Ulsan Port Claims an Ammonia Bunkering World First

Why It Matters

Ammonia bunkering proves a viable low‑carbon fuel pathway, reducing greenhouse‑gas emissions for the global shipping fleet. Ports that can handle multiple alternative fuels will become critical enablers of the industry’s energy transition.

Key Takeaways

• Ulsan Port completed world’s first ammonia bunkering for a dual‑fuel gas carrier
• 600 tonnes of clean ammonia were transferred via port‑to‑ship (PTS) method
• 45,000‑ton tanker built by HD Hyundai Heavy Industries performed the bunkering
• Lotte Fine Chemical acted as the sustainable marine fuel supply demonstration operator
• Ulsan Port now offers LNG, methanol, and ammonia bunkering, boosting decarbonization

Pulse Analysis

Ammonia is emerging as a leading candidate for zero‑carbon marine propulsion because it can be produced from renewable electricity and burned without emitting CO₂. However, the fuel’s toxicity and handling requirements have slowed commercial adoption. Ulsan Port’s successful PTS transfer of 600 tons of clean ammonia marks a turning point, showing that large‑scale, safe bunkering is technically feasible and can be integrated into existing port operations.

The achievement rests on a coordinated ecosystem of shipbuilders, fuel suppliers, and regulators. HD Hyundai Heavy Industries delivered a 45,000‑ton class dual‑fuel carrier designed for ammonia combustion, while Lotte Fine Chemical supplied the fuel under strict safety protocols overseen by the Ministry of Oceans and Fisheries and local fire services. By using a port‑to‑ship method, the operation avoided on‑shore storage risks and demonstrated a repeatable process that other ports can emulate. Ulsan’s prior experience with LNG and methanol bunkering gave it the infrastructure and expertise to manage the complex logistics of ammonia handling.

For the broader shipping industry, the ability to bunker ammonia alongside LNG and methanol offers a flexible, resilient pathway toward decarbonisation. Vessel owners can hedge against regulatory uncertainty by accessing multiple low‑carbon fuels at a single hub, while ports that invest in multi‑fuel capabilities gain a competitive edge. As IMO tightens emissions targets, milestones like Ulsan’s will accelerate fleet conversions, stimulate fuel‑production investments, and shape future maritime fuel standards.