Ammonia

Japanese consortium to conduct study corrosion risks in ammonia fuel tanks

Consortium, led by ClassNK, will conduct a detailed study of the SCC mechanism involved in steel cracking due to the combined effects of mechanical stress and corrosion caused by liquid ammonia.

Published

12 months ago

August 7, 2025

Admin

ClassNK on Tuesday (5 August) announced that a consortium it formed with IHI Corporation, JFE Steel Corporation, Tohoku University, and Institute of Science Tokyo was selected by New Energy and Industrial Technology Development Organization (NEDO) to participate in the Feasibility Study Program on Energy and New Environmental Technology.

The consortium will promote the development of Stress Corrosion Cracking (SCC) Probability Evaluation Tools for Ammonia Fuel Storage Tank and Transportation Equipment. The consortium’s proposal to carry out the project was approved in May 2025 and an outsourcing agreement was concluded with NEDO recently.

Initially, the consortium will conduct a detailed study of the SCC mechanism involved in steel cracking due to the combined effects of mechanical stress and corrosion caused by liquid ammonia. Thereafter, the consortium plans to develop tools for easily and accurately assessing SCC probability.

Finally, opinions will be solicited from stakeholders to formulate risk-based maintenance procedures for fuel ammonia storage and transportation facilities, and marine fuel tanks ultimately to promote the expanded use of fuel ammonia.

Ammonia, which does not emit CO2 when burned, offers great potential under Japan’s Green Growth Strategy as a low-impact fuel for thermal power stations and ships. Accordingly, the safe and rational operation of fuel ammonia storage tanks and transportation facilities is critical. However, because liquefied ammonia for storage and transportation poses SCC risks to steel surfaces, reasonable and practical assessment procedures for inspection and maintenance are required.

In this project, ClassNK will be responsible for investigating the SCC mechanism of liquid ammonia and the actual use and condition of marine ammonia transport equipment, conducting long term SCC testing, and developing tools for easily and accurately assessing SCC probability.

The findings obtained through this project are planned to be reflected and released in ClassNK’s various guidelines.

Photo credit: ClassNK
Published: 7 August, 2025

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Ammonia

EXMAR’s “ANTWERPEN” completes first commercial voyage using ammonia bunker fuel

During its voyage from China to India, the vessel achieved ammonia dual-fuel operation fully in line with our expectations and design, demonstrating that the technology works in commercial service.

Published

9 hours ago

July 21, 2026

Admin

EXMAR’s “ANTWERPEN” completes first commercial voyage using ammonia bunker fuel

Belgian shipowner EXMAR on Monday (20 July) announced the successful completion of gas carrier ANTWERPEN’s first commercial voyage using ammonia as a marine fuel.

During its voyage from China to India, the vessel achieved ammonia dual-fuel operation fully in line with our expectations and design, demonstrating that the technology works in commercial service.

“Together with our partners, we continue to fine-tune the systems as we build on this outstanding achievement. We are proud of our crew for their excellent pioneering work,” the company said in a social media post.

Developed in close collaboration with HD Hyundai Heavy Industries, WinGD, Nord Gas Solutions (formerly Wärtsilä Gas Solutions), and Lloyd’s Register, ANTWERPEN is capable of carrying up to 46,000 m³ of ammonia or LPG and trading with close to zero emissions when using low-carbon ammonia fuel.

The vessel meets and exceeds current IMO emissions reduction targets, reducing greenhouse gases by up to 90% compared to conventional ships.

Manifold Times previously reported ANTWERPEN participated in a pipe-to-ship (PTS) ammonia bunkering operation in Ulsan Port.

The operation was carried out by Lotte Fine Chemical Co Ltd with 600 metric tonnes (mt) of green ammonia (NH3) supplied to ANTWERPEN.

Photo credit: EXMAR
Published: 21 July, 2026

Alternative Fuels

KR, HD Hyundai tap first ammonia dual-fuel sea trial to develop vessel operating standards

Trial generated data on the vessel’s fuel supply system and engine, which will provide a technical foundation for KR’s future development of domestic guidelines for ammonia-fuelled ships.

Published

5 days ago

July 17, 2026

Admin

KR, HD Hyundai tap first ammonia dual-fuel sea trial to develop vessel operating standards

Korean Register (KR) on Tuesday (14 July) said it is collaborating with HD Hyundai Heavy Industries (HHI) to establish a domestic operating environment for ammonia-fuelled vessels under the Ministry of Oceans and Fisheries’ Green Shipping Corridor Construction Support Project.

The initiative supports the development of ammonia as one of the most promising next-generation marine fuels.

HHI recently conducted a sea trial of Korea’s first ammonia dual-fuel propulsion vessel. The trial generated operational data on the vessel’s fuel supply system and engine, which will provide a valuable technical foundation for KR’s future development of domestic guidelines for environmentally friendly vessel operations and supporting wider maritime decarbonisation efforts.

A spokesperson for HD Hyundai, said: “Drawing on our group’s R&D capabilities and on-site technical expertise, we have made meaningful progress in advancing the application of ammonia as a marine fuel. We expect this to help enhance a sustainable maritime ecosystem while strengthening the competitiveness of Korea’s shipbuilding industry.”

Kim Daeheon, Executive Vice President of KR’s R&D Division, added: “The close collaboration between KR and HD Hyundai has enabled us to build the technical foundation for introducing ammonia-fueled vessels in Korea. We will continue to drive national projects forward together with HD Hyundai and establish technical standards befitting the era of Green Shipping Corridors.”

Photo credit: HD Hyundai Heavy Industries
Published: 17 July, 2026

Bunker Fuel

Singapore: Bunker fuel sales up by 1.6% on year in June 2026

4.67 million mt of various marine fuel grades were delivered at the world’s largest bunkering port in June, up from 4.59 million mt recorded during the similar month in 2025.

Published

6 days ago

July 15, 2026

Admin

Sales of marine fuel at Singapore port increased by 1.6% on year in June 2026, according to data from the Maritime and Port Authority of Singapore (MPA).

In total, 4.67 million metric tonnes (mt) (exact 4,669,100 mt) of various marine fuel grades were delivered at the world’s largest bunkering port in June, up from 4.59 million mt (4,594,700 mt) recorded during the similar month in 2025.

Deliveries of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in June (against on year) recorded respectively 2.03 million mt (+19.4% from 1.70 million mt), 2.20 million mt (-4.8% from 2.31 million mt), zero (-100% from 1,900 mt), 1,900 mt (-57.8% from 4,500 mt) and zero (from zero).

Bunker Jun

Bio-blended variants of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in June, (against on year) recorded respectively 5,300 mt (-86.3% from 38,800 mt), 30,700 mt (-73.1% from 114,300 mt), zero (from zero), zero (from zero) and zero (from zero). B100 biofuel bunkers, introduced in February last year, recorded 1,500 mt (+50% from 1,000 mt).

LNG and methanol sales were 55,000 mt (-0.72% from 55,400 mt) and zero (from zero) respectively. There were no recorded sales of ammonia for the month and so far since 2025.

Photo credit: Maritime and Port Authority of Singapore
Published: 15 July, 2026