TAT-14

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title: "TAT-14" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["transatlantic-communications-cables", "infrastructure-completed-in-2001", "bt-group-buildings-and-structures", "at&t-buildings", "deutsche-telekom", "vodafone-buildings-and-structures", "verizon", "sprint-corporation", "kpn", "orange-s.a.", "telenor", "level-3-communications", "kddi", "softbank-group", "telus", "telefónica", "rostelecom", "science-and-technology-in-cornwall", "tata-communications", "2001-establishments-in-europe", "2001-establishments-in-new-jersey", "2020-disestablishments-in-europe", "2020-disestablishments-in-new-jersey"] description: "Former transatlantic telephone cable" topic_path: "general/transatlantic-communications-cables" source: "https://en.wikipedia.org/wiki/TAT-14" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Former transatlantic telephone cable ::

::data[format=table title="Infobox Submarine communications cable"]

Field	Value
cable_name	TAT-14
map	Map TAT-14.png
owners	{{hlist
technology	Fiber optics with EDFA repeaters
design_capacity	9.38 Tbit/s
current_capacity	3.15 Tbit/s
length	15428 km
topology	Self-healing ring
first_use_date
decommissioning_date
::

| cable_name = TAT-14 | map =Map TAT-14.png | owners = {{hlist | BT Group | AT&T | Deutsche Telekom | Vodafone | Verizon Communications | Sprint Corporation | KPN | Orange S.A. | Telia Company | Telenor | Etisalat | Level 3 Communications | OTEGlobe | Singtel | KDDI | StarHub | SoftBank Group | Zayo Group | Telesur | Portugal Telecom | Slovak Telekom | Türk Telekom | TDC A/S | Tele2 | Telus | Tata Communications | Telefónica | BICS | Elisa | CYTA | Rostelecom | technology = Fiber optics with EDFA repeaters | design_capacity = 9.38 Tbit/s | current_capacity = 3.15 Tbit/s | length = 15428 km | topology = Self-healing ring | first_use_date =
| decommissioning_date = | landing_points = | Denmark Blaabjerg, Denmark | Germany Norden, Germany | Netherlands Katwijk, Netherlands | France St-Valery-en-Caux, France | UK Widemouth Bay, UK | United States TuckertonManasquan, New Jersey, United States TAT-14 was the 14th consortium transatlantic telecommunications cable system. In operation from 2001 to 2020,{{cite web | url = https://docs.fcc.gov/public/attachments/DA-20-369A1.pdf | title = Report No. SCL-00267 | publisher = Federal Communications Commission | date = 2020-04-02 | access-date = December 21, 2020 | quote = the TAT-14 submarine cable will be retired from service on December 15, 2020}} it used wavelength division multiplexing. The cable system was built from multiple pairs of fibres—one fibre in each pair was used for data carried in one direction and the other in the opposite direction. Although optical fibre can be used in both directions simultaneously, for reliability it is better not to require splitting equipment at the end of the individual fibre to separate transmit and receive signals—hence a fibre pair is used. TAT-14 used four pairs of fibres—two pairs as active and two as backup. Each fibre in each pair carried 16 wavelengths in one direction, and each wavelength carried up to an STM-256 (38,486,016 kbit/s as payload). The fibres were bundled into submarine cables connecting the United States and the European Union (United Kingdom, France, the Netherlands, Germany, and Denmark) in a ring topology.{{cite web | url=http://transition.fcc.gov/Bureaus/International/Orders/1999/da992042.txt | title=CABLE LANDING LICENSE | date=1999-10-01 | publisher=U.S. Federal Communications Commission | access-date=2013-08-09}}

By the time this cable went into operation, the expected long boom (term coined by Wired magazine) was already ending in the dot-com death. The overinvestment in transcontinental optical fiber capacity led to a financial crisis in private cable operators like Global Crossing.

In the diplomatic cables leak, it is revealed that the landing point in Katwijk, the Netherlands is included in a US Government list of critical infrastructure susceptible to terrorist attack.{{cite web | url=http://www.rtlnieuws.nl/nieuws/binnenland/vs-wijst-knelpunten-nederland-aan | title=VS wijst knelpunten Nederland aan | date=2010-12-06 | publisher=RTL Nieuws | language=nl | access-date=2013-08-09 | archive-date=2017-01-01 | archive-url=https://web.archive.org/web/20170101013425/http://www.rtlnieuws.nl/nieuws/binnenland/vs-wijst-knelpunten-nederland-aan | url-status=dead

Use of the cable was ceased on December 15, 2020, shortly after the Havfrue cable, whose main trunk also lands at Blaabjerg, was lit in November 2020. In 2021 the permanent dismantling of the system was begun.

Cable failure

In November 2003, TAT-14 suffered two breaks within weeks of each other, first on the southern link between the US and UK, then on the link between France and the Netherlands which had been providing redundant service to the UK via the northern link through Denmark, resulting in disruption to Internet services in the United Kingdom.{{cite news | url=https://www.zdnet.com/home-and-office/networking/cable-failure-hits-uk-internet-traffic-3039118125/ | title=Cable failure hits UK Internet traffic | first=Graeme | last=Wearden | date=2003-11-26 | work=ZDNet | access-date=2013-08-09}}{{cite web | url=http://www.webuser.co.uk/news/top-stories/376427/net-failure-hits-uk | title=Net failure hits UK | first=Andrew | last=Craig | date=2003-11-26 | publisher=webuser.co.uk | access-date=2013-08-09}}

On May 19, 2014, preliminary reports from hosting provider Digital Ocean suggested that TAT-14 was the cause for the disrupted services between the EU and the US.{{cite web | url=https://status.digitalocean.com/incidents/6782mtcjgxg9 | title=Network Outage in EU affecting AMS1 and AMS2 | date=2014-05-19 | publisher=DigitalOcean | access-date=2018-01-30}}

Decommissioning of the TAT-14

Subsea Environmental Services has removed and recycled the cable shore-ends in the U.S., U.K., France, Denmark and The Netherlands as well as the deep-water segments in the North Atlantic.

References

References

1. "TAT-14 General Committee". Sprint Corporation.
2. "TAT-14".
3. "About the TAT-14 Cable Network".
4. (2020-12-21). "Out With the Old Cables, in With the New".
5. (2021-05-11). "Upcoming Dismantling of the TAT-14 Submarine Cable System".
6. (2024-03-05). "Subsea Cable System".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::