- Cable landing point
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. The main cable is joined to a side cable (in the case of telecommunications this is via a submarine branching unit).
Cable landing points are usually carefully chosen to be in areas:
# that have little marine traffic to minimise the risk of cables being damaged by ship anchors and trawler operations;
# with gently sloping, sandy or silty sea-floors so that the cable can be buried to minimise the chance of damage;
# 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 Budein Cornwall, the UK, where several submarine telecommunications cables come ashore:
Blaabjerg, Denmark, where the following cables come ashore:
Changi, Singapore, where the following cables come ashore:
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.
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-Skanpower cable operates at 400 kV.
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.
* [http://www.kidorf.com/DBLandings.php Comprehensive list of cable landing sites globally]
List of international submarine communications cables
List of domestic submarine communications cables
Wikimedia Foundation. 2010.
Look at other dictionaries:
APCN (cable system) — APCN or Asia Pacific Cable Network is a submarine telecommunications cable system linking nine Asian countries.It has landing points in: *Petchaburi, Thailand *Mersing, Malaysia *Changi, Singapore *Ancol, Indonesia *Lantau, Hong Kong *Batangas,… … Wikipedia
Unity (submarine cable) — Unity is the code name for a Trans Pacific submarine communications cable in which Google is investing with other partners. Grahame Lynch [http://www.commsday.com/node/186 Google plans new undersea Unity cable across Pacific] . CommsDay.com.… … Wikipedia
Danice submarine cable — The DANICE submarine communications cable system transits 2250 km of the North Atlantic Ocean and the North Sea to connect Iceland and Denmark. It consists of four fibre pairs, capable of carrying in total up to 5.1 Tbit/s of data using… … Wikipedia
Submarine communications cable — A cross section of a submarine communications cable. 1 Polyethylene 2 Mylar tape 3 Stranded steel wires 4 Aluminium water barrier 5 Polycarbonate 6 Copper or aluminium tube 7 Petroleum jelly 8 Optical fib … Wikipedia
SAT-3/WASC (cable system) — SAT 3/WASC or South Atlantic 3/West Africa Submarine Cable is a submarine communications cable linking Portugal and Spain to South Africa, with connections to several West African countries along the route. It forms part of the SAT 3/WASC/SAFE… … Wikipedia
Knots Landing — Logo (Seasons 9–10) Format Soap opera Created by David Jacobs Starring … Wikipedia
Cedar Point — This article is about the amusement park in Ohio. For other uses, see Cedar Point (disambiguation). Cedar Point Location Sandusky, Ohio, USA Coordinates … Wikipedia
Knots Landing — Seriendaten Deutscher Titel: Unter der Sonne Kaliforniens Originaltitel: Knots Landing Produktionsland: USA Produktionsjahr(e): 1979–1993 Episodenlänge: etwa 45 Minuten … Deutsch Wikipedia
Southern Cross Cable — The Southern Cross Cable, operated by a company named Southern Cross Cables Limited, is a trans Pacific network of telecommunications cables commissioned in 2000.The network has 28,900 km of submarine and 1,600 km of terrestrial fibre optic… … Wikipedia
Bemus Point, New York — Infobox Settlement settlement type = Village official name = Bemus Point, New York motto = Get to the Point… Bemus Point imagesize = 220px image caption = From right to left: The Village Casino, Stow Ferry landing, The Italian Fisherman and… … Wikipedia