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Topic: Submarine communications cable


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In the News (Fri 1 Jan 10)

  
  Submarine communications cable - Wikipedia, the free encyclopedia
A submarine communications cable is a cable laid beneath the sea to carry telecommunications between countries.
The speed of a signal through the conductor of a submarine cable is thus reduced.
While laying a transatlantic telephone cable was seriously considered from the 1920s, a number of technological advances were required for cost-efficient telecommunications that did not arrive until the 1940s.
en.wikipedia.org /wiki/Submarine_communications_cable   (1874 words)

  
 YourArt.com >> Encyclopedia >> cable   (Site not responding. Last check: 2007-10-07)
A cable is two or more wires or optical fibers bound together, typically in a common protective jacket or sheath.
Cables can be securely fastened and organized, such as using cable trees with the aid of cable ties.
Octopus cable is a generic term for a cable that splits into several parts.
www.yourart.com /research/encyclopedia.cgi?subject=/cable   (251 words)

  
 Tinsley Precision Instruments Electroding Detector Model 5916   (Site not responding. Last check: 2007-10-07)
The Tinsley 5916 Electroding Detector is the ideal equipment for use on board ship when the electroding method is being employed for the detection of submarine cables buried or laid on the sea bed.
A signal in the range of 4 Hz to 40 Hz is transmitted down the submarine cable by an Electroding Generator such as the Tinsley type 5915 unit.
When the ship is in the vicinity of the cable area, the 5915 Electroding Generator is powered thus applying the low frequency signal to the cable under test.
www.tinsley.co.uk /5916.htm   (806 words)

  
 Bend Cable   (Site not responding. Last check: 2007-10-07)
Cables may be made flexible by stranding, usually twisting or braiding.
Cable is generally used in reference to cabletelevision.
The term cable is sometimes used for the cable length, a non SI unit of measurement
www.daikaiju.com /edge/15529-bendcable.html   (249 words)

  
 Future Communications   (Site not responding. Last check: 2007-10-07)
Submarine communications were once limited to those necessary to communicate mission support information and the minimal command and control that a submarine previously required.
As submarines continue to conduct a variety of missions to include intelligence collection, Indications and Warning (I and W), anti-submarine warfare, anti-surface warfare, strike warfare, and mine warfare, they will have to be an integral part of networked sensors and platforms.
The vision is to allow submarines to communicate without the current restrictions of depth and speed and with sufficient bandwidth to maximize the effectiveness of data and intelligence collected by the submarine, such that real-time connectivity and reach-back is achieved.
www.chinfo.navy.mil /navpalib/cno/n87/future/communications.html   (230 words)

  
 Cable - QuickSeek Encyclopedia   (Site not responding. Last check: 2007-10-07)
One type of electric cable consists of a core protected by twisted wire strands and suitably insulated, especially when it is used to cross oceans undersea; a message transmitted by cable is known as a cablegram or cable.
The first permanent transatlantic cable was laid in 1866 by Cyrus West Field, although demonstrations of its possibility had been made in 1858.
The newest form of cable is the fiber-optic cable, developed in the 1970s.
cable.quickseek.com   (417 words)

  
 An Atlas of Cyberspaces - Cables and Satellites
KDD is a major telecommunications company and its submarine cable division is one of the leading contractors laying and maintaining cables around the world.
Cable & Wireless is global telecommunications carrier operating undersea cables in many different regions of the world.
The cable and satellite infrastructure of Teleglobe Inc., a global telecommunications corporation, as of November 1999.
www.cybergeography.org /atlas/cables.html   (781 words)

  
 Transatlantic telephone cable: Encyclopedia topic   (Site not responding. Last check: 2007-10-07)
A transatlantic telephone cable is a submarine communications cable (submarine communications cable: a submarine communications cable is a cable laid beneath the sea to carry telecommunications...
While the first transatlantic telegraph cable (transatlantic telegraph cable: cyrus field was the instigator of the laying of the first transatlantic telegraph cable...
All TAT cables are joint ventures between AT&T (AT&T: at&t (formerly an abbreviation for american telephone and telegraph) corporation is...
www.absoluteastronomy.com /reference/transatlantic_telephone_cable   (822 words)

  
 Transatlantic telegraph cable: Encyclopedia topic   (Site not responding. Last check: 2007-10-07)
Compare to the later transatlantic telephone cable (transatlantic telephone cable: a transatlantic telephone cable is a submarine communications cable that carries telephone...
The cable broke on the first day but was grappled and repaired, it broke again over the 'telegraph plateau,' nearly two statute miles (3200 m) deep, and the operation was abandoned for the year.
The weight of the new cable was 35.75 long hundredweight (hundredweight: A British unit of weight equivalent to 112 pounds) (4000 lb) per nautical mile (980 kg/km), or nearly twice the weight of the old.
www.absoluteastronomy.com /reference/transatlantic_telegraph_cable   (1647 words)

  
 Naval Technology - NSW - Fiber-Optic Submarine Cable Systems and Underwater Cables for the Offshore Industry
NSW is a leader in fiber-optic submarine communication cable systems and special cables for the offshore industry and other underwater and terrestrial applications.
Surplus fiber length in the cable's loose buffer tube mechanically decouples the cable's optical fiber from the cable structure.
NSW is not just a submarine cable and hardware manufacturer but acts as lead contractor for turnkey submarine cable systems for customers wishing to create undersea fiber-optic telecommunications networks.
www.naval-technology.com /contractors/cables/nsw   (781 words)

  
 chapter9
Thereafter, the cable design was improved, having a greater number of conductors, using new and better insulation and for protection from damage on the sea floor, the cable was covered with a series of spiral steel wires, forming an “armour.
The development of underwater cable communications circuits continues to be expanded with the widening of the spectrum of transmitted frequencies and the increase in the number of communication channels.
The appearance of communications satellites suspended further development of submarine cables for some time, but research, development and installation of these have since been reinitiated since it was discovered that submarine cables do not compete, but rather, supplement each other.
www.oceansatlas.org /unatlas/-ATLAS-/chapter9.html   (6096 words)

  
 Thermocouple Cable --> Info and Comparisons   (Site not responding. Last check: 2007-10-07)
Cables can be securely fastened and organized (''e.g.'' into cable trees) with the aid of cable ties.
Cable One provides cable service mostly to small rural communities in nineteen states in the midwestern, southern, and western US.
Cable One has swapped its California cable systems and customers with operations in Oregon and Utah belonging to the main US cable operator Comcast.
www.crashdatabase.com /computers/154/thermocouple-cable.html   (835 words)

  
 OFCC -Cable Locations   (Site not responding. Last check: 2007-10-07)
On July 9th, 1998, WCI Cable, Inc. entered into an historic cooperative agreement with Oregon fishermen outlining the duties and responsibilities of each in relation to a new fiber-optic communications cable to be laid in the Pacific Ocean just north of Rockaway Beach, Oregon.
The three Tyco cables landing in Oregon are part of a 'ring' of Tyco transpacific cables, which connect Oregon to east Asia and southern California.
The cables are covered under the terms of a fishing agreement between Tyco Telecommunications and the Oregon Fishermen’s Cable Committee.
www.ofcc.com /cable_locations.htm   (606 words)

  
 UnderWater Magazine: Inland Submarine Cable Laying
Other pieces of specialized cable handling equipment, such as cable highways, reel stands, and over-board chutes, were mounted on the assembled barge, which even carried a recompression chamber.
Divers were in the water prior to cable installation to investigate any objects along the route that were revealed during sub-bottom and side scan surveys.
During the cable installation, it was of utmost importance that the cable not become stretched or damaged in any way.
www.underwater.com /archives/arch/uw-wi94.02.htm   (839 words)

  
 Our Fleet | Tyco Telecommunications Marine Services
Many modern communications cable routes were planned with inputs from fishermen and other mariners, with the goal of sharing the seabed in harmony.
Cable breaks are expensive to fix, and the costs must be borne ultimately by the users of communications services.
Chartlets showing cable routes and other information about cables maintained by Tyco in various areas may be obtained by selecting from the menu on the left.
www.tycotelecom.com /marineservices/mariners_info.asp   (211 words)

  
 Tinsley Precision Instruments Submarine Cable Survey System Model 5930   (Site not responding. Last check: 2007-10-07)
The Tinsley Submarine Cable Survey System is designed for use by divers working in areas where it may not be practical to use an R.O.V..
With a low frequency electroding tone applied to the cable, the system can be used to locate cables buried beneath the seabed and to establish their burial depth.
Once the cable is precisely located the Sensing Unit is placed on the seabed at that point and a measurement of Burial Depth made.
www.tinsley.co.uk /5930.htm   (435 words)

  
 History of the Atlantic Cable&Submarine Telegraphy -
To cable historians, William Thomson, later knighted and eventually elevated to the peerage as Lord Kelvin, is a key figure in the field.
Thomson's introduction to the cable industry is a Connections story: In 1854, Astronomer Royal George Airy, hoping to use the new cross-Channel cables to synchronize astronomical observations between London and Paris, but discouraged by the fuzzy signals through the cables, asked telegraph engineer Latimer Clark to investigate the problem.
Faraday determined qualitatively that the cable was acting like a Leyden jar, storing electrical charge because of the proximity of the water to the insulated conductor and published a paper on the subject, but did not develope a rigorous theory.
www.atlantic-cable.com /Bibliography   (5662 words)

  
 APPENDIX B SUBMARINE COMMUNICATIONS SHORE INFRASTRUCTURE B.1 SHORE COMMUNICATIONS INFRASTRUCTURE
The submarine communications system is an end-to-end system with connectivity established between the submarine shipboard SCSS node and the submarine shore site communication facilities node.
Submarine shore site facilities have the capability to be either transmitters, receivers, or both depending on their function and use within the radio frequency spectrum.
To support the shift in submarine mission emphasis and to operate efficiently and cost effectively, the Submarine Operational Commander’s Command and Control facilities must be modernized and kept compatible with submarine shipboard and Joint Task Force C 2 systems.
www.fas.org /man/dod-101/navy/docs/scmp/part07.htm   (3038 words)

  
 Cable and Wire - Cable Wire
A 'cable ' is two or more wires or optical fibers bound together, typically in a common protective jacket or sheath.
Cable and Wire does not warrant or guarantee the accuracy or completeness of the content available on this Website.
Cable and Wire excludes all liability of any kind (including negligence) in respect of any third party information or other material made available on, or which can be accessed using, this Website.
www.cable-wire-qed.com   (590 words)

  
 Transatlantic telephone cable - QuickSeek Encyclopedia   (Site not responding. Last check: 2007-10-07)
A transatlantic telephone cable is a submarine communications cable that carries telephone traffic under the Atlantic Ocean between North America and Europe.
While the first transatlantic telegraph cable had been laid in 1858, by business man Cyrus Field, it had only operated for a month.
The TAT series of cables constitute a large percentage of all north Atlantic cables, All TAT cables are joint ventures between ATandT and one of several European telecom companies, e.g.
transatlantictelephonecable.quickseek.com   (254 words)

  
 Telephone Cable : Telecommuncations   (Site not responding. Last check: 2007-10-07)
See live article   Transatlantic telephone cable A transatlantic telephone cable is a submarine communications cable that carries telephone traffic under the Atlantic Ocean between North America and Europe.
While the first transatlantic telegraph cable had been laid in 1858 (Cyrus Field), it had only operated for a month.
See live article   Submarine communications cable A submarine communications cable is a cable laid beneath the sea to carry telecommunications between countries.
www.pgexchange.com /374-Telephone-Cable.html   (875 words)

  
 Submarine Cable Landfall
The exact route of the cables beyond this point is unknown, so the cable was "stopped" at this point and the destination shown.
The route of Submarine cables was determined from the Australian Hydrographic Office Hydrographic Charts.
The location listed as landfall is a 'best guess', based on the known landfall of submarine cables from Australia and the route on the AHO Charts.
www.marine.csiro.au /nddq/ndd_search.Browse_Citation?txtSession=249   (271 words)

  
 Submarine Optical Fiber Cables - Super Optical Guide   (Site not responding. Last check: 2007-10-07)
Both optical - fiber submarine cables are planned to be laid between Asia and...
submarine communications cable A submarine communications cable is a cable laid...
The optic fiber used in undersea cables is chosen for its exceptional...
www.superopticalguide.com /submarine-optical-fiber-cables.html   (531 words)

  
 [No title]   (Site not responding. Last check: 2007-10-07)
The cables must cross trenches, cliffs, mountains and faults, and in many places are buried beneath the ocean floor by cable plows, undersea tractors, trenchers and ROVs (Barth and Leben, 1999; Underwater Magazine, 2000).
The cable attaching the towfish to the survey vessel also serves to transmit the sonar information to a processing unit on the ship, where the images are plotted on paper or a monitor.
In deeper waters, where cable burial is not an issue, multibeam sonar (bathymetric) may be more useful as it would allow the installer to anticipate the lengths of fiber optic cable required as well as lengths of tow cables for the ROVs and other equipment.
www.personal.psu.edu /users/k/f/kfh122/Project3_report_files/Project3_report.html   (2156 words)

  
 Cable Adelphia   (Site not responding. Last check: 2007-10-07)
Adelphia Communications Corporation, named after the Greek word for "brotherhood", was the sixth largest US cable television operator before it filed for bankruptcy in 2002 due to internal corruption.
Although some argue that Adelphia's dramaticincreases in cable rates are unnecessary and unreasonable, others argue that it is necessary to temporarily issue the increasesat intervals to pull the company out of its bankrupt state.
Adelphia also appears to be keeping up with therecent changes in technology as it expands to offer such services as HDTV and TiVo equipped cable boxes, as well as upgrading their systems and cable boxes.
www.witchware.com /File/27821-Cable.Adelphia.Html   (452 words)

  
 More on 'Submarine Cable'.
In order to continue searching for the term submarine cable, a visit to the Connected Earth website is recommended.
This is a totally multi-media presentation, enabling you to choose from comprehensive narratives, more thorough research, pictures of artefacts in 3D, reminiscences in oral and written form from former telecommunications industry workers, short movies, and interactive animations or simple explanations of the way that things work.
Connected Earth is the place to further your exploration of the term submarine cable.
www.connected-earth.com /content/submarine_cable_1.html   (279 words)

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