India and South Korea can fast-track shipping decarbonisation through a dedicated green-ammonia corridor without waiting for a global carbon-pricing deal, according to a new report released ahead of the International Maritime Organization (IMO) session on 4 December 2026, which is set to decide on a binding carbon price. The report, published by India Narrative, argues that a focused bilateral corridor between the two nations could cut through the diplomatic gridlock that has repeatedly stalled multilateral negotiations.

The Proposed Corridor and Anchor Ports

The report recommends anchoring the corridor on two specific ports: Tuticorin or Kandla on the Indian side, and Ulsan — which Seoul has officially designated as its ammonia and methanol bunkering hub — on the Korean side. A handful of Korean-built, ammonia-capable vessels would operate between them, running on fuel produced by Indian electrolysers.

The logic is rooted in complementary strengths. South Korea has advanced shipbuilding capacity and ammonia-ready vessel technology but lacks domestic green fuel production. India, by contrast, has ambitious green-hydrogen and ammonia production targets but urgently needs reliable offtake buyers to make those investments viable.

Why Global Negotiations Are Not Enough

The report is notably blunt about the limits of multilateral diplomacy. It points out that many past IMO and comparable negotiations have failed to reach binding agreements. 'Shipowners cannot wait for diplomats and a vessel ordered today will burn fuel into the 2050s,' the report warned.

This comes amid a broader pattern of stalled climate diplomacy in the shipping sector, where the IMO's earlier decarbonisation strategy has drawn criticism for lacking enforceable timelines. The report argues that bilateral action is both faster and more credible. 'Two countries that can solve the problem bilaterally are sitting on opposite sides of the Bay of Bengal and the East China Sea, and they have barely begun to talk to each other seriously,' it noted.

Blended Finance to Bridge the Cost Gap

One of the central barriers to ammonia-ready shipping is cost. Dual-fuel and ammonia-capable vessels carry a significant price premium that independent shipowners find difficult to bridge through conventional bank debt. The report calls on both governments to deploy blended finance instruments to close this gap.

It points to India's approximately $3 billion Maritime Development Fund and notes that both countries have export credit agencies and development banks that could co-finance new vessels and bunkering infrastructure. Coordinated deployment of these tools, the report argues, could unlock a commercially viable model that other bilateral pairs could later replicate.

South Korea's Fuel Import Dependency and Renewable Lag

The case for South Korean participation is partly driven by its current fuel vulnerability. South Korea imported $518 million worth of ammonia in 2025, sourcing it predominantly from Indonesia, Saudi Arabia, China, Australia, and Malaysia. Renewables accounted for just 11.4 per cent of South Korea's electricity mix by end-2025, well short of the country's own 20 per cent target for 2030.

Diversifying ammonia sourcing toward India — where solar-powered electrolysis is becoming increasingly cost-competitive — would address both supply security and decarbonisation goals simultaneously.

What Comes Next

The timing of the report is deliberate: the IMO session on 4 December 2026 will be a critical juncture for global shipping climate policy. Whether or not a binding carbon price emerges, the report's authors suggest that India and South Korea need not wait. If the bilateral corridor is formalised, it could serve as a proof-of-concept that accelerates adoption across the broader Asia-Pacific shipping network.