Coastal Shipping and Inland Waterways: India's Forgotten Freight Decarbonisation Lever
India's coastal shipping and inland waterways are low-carbon freight options that remain underused relative to their route potential. On long bulk routes, coastal shipping can be among the cheapest freight modes, often achieving roughly Rs 0.80–1.20/tkm in favourable cases. For fertiliser distributors, coastal steel logistics, and aluminium export chains, these modes offer significant cost and carbon savings—provided the terminal infrastructure and multi-modal links are in place.
Key Takeaways
- India has 7,516 km of coastline with the geographic potential to connect major industrial clusters. While coastal shipping requires robust first- and last-mile port connectivity, it serves as a highly efficient trunk route. The freight intensity of coastal shipping is estimated at roughly 10 to 20 gCO₂ per tonne-kilometre (depending on vessel type, load factor, and fuel), making it generally far less carbon-intensive than diesel road transport and often comparable to electrified rail.
- Coastal shipping and inland waterways currently carry a small single-digit share of India's total freight, trailing significantly behind comparable economies with extensive maritime geography. Growth is primarily constrained by port handling times (vessel waiting and loading operations can stretch to 3 to 5 days, increasing working capital costs vs rapid road dispatch), limited multi-modal terminal infrastructure, and cabotage regulations that generally favour Indian-registered ships, though exceptions and permits are increasingly utilised.
- National Waterway 1 (NW-1) — the Ganga-Bhagirathi-Hooghly river system — has seen expanding commercial freight operations since 2017 under the Inland Waterways Authority of India (IWAI). While terminal development status varies by phase, barge facilities exist at Varanasi, Prayagraj, Patna, and Kolkata. The emission intensity of river barge transport is comparatively low (roughly 14 to 20 gCO₂/tkm), making it a viable alternative for bulk fertiliser and agri-commodity distribution into the eastern Gangetic Plain where navigability permits.
- For Indian industrial companies, coastal shipping and inland waterways represent a strategic modal shift option. Under optimal conditions on dense, long-haul routes, coastal shipping can achieve freight rates of roughly Rs 0.80 to 1.20 per tonne-km — highly competitive against DFC rail rates and substantially cheaper than road. However, these economics are route-specific and depend heavily on backhaul cargo availability and efficient port loading.
- These modes primarily reduce Scope 3 transport emissions for cargo owners rather than CCTS Scope 1 GEI. The Scope 1 emissions belong to the vessel operator. For industrial shippers, the benefit lies in voluntary sustainability reporting, supply chain decarbonisation, and meeting EU supply chain due diligence (CSDD) requirements, rather than direct mandatory CCTS compliance.
- The Sagarmala Programme outlines planned infrastructure investments of over Rs 5 lakh crore across port modernisation, connectivity, and coastal economic zones. While treating program-level ambitions as locked-in outcomes is premature, Sagarmala targets adding 100 to 150 million tonnes of coastal cargo throughput annually. The realization of these infrastructure plans will dictate whether coastal shipping can break out of its current niche.
Every freight decarbonisation discussion in India focuses on three options: electrified rail (primarily the Dedicated Freight Corridors), electric trucks (PM e-DRIVE and the EV fleet transition), and green hydrogen trucks. Coastal shipping and inland waterways — despite being available today and among the lowest-carbon freight modes — receive less attention. This is a significant analytical blind spot. For India's coastal industrial clusters — the aluminium smelters of Odisha, the fertiliser plants of Gujarat, and the chemical industry of Tamil Nadu — coastal shipping is a viable, low-carbon alternative for inter-regional bulk movements, provided the multimodal connectivity is managed correctly.
The neglect of coastal shipping in India's logistics planning partly reflects institutional history, but it also reflects genuine operational barriers. Port waiting and handling times add working capital costs that road freight avoids. Furthermore, the cabotage regime, while protective of the domestic fleet, historically limited vessel availability, though the Ministry of Ports has increasingly utilized permits and relaxations to ease these constraints. The Sagarmala Programme is designed to address infrastructural barriers systematically; its continued execution will be critical to making coastal shipping truly competitive for time-sensitive industrial cargo.
Sector-specific coastal and waterway freight opportunities
Industrial Freight — Coastal Shipping and Inland Waterway Opportunities by Sector
| Sector and Freight Flow | Current Mode | Coastal/Waterway Alternative | Estimated Carbon Saving | Cost Implication | Key Constraints to Manage |
|---|---|---|---|---|---|
| Fertiliser: Kandla to Eastern India | Road freight / Rail, diesel | Coastal: Kandla → Paradip/Kolkata via coastal vessel | Significant reduction vs road baseline | Often cheaper per tkm than road on this long route | Requires port storage and efficient domestic bagging/handling facilities |
| Steel: JSW Dolvi/Hajira to South India | Rail + road combination | Coastal: Hajira → Chennai/Krishnapatnam direct | Comparable to electrified rail | Competitive port-to-port on high volumes | Dedicated coastal berths; buyer-side jetty access |
| Aluminium: Angul to western India | Road / Rail | Coastal via Paradip port → Nhava Sheva/Mundra | Strong reduction vs road | Rail remains highly competitive; coastal viable on optimal routes | Improved rail connectivity to port; dedicated handling |
| Fertiliser: NW-1 (Ganga) for UP-Bihar | Road freight from eastern ports | Barge: Haldia → Varanasi/Patna terminals | Substantial reduction vs road baseline | Highly competitive where channel depth permits | Draft reliability in dry seasons; last-mile terminal to warehouse transport |
The alternative fuel transition in coastal shipping: navigating LNG and green methanol. India's coastal shipping fleet represents a targeted environment for alternative maritime fuels. The Sagarmala Programme has outlined plans for LNG bunkering facilities at major ports. While an LNG-fuelled vessel can theoretically emit up to 20 to 25 percent less CO₂ per tonne-km than a diesel equivalent, the actual climate benefit depends heavily on engine type and the mitigation of methane slip. Looking further ahead, green methanol or ammonia-fuelled vessels offer pathways to near-zero emission intensity. For industrial shippers tracking Scope 3 emissions under BRSR Core or EU regulations, selecting coastal carriers transitioning to low-emission fuels could eventually provide verifiable supply chain reductions. However, realizing these benefits requires careful lifecycle emissions accounting.
Frequently Asked Questions
What is the cabotage restriction and does it apply to industrial coastal freight?
India's cabotage policy restricts the carriage of cargo between Indian ports primarily to Indian-flagged, Indian-crewed vessels. While this was designed to protect the domestic shipping industry, it historically limited vessel availability and competition. However, this is not an absolute barrier; the Ministry of Shipping has progressively relaxed restrictions over the past decade. Foreign-flagged vessels can operate under specific permits or General Licenses when Indian capacity is insufficient, and blanket relaxations exist for certain specialized cargoes. For bulk industrial cargo (fertilisers, steel, aluminium), Indian-flagged capacity is generally utilized, but shippers should engage qualified freight brokers to navigate licensing options.
What is the current state of NW-1 (Ganga) for commercial freight?
NW-1 has seen expanding commercial freight operations over the last several years. With investments under the Jal Marg Vikas Project (JMVP), multimodal terminals exist at locations like Varanasi, Sahibganj, and Haldia. The primary cargoes moved include fertilisers, food grains, coal, and construction materials. However, operations are constrained by variable channel depths—especially during low-water seasons (October to February)—and the requirement for reliable last-mile connectivity from the river terminals to final warehouses. It is a viable mode for specific bulk goods but requires careful seasonal logistics planning.
Does using coastal shipping or inland waterways help a company's CCTS compliance?
For third-party carrier freight, switching to coastal shipping or inland waterways does not reduce CCTS Greenhouse Gas Emission Intensity (GEI). The CCTS gate-to-gate measurement boundary covers the industrial facility itself, not the outsourced logistics supply chain. The carrier's fuel use falls under the carrier's Scope 1 emissions. For the cargo owner, coastal and waterway freight represent Scope 3 emissions. While reducing these Scope 3 emissions is vital for voluntary sustainability reporting and EU supply chain due diligence, it does not alter mandatory CCTS compliance metrics.
Sources
- Ministry of Ports, Shipping, and Waterways — Sagarmala Programme — planned coastal freight targets and investments
- Inland Waterways Authority of India — National Waterway 1 — terminal locations and infrastructure development
- NITI Aayog — National Logistics Policy 2022 — modal shift ambitions
- International Maritime Organisation — GHG emission intensity of shipping modes — 4th IMO GHG Study 2020