing station, or cable termination station, which may well be shared between multiple cable systems, but in some cases, the cable may be laid many miles inland before reaching its termination point. Widemouth Bay is a bay and Beach on the Atlantic coast of Cornwall, England, UK, approximately 3 Miles (5 Km Bude (Bud is a small seaside resort town in North Cornwall, England, United Kingdom, at the mouth of the River Neet Cornwall ( Kernow ˈkɛɹnɔʊ is the most southwesterly county of England, on the Peninsula that lies to the west of the River Tamar The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located TAT-8 was the 8th Transatlantic telephone cable,initially carrying 40000 telephone circuits (simultaneous calls between USA, England and France TAT-14 is the 14th consortia Transatlantic telephone cable system Yellow / AC-2 ( Atlantic Crossing 2) is a submarine telecommunications cable system linking the USA and the UK Until January 1, 2007, Blaabjerg was a municipality ( Danish, kommune) in Ribe County on the west coast of the Jutland The Kingdom of Denmark ( ˈd̥ænmɑɡ̊ (archaic ˈd̥anmɑːɡ̊ commonly known as Denmark, is a country in the Scandinavian region of northern Europe CANTAT-3 is the third Canadian Transatlantic telephone cable, in operation from 1994, initially carrying 3 x 2 ODIN is a submarine telecommunications cable system linking The Netherlands, Denmark, Norway, and Sweden. TAT-14 is the 14th consortia Transatlantic telephone cable system Changi is an area at the eastern end of Singapore. It is now the site of Singapore Changi Airport, and is also home to the Changi Prison, site of the former Singapore The ASEAN cable system was a submarine telecommunications cable system linking Indonesia, Malaysia, Singapore, Thailand and the C2C is a submarine telecommunications cable system comprising three rings C2C North Ring C2C South Ring C2C Pacific Ring TIISCS (Tata Indicom India-Singapore Cable System also known as TIC (Tata Indicom Cable is a Submarine telecommunications cable linking India and TIS ( Thailand-Indonesia-Singapore) is a submarine telecommunications cable system in the South China Sea linking Thailand Singapore and Indonesia

A cable landing station may or may not be required, depending on whether, for example, the submarine cable requires power to power submarine repeaters or amplifiers. The voltages applied to the cables can be high—3,000 to 4,000 volts for a typical trans-Atlantic telecommunications cable system, and 1,000 volts for a cross-channel telecommunications cable system. Submarine power cables can operate at many kilovolts: for example, the Fenno-Skan power cable operates at 400 kV. Fenno-Skan is the designation of the high voltage direct current transmission between Dannebo in Sweden and Rauma in Finland, inaugurated

A cable termination station is the point at which the submarine cable connects into the land-based infrastructure or network. A cable termination station may be the same facility as the cable landing station, or may be many miles away. The termination station will usually be the point where high-capacity 'backhaul' land-based network connects to areas of high demand, which are usually centres of high population density, rather than the usually remote locations of cable landing points/landing stations/termination stations.

External links

• Comprehensive list of cable landing sites globally
• List of international submarine communications cables
• List of domestic submarine communications cables

This is a list of international Submarine communications cables and does not include domestic cable systems, such as those on the coastlines of China Italy and Brazil This is a list of domestic Submarine communications cables and does not include international cable systems.

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