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| South East Asia–Middle East–Western Europe 3 (SEA-ME-WE 3) | |
|---|---|
| Name | South East Asia–Middle East–Western Europe 3 (SEA-ME-WE 3) |
| Type | Fibre-optic submarine cable |
| First operation | 1999 |
| Length | 39200 km |
| Owners | Consortium of carriers and operators |
| Capacity | Initially 40 Gbit/s, upgraded |
South East Asia–Middle East–Western Europe 3 (SEA-ME-WE 3) SEA-ME-WE 3 is a long-haul submarine communications cable system linking Tokyo, Singapore, Mumbai, Dubai, Alexandria, Istanbul, Naples, and London via branching units and landing stations, providing intercontinental connectivity between East Asia, South Asia, Middle East, and Western Europe. Commissioned in the late 1990s, the system involved multinational carriers including BT Group, France Télécom, NTT Communications, SingTel, and Deutsche Telekom in a consortium model common to global submarine cable projects such as FLAG, SEA-ME-WE 4, and SAFE. The network underpins international Internet and telecommunication links used by major operators like AOL, Microsoft, Google, and regional providers including Reliance Communications and Etisalat.
SEA-ME-WE 3 was designed to provide high-capacity backbone connectivity between hubs such as Kuala Lumpur, Colombo, Karachi, Abu Dhabi, Suez, Naples, and Marseilles, connecting to terrestrial exchanges like London Internet Exchange, De-CIX, and international gateways used by enterprises including HSBC, BP, and Shell. Its deployment relied on equipment vendors and research organizations including Alcatel, Nokia Siemens Networks, Ciena, and standards bodies like the International Telecommunication Union and IEEE. The system intersects geopolitical corridors involving states such as India, Pakistan, Egypt, Italy, and France and interacts with projects like Trans-European networks and initiatives by the European Commission.
The cable's principal route extends from NSW-adjacent landing points near Tokyo Bay westward through branching units to landing stations at Changi Beach, Kuantan, Cochin, Karachi, Fujairah, Jeddah, Suez Port, Alexandria, Marina di Carrara, and Bude before terminating near Paddington-area facilities in London. Each landing required coordination with local authorities such as the Maritime and Coastguard Agency in the United Kingdom, the Maritime Safety Administration in Japan, and port administrations in Egypt and Italy, and integration with metropolitan exchanges like LINX and AMS-IX.
SEA-ME-WE 3 uses optical fibre pairs in a cable sheath with submerged repeaters powered via conductor running the length, employing dense wavelength-division multiplexing technologies standardized in forums like ITU-T and implemented by vendors meeting ROHS and ISO 9001 quality regimes. Initial design capacity was in the order of 40 Gbit/s, with upgrades to multiple Tbit/s through wavelength upgrades and submarine line terminal equipment from Alcatel-Lucent and Huawei Marine. The system uses branching units, wet-mateable connectors, and landing station equipment conforming to GR-326 and GR-20-like specifications and relies on optical amplification techniques pioneered in research at Bell Labs and Corning Incorporated.
Conceived during the late 1990s telecom expansion era alongside projects such as TAT-14 and SEA-ME-WE 4, SEA-ME-WE 3 involved carriers from Japan, Singapore, India, Pakistan, Saudi Arabia, Egypt, Greece, Italy, France, and the United Kingdom forming a consortium to fund construction by suppliers including Fujitsu and Pirelli Cavi. Political and commercial negotiations referenced precedents like the Cable & Wireless arrangements and international agreements observed by the International Maritime Organization. Commercial operations began around 1999, following testing algorithms and commissioning procedures similar to those used for FLAG Europe-Asia.
Day-to-day operation is coordinated by a consortium operations center and by national landing station operators such as BT, France Télécom Orange, NTT, and Telecom Italia Sparkle, with maintenance routing and fault management using network management systems from Cisco Systems, Juniper Networks, and Ciena. Repairs require cable ships and specialists from firms like Telecom Qatar, Global Marine Systems Limited, and SubCom, conducting cable burial, grapnel recovery, and shore-end replacements, often in coordination with port authorities and navies such as the Royal Navy, Indian Navy, and Japan Maritime Self-Defense Force when security or territorial waters issues arise.
Upgrades increased capacity to multi-terabit levels through DWDM, coherent optics, and transponder replacements, paralleling innovations by Nokia, Ericsson, and Huawei. SEA-ME-WE 3 experienced incidents including fiber cuts attributed to ship anchors, seismic events near the Sumatra region, and outages coinciding with regional tensions involving Syria and Iran, prompting rerouting through systems like EIG and I-ME-WE. Notable outages affected connectivity for carriers such as AT&T, Vodafone, Orange S.A., and T-Mobile customers, prompting resilience measures including diverse routing, submarine cable protection zones, and investment by development banks like the World Bank in regional infrastructure resilience.
Ownership is via a consortium model with shareholders drawn from national telecoms and private carriers, similar to frameworks used by PCCW, SingTel, and Telstra. Governance relies on consortium agreements referencing arbitration under institutions such as the International Chamber of Commerce and dispute-resolution clauses informed by UNCITRAL principles. Strategic decisions have involved state-owned operators like BSNL, Telekom Malaysia, and Etisalat alongside commercial carriers, with interconnection governed by commercial settlement frameworks used on platforms like the London Internet Exchange and regulatory oversight by agencies including Ofcom, TRAI, and the National Telecommunications Authority of participating states.
Category:Submarine communications cables Category:International telecommunications