Inland waterways are moving from potential to performance. Discuss the role of navigation infrastructure — hydrographic surveys, AtoN and digital platforms — in this shift.

Inland waterway cargo rose from 29 MMT in 2014–15 to 218 MMT in 2025–26. This is above the Maritime India Vision 2030 target of 200 MMT [1]. Navigation infrastructure drove much of this shift by making river transport predictable, safe and 24×7.

Hydrographic surveys: knowing the river

• Thalweg surveys track the deepest navigable channel on 22 National Waterways. They run weekly, fortnightly or monthly and also cover the Indo-Bangladesh Protocol route [1].
• They report the Least Available Depth (LAD), which sets how deep a loaded vessel can sit and how much cargo it can carry. Operators can then plan sailings in advance [1].
• Survey data allows targeted dredging on braided, silt-heavy rivers like the Brahmaputra.

Aids to Navigation (AtoN): guiding the vessel

• The Marine Aids to Navigation Act, 2021 replaced the Lighthouse Act, 1927. It makes the Centre responsible for AtoN and requires certified operators [2].
• Buoys, radar beacons and channel markers mark safe channels and hazards [1].
• India's first riverine lighthouses are coming up at four sites on NW-2 (Bogibeel, Pandu, Silghat and Biswanath Ghat), at about ₹84 crore. They will enable night navigation after NW-2 cargo rose 53% in 2024–25 [3].

Digital platforms: real-time decisions

• Real-time depth, route, vessel-movement and weather data help operators plan loads and transit times [1].
• Reliable delivery attracts shippers to a mode that costs about one-third of road and half of rail [1].

Survey (LAD) → Targeted dredging + AtoN → Real-time data
   → Assured draft & 24×7 transit → Shipper confidence → Cargo growth

Fig: How navigation infrastructure turns potential into performance

Limits: performance is still uneven

• Waterways carry only about 2% of India's freight, against 14% in China and 48% in Vietnam. Just 5 NWs carry 80% of inland cargo [4].
• Navigation aids cannot add depth. Shallow channels and too few vessels remain the core constraints [5].
• Only 32 of 111 NWs are operational [1]. Small operators need low-cost tools such as a mobile app [4].

Surveys, AtoN and digital platforms have replaced uncertainty with predictability, and that is the core of the shift. To sustain it, India should develop viable waterways selectively and plan dredging around river ecology. It also needs road and rail links under PM Gati Shakti. This would move India toward its 5% modal-share target by 2030 [4] and toward low-carbon logistics in line with SDG-9.