Matarbari Deep Sea Port

The Matarbari Deep Sea Port is being developed on a stretch of coast at Matarbari in the Maheshkhali upazila of Cox's Bazar district, southeastern Bangladesh, where dredging for an adjacent coal-fired power plant produced a navigable channel that engineers subsequently repurposed for commercial shipping. The project rests on bilateral foundations rather than a multilateral treaty: it is financed through the Japan International Cooperation Agency (JICA) under successive Official Development Assistance (ODA) loan tranches extended on concessional terms, and it is executed by the Chattogram Port Authority under the Bangladesh Ministry of Shipping. The undertaking is anchored conceptually in Japan's Bay of Bengal Industrial Growth Belt (BIG-B) initiative, articulated during Prime Minister Shinzo Abe's engagement with Bangladesh from 2014, which envisions an integrated corridor of port, power, and industrial infrastructure along the Chattogram–Cox's Bazar coast.

Procedurally, the port emerged as a derivative of the Matarbari Ultra Super Critical Coal-Fired Power Project, for which a deep channel and breakwaters were dredged to allow large coal carriers to berth. Bangladeshi authorities recognised that a channel of roughly 18.5 metres' depth and around 14.3 kilometres in length could accommodate vessels far larger than those served by the existing Chattogram or Mongla ports, which are constrained by shallow draft and tidal access. The Chattogram Port Authority accordingly commissioned a separate deep sea port component, with JICA-funded feasibility studies, detailed design, and phased loan agreements covering channel deepening, multipurpose and container terminals, breakwater extension, and connecting road and rail links to the national network.

The construction sequence proceeds in distinct phases. The initial phase concentrates on a multipurpose terminal and a container terminal capable of handling vessels of approximately 8,000 twenty-foot equivalent units (TEU), together with the extension of the existing channel and protective breakwaters. Land reclamation, terminal yard construction, and the building of a dedicated access corridor linking Matarbari to the Dhaka–Chattogram–Cox's Bazar transport spine constitute parallel workstreams. Contractors selected through JICA-tied procurement, drawn substantially from Japanese and allied engineering firms, undertake the marine works, while operational management is structured to fall under Bangladeshi port authority control once terminals are commissioned. The port is designed to handle drafts of around 16 metres at berth, a capability no other Bangladeshi facility possesses.

By the mid-2020s the project had become a centrepiece of high-level diplomacy between Dhaka and Tokyo. During the April 2023 visit of Prime Minister Sheikh Hasina to Japan, the two governments reaffirmed the Matarbari corridor within a broader strategic partnership framework, and Japan articulated a "Free and Open Indo-Pacific" vision that explicitly referenced Bay of Bengal connectivity through Matarbari toward India's northeast and onward to Southeast Asia. Japanese officials have described Matarbari as the maritime gateway of an envisaged corridor stretching to the Indian states of the northeast and ultimately to Myanmar and Thailand, positioning it as Tokyo's counterweight to Chinese-financed harbours in the region. Commissioning of the first terminals has been targeted for the latter half of the 2020s.

Matarbari must be distinguished from the adjacent and frequently conflated Payra Port, a separate Bangladeshi deepwater initiative in Patuakhali district developed with different financing, and from the long-shelved Sonadia Deep Sea Port proposal, which China had sought to finance before Dhaka set it aside around 2016 in favour of the Japanese-backed Matarbari scheme. It should also be separated from the existing Chattogram and Mongla ports, which are river-and-estuary facilities rather than open-coast deepwater harbours. The contrast with China's Belt and Road Initiative ports—Gwadar in Pakistan, Hambantota in Sri Lanka, Kyaukphyu in Myanmar—is central to the port's strategic reading: Matarbari represents Japanese and, by extension, Quad-aligned infrastructure financing as an alternative to Chinese maritime investment along the northern Indian Ocean rim.

Controversy surrounds the project on several axes. The cancellation of the Chinese-financed Sonadia plan in Matarbari's favour illustrated the geopolitical competition embedded in port selection and drew commentary about Bangladesh's balancing between Beijing, Tokyo, and New Delhi. Environmental groups have criticised the coal-power complex that birthed the channel, citing emissions, mangrove and ecological impacts in the Maheshkhali wetlands, and displacement of coastal communities; Bangladesh later scaled back parts of its coal expansion. Cost escalation, dredging-maintenance burdens, and questions about whether projected cargo volumes will materialise have featured in domestic budget debates. The corridor's value to India's landlocked northeast also hinges on transit arrangements that remain partly unrealised.

For the working practitioner, Matarbari is a concrete case study in connectivity diplomacy and the contest over Indian Ocean port infrastructure. Desk officers covering South Asia track it as evidence of Japan's deepening strategic footprint in Bangladesh and of Dhaka's careful hedging among major powers; analysts of the Indo-Pacific read it against the Quad's infrastructure agenda and against BRI maritime nodes. For Indian observers it bears on northeast connectivity and on the security of the Bay of Bengal littoral. Examination candidates and policy researchers should grasp its dual identity—a derivative of a power project that became Bangladesh's first true deepwater harbour—and its position at the intersection of development finance, energy policy, and great-power competition.