The Naf River Exposes a Gap in Bangladesh’s Maritime Strategy

The Naf River forms part of the Bangladesh-Myanmar border near Teknaf and Shah Porir Dwip. It is also a working fishing area. Because the water is shallow and the boundary is not clearly marked, boats can cross without intending to. This creates both security and navigation problems.

The article reports that the Arakan Army used fast boats in these waters to detain fishermen. In April 2025, it operated inside Bangladeshi waters and seized 23 fishermen near Saint Martin’s Island. The BGB said many Bangladeshi fishermen entered Myanmar waters accidentally, showing how easily the unclear boundary can be crossed.

Patrolling such an area requires frequent local surveillance, fast boats, and quick decisions. Large naval ships cannot efficiently watch every shallow channel. The article therefore stresses reliable information-sharing and a clear command structure. New equipment alone will not solve the problem unless agencies build a common picture of activity on the Naf and respond rapidly.

The article presents the Arakan Army as an armed group operating around the Myanmar-Bangladesh border. It has become involved in maritime security by detaining fishermen near the Naf River and nearby coastal waters. Its actions have affected both Bangladeshi citizens and Rohingya refugees living in Bangladesh.

The group used fast boats in shallow, unmarked waters. In April 2025, it crossed into Bangladeshi waters and seized 23 fishermen near Saint Martin’s Island. In August 2026, it detained three Bangladeshi fishermen near Shah Porir Dwip. Eleven days later, BGB personnel received 24 other fishermen from the group at the Naf River’s zero line.

These incidents show why Bangladesh’s traditional naval planning has not fully addressed the immediate danger. The navy was built mainly to deter another state’s forces. The Arakan Army creates a smaller, faster, and harder-to-track threat. Preventing further detentions requires coastal surveillance, rapid intervention, and coordinated action among the Navy, Coast Guard, and BGB.

Between January 2025 and August 2026, the Arakan Army detained 434 fishermen, according to BGB figures. The total includes people caught at different times near the Bangladesh-Myanmar border. The scale shows that the problem was repeated and sustained, rather than a single border incident.

Of those detained, 222 were Bangladeshi citizens and 212 were Rohingya refugees living in Bangladesh. By August 2026, 86 fishermen remained in the group’s custody. The figures cover people detained in or around the Naf River and nearby waters, where fishing boats operate close to an unclear boundary.

The numbers underline the gap between Bangladesh’s major naval investments and the protection available to small fishing communities. Releasing fishermen has often required BGB involvement, while coastal monitoring falls under the Coast Guard’s legal responsibility. Without shared information and a clear response chain, authorities may learn about incidents too slowly to prevent detentions or secure releases quickly.

Bangladesh invested in naval power because its maritime boundary disputes created a newly secure area to defend. It won its case against Myanmar in 2012 and arbitration against India in 2014. The rulings gave Dhaka a clear maritime domain after independence. A stronger navy could help protect that domain and deter foreign naval pressure.

The immediate strategic memory was the 2008 standoff with Myanmar. Myanmar naval vessels escorted survey ships into waters claimed by both countries, and Bangladesh responded by sending warships. Under Forces Goal 2030, more than 30 new warships joined the fleet after 2009. Bangladesh also acquired two refurbished Chinese submarines and built a submarine base at Pekua.

That investment made sense against a conventional naval threat. Yet the article argues that the danger now affecting ordinary fishermen is different. The Arakan Army uses fast boats in shallow waters, where submarines and large warships are not practical. Bangladesh therefore needs to pair naval strength with Coast Guard patrols, surveillance, and coordinated coastal security.

The Naf River presents a very different challenge from open-sea naval warfare. Its waters are shallow, poorly marked, and crossed by small fishing boats. The Arakan Army uses fast boats that can maneuver through this difficult environment. The main need is to detect and stop small craft quickly, not to fight an enemy fleet.

Submarines provide little protection against such incursions because they are designed for underwater operations, not routine monitoring of crowded, shallow estuaries. Frigates are also a poor fit. The article calls it a waste of naval resources to deploy them to watch small boats in a shallow estuary. Their size and mission are mismatched to the local problem.

The better response is a layered coastal system. Regular patrols can provide a visible presence. Reliable surveillance can identify suspicious movement. Fast boats can intervene. A clear chain of command can turn information into action. New Coast Guard patrol vessels, high-speed boats, and drones may help, but only if agencies share data and coordinate their response.

When the Navy, Coast Guard, and BGB lack shared information and a clear command chain, border incidents become harder to detect and manage. Authorities may not know quickly that fishermen have been taken. They may also disagree about who should respond. This creates delays while small boats and abducted fishermen move through the border area.

The article describes a divided system. The Coast Guard legally monitors coastal waters, but it belongs to the Home Ministry, while its personnel come from the Navy, which belongs to the defense establishment. The BGB has taken the lead in securing detained fishermen. Ministries also hold data that has not yet been integrated for sharing.

The result is an avoidable gap between capability and action. Bangladesh may possess patrol vessels, drones, and naval ships, yet still struggle to produce a timely response. The article calls for faster information flow, regular patrols, and a common operational picture. Clear authority would help agencies protect fishermen and respond consistently to incursions.

Maritime domain awareness is the ability to build a reliable, shared picture of activity across a country’s waters. It combines surveillance, information-sharing, and decisions about who responds. In the Naf area, this matters because fishing boats, border crossings, and hostile fast boats can appear in shallow waters where the boundary is unclear.

The article describes the mechanism plainly. Surveillance must detect movement. Information must reach authorities quickly. A clear chain of command must then direct the right agency to intervene. If ministries keep separate data, agencies can face gaps or duplication. A large navy cannot compensate for missing or delayed information at the local level.

Bangladesh has invested in Coast Guard personnel, patrol vessels, high-speed boats, and three surveillance drones. Those tools could improve awareness, but the article says capability development remains piecemeal. Protecting the maritime boundary will require a common operational picture of the Naf, coordinated patrols, and authority to act before fishermen are detained.