Norte Conectado (Infovia 03)

Norte Conectado (Infovia 03): what this cable is

Norte Conectado (Infovia 03) is a stretch of Brazil's federal Norte Conectado program, which extends a fiber-optic backbone into the Amazon along riverbeds. This is not an ocean system but a subfluvial cable: fiber laid along the riverbed, where overland deployment through rainforest and channels is impossible. Infovia 03 is notable for running across the mouth of the Amazon, linking Belém (Pará state) with Macapá (Amapá state) and crossing one of the planet's most complex hydrographic nodes, the Marajó archipelago, the largest river island in the world.

The roughly 779 km route serves a group of municipalities and is delivered by the infrastructure administrator EAF (Entidade Administradora da Faixa), funded in part by proceeds from the 5G auction. Activation of the stretch began in 2024.

Geography and route

Infovia 03 runs through the delta and channels around the mouth of the Amazon, connecting Belém and Macapá and reaching towns of the Marajó archipelago: Ponta de Pedras, São Sebastião da Boa Vista, Curralinho, Bagre, Breves, Afuá. This is a territory where rivers serve as "roads" and many communities (including ribeirinhos, river dwellers) have historically had only satellite connectivity.

Part of the Norte Conectado program

Infovia 03 is one of the stretches of the Norte Conectado program, planned in total for roughly 13,200 km of subfluvial fiber, more than 70 settlements, and about 7.5 million Amazon residents. The stretches are built in stages and stitched into a single network; sibling segments, including Infovia 00 (Lower Amazon, Santarém to Macapá) and the western Infovia 02, form a shared northern-region backbone.

Technical specifications

• Type: subfluvial (riverbed) backbone.
• Route: Belém (Pará) to Macapá (Amapá), across the Marajó archipelago.
• Length: about 779 km of fiber.
• Funding: 5G auction proceeds; infrastructure owner EAF.
• Status: activation of the stretch began in 2024; delivered to the Ministry of Communications (MCom) as part of the Norte Conectado rollout.

Why Infovia 03 matters: digital inclusion at the mouth of the Amazon

The value of Infovia 03 is not international transit but the connection of an isolated, inherently aquatic region. For the Amazon mouth and Marajó this is basic digital infrastructure:

• river communities and towns move from satellite to fiber, changing latency and available capacity by an order of magnitude;
• it creates a real basis for telehealth, education, government services, and local business where proper internet did not exist before;
• the Belém-Macapá link strengthens the regional axis between two state capitals in the north of the country.

What is known and what is not yet disclosed

• Infovia 03 is a subfluvial stretch of Norte Conectado, Belém to Macapá via Marajó, about 779 km;
• funded through the 5G auction, owner is EAF, activation from 2024;
• it serves a group of municipalities at the mouth of the Amazon.

Not yet fully disclosed: the exact split of capacity among operators, segment-by-segment readiness dates, and a detailed channel map of the route.

Technically: what effect to expect

• Latency. Moving Marajó and delta towns from satellite to riverbed-and-terrestrial fiber means tens of milliseconds instead of geostationary delay.
• Capacity. Fiber removes satellite limits, enabling video, cloud, and proper access for schools and clinics.
• Resilience. For communities with a single satellite link, the river line becomes a qualitatively different anchor, though a delta route demands special attention to repair and the flood season.

Why this matters for GeoCables / monitoring weak points

Infovia 03 changes the availability topology of an entire aquatic region. Before it, the Amazon mouth and Marajó largely hung on satellite; after it, there is a riverbed-and-terrestrial backbone stitched into the rest of the Norte Conectado network.

For monitoring it is worth tracking latency dropping in delta towns as the stretch comes into service, the appearance of terrestrial BGP routes instead of satellite ones, line resilience in the flood season, and correlation between outages and nodes falling back to satellite.

Short conclusion

Norte Conectado (Infovia 03) is a subfluvial backbone at the mouth of the Amazon, linking Belém and Macapá across the Marajó archipelago. Its meaning is not transit but the fact that one of Brazil's most aquatic and isolated regions moves from satellite to fiber and joins the unified Norte Conectado network. What is interesting here is not the length, but how river-laid fiber connects an entire delta.

Sources

• RNP - EAF begins Infovia 03: fiber between Belém and Macapá
• Brazil Ministry of Communications (MCom) - Norte Conectado program and Infovia 03
• Agência Gov / TELETIME - activation and delivery of Infovia 03/04
• Notícia Marajó - laying fiber along the rivers of Marajó