SAT-3/WASC or South Atlantic 3/West Africa Submarine Cable is a

submarine communications cable A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables laid beginning in the 1850s carried tel ...

linking

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of th ...

and

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = '' Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring coun ...

, with connections to several

West Africa West Africa or Western Africa is the westernmost region of Africa. The United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali ...

n countries along the route. It forms part of the SAT-3/WASC/SAFE cable system, where the

SAFE A safe (also called a strongbox or coffer) is a secure lockable box used for securing valuable objects against theft or fire. A safe is usually a hollow cuboid or cylinder, with one face being removable or hinged to form a door. The body and ...

cable links South Africa to

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an are ...

. The SAT-3/WASC/SAFE system provides a path between Asia and Europe for telecommunications traffic that is an alternative to the cable routes that pass through the

Middle East The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabian Peninsula, Arabia (including the Arabian Peninsula and Bahrain), Anatolia, Asia Minor (Asian part of Turkey except Hatay Pro ...

, such as SEA-ME-WE 3 and

FLAG A flag is a piece of fabric (most often rectangular or quadrilateral) with a distinctive design and colours. It is used as a symbol, a signalling device, or for decoration. The term ''flag'' is also used to refer to the graphic design empl ...

. SAT-3 has a capacity of 340

Gbit/s In telecommunications, data-transfer rate is the average number of bits ( bitrate), characters or symbols ( baudrate), or data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are mu ...

while SAFE has a capacity of 440 Gbit/s. The SAT-3 system together with SAFE was built by a consortium of operators . As of 2006, major investors included Telkom Group (about 13%),

France Telecom Orange S.A. (), formerly France Télécom S.A. (stylized as france telecom) is a French multinational telecommunications corporation. It has 266 million customers worldwide and employs 89,000 people in France, and 59,000 elsewhere. In 2015, ...

(12.08%),

Nitel Nigerian Telecommunications Limited (NITEL), was a monopoly telephone service provider in Nigeria until 1992 when the Nigerian government enacted the Nigerian Communications Commission act allowing new entrants into the telecommunications secto ...

(8.39%); TCI, a subsidiary of AT&T Inc. (12.42%); and

VSNL Tata Communications Limited (previously known as Videsh Sanchar Nigam Limited) is an Indian telecommunications company. It was previously a government- owned-telecommunications service provider and under the ownership of Department of Teleco ...

(8.93%).

Bandwidth costs

Prices for SAT-3 bandwidth in the African countries it serves are high ( US$4,500–12,000 per Mbit/s per month, over 50 times greater than bandwidth prices in the U.S.) in large part because operators have monopoly control of access. The lowest rates occur in

Ghana Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in the west, Burkina Faso in the north, and Tog ...

, where the Ghana Internet Service Providers Association (GISPA) organized a two-year negotiation with a court fight against Ghana Telecom. SEACOM president Brian Herlihy states that the owners of the SAT-3 cable have cut prices by 50% since the 2007 announcement of Seacom, in order to compete with the arrival of Seacom in

East Africa East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territories make up Eastern Africa: Due to the historica ...

Landing points

The SAT-3 has landing points in European countries: #

Sesimbra Sesimbra () is a municipality of Portugal, in the Setúbal District, lying at the foothills of the ''Serra da Arrábida'', a mountain range between Setúbal and Sesimbra. Due to its particular position at the Setúbal Bay, near the mouth of the S ...

Chipiona Chipiona is a town and municipality located on the Atlantic coast in the province of Cádiz, Spain. According to the 2012 census, the city has a population of 18,849 inhabitants, but this amount increases greatly during the summer holiday peri ...

(though this landing is considered to be part of the Telefónica domestic network) # Alta Vista in

Las Palmas Las Palmas (, ; ), officially Las Palmas de Gran Canaria, is a Spanish city and capital of Gran Canaria, in the Canary Islands, on the Atlantic Ocean. It is the capital (jointly with Santa Cruz de Tenerife), the most populous city in the auto ...

Canary Islands The Canary Islands (; es, :es:Canarias, Canarias, ), also known informally as the Canaries, are a Spanish Autonomous communities of Spain, autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to ...

and in

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

: #

Dakar Dakar ( ; ; wo, Ndakaaru) (from daqaar ''tamarind''), is the capital and largest city of Senegal. The city of Dakar proper has a population of 1,030,594, whereas the population of the Dakar metropolitan area is estimated at 3.94 million in 2 ...

Senegal Senegal,; Wolof: ''Senegaal''; Pulaar: 𞤅𞤫𞤲𞤫𞤺𞤢𞥄𞤤𞤭 (Senegaali); Arabic: السنغال ''As-Sinighal'') officially the Republic of Senegal,; Wolof: ''Réewum Senegaal''; Pulaar : 𞤈𞤫𞤲𞤣𞤢𞥄𞤲𞤣𞤭 ...

Abidjan Abidjan ( , ; N’ko: ߊߓߌߖߊ߲߬) is the economic capital of the Ivory Coast. As of the 2021 census, Abidjan's population was 6.3 million, which is 21.5 percent of overall population of the country, making it the sixth most populous city p ...

Côte d'Ivoire Ivory Coast, also known as Côte d'Ivoire, officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital is Yamoussoukro, in the centre of the country, while its largest city and economic centre ...

Accra Accra (; tw, Nkran; dag, Ankara; gaa, Ga or ''Gaga'') is the capital and largest city of Ghana, located on the southern coast at the Gulf of Guinea, which is part of the Atlantic Ocean. As of 2021 census, the Accra Metropolitan District, , ...

Cotonou Cotonou (; fon, Kútɔ̀nú) is a city in Benin. Its official population count was 679,012 inhabitants in 2012; however, over two million people live in the larger urban area. The urban area continues to expand, notably toward the west. The ci ...

Benin Benin ( , ; french: Bénin , ff, Benen), officially the Republic of Benin (french: République du Bénin), and formerly Dahomey, is a country in West Africa. It is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the nort ...

Lagos Lagos (Nigerian English: ; ) is the largest city in Nigeria and the second most populous city in Africa, with a population of 15.4 million as of 2015 within the city proper. Lagos was the national capital of Nigeria until December 1991 fo ...

Nigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf o ...

Douala Douala is the largest city in Cameroon and its economic capital. It is also the capital of Cameroon's Littoral Region. Home to Central Africa's largest port and its major international airport, Douala International Airport (DLA), it is the com ...

Cameroon Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west-central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; the ...

Libreville Libreville is the capital and largest city of Gabon. Occupying in the northwestern province of Estuaire, Libreville is a port on the Komo River, near the Gulf of Guinea. As of the 2013 census, its population was 703,904. The area has been in ...

Gabon Gabon (; ; snq, Ngabu), officially the Gabonese Republic (french: République gabonaise), is a country on the west coast of Central Africa. Located on the equator, it is bordered by Equatorial Guinea to the northwest, Cameroon to the nort ...

# Cacuaco,

Angola , national_anthem = "Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordinat ...

# Melkbosstrand,

meeting

Although Telecom Namibia holds ownership in SAT-3/WASC, Namibia has no landing point. Namibian internet users currently have no access to SAT-3/WASC, because Telecom Namibia would have to purchase capacity from

Telkom SA Telkom SA SOC Limited is a South African wireline and wireless telecommunications provider, operating in more than 38 countries across the African continent. Telkom is majority state-owned (55.3%) with the South African government owning 40.5 ...

, and due to Telkom SA's high prices has so far refused to do so.

Technology

The cable itself consists of four fibers, using

Erbium-doped fiber amplifier An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from ...

repeaters and

wavelength division multiplexing In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. This techniqu ...

History

SAT-3/WASC/SAFE began operations in 2001, providing the first links to Europe for West African internet users and, for South Africans, taking up service from SAT-2 which was reaching maximum capacity. SAT-2 had been brought into service in the early 1990s as a replacement for the original undersea cable SAT-1 which was constructed in the 1960s. In November 2007, no internet access was available through SAT-3 for about seven days in parts of central Africa. A government official from Cameroon blamed a technical failure at the underwater SAT-3 high sea fibre optic terminal, about forty kilometres from Douala. Many ISPs in Cameroon had transitioned their connections from independent satellite connections to SAT-3 in mid-2007 creating serious communication difficulties during the seven days. In late July 2009, SAT-3 cable damage caused internet blackouts in multiple west African countries including

Togo Togo (), officially the Togolese Republic (french: République togolaise), is a country in West Africa. It is bordered by Ghana to the west, Benin to the east and Burkina Faso to the north. It extends south to the Gulf of Guinea, where its c ...

Niger ) , official_languages = , languages_type = National languagesNigeria Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf o ...

. Togo and Niger were "completely offline" and Benin was able to "reroute its net traffic through neighboring countries." However, the three nations were able to use alternative satellite links in order to maintain some Internet communication with the rest of the world. Nigeria suffered a 70% loss of bandwidth that caused problems in banking, government and other mobile networks. President of the Nigeria Internet Group, Lanre Ajayi, said, " he cable isa critical national resource because of its importance to the economy and to security." Two weeks may pass before the cable is fixed.Cable fault cuts off West Africa

BBC News BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs in the UK and around the world. The department is the world's largest broadc ...

. July 30, 2009.

References

External links