According to shipbuilding industry sources Thursday, HD Hyundai Heavy Industries held a naming ceremony at its Ulsan shipyard for two 46,000-cubic-meter medium-sized gas carriers equipped with dual-fuel engines. The vessels are designed to run on ammonia and liquefied petroleum gas (LPG), representing the first commercial-scale ammonia-fueled ships.
The ships are equipped with safety systems including ammonia leak detection and recovery technologies, highlighting that ammonia-powered vessels are moving beyond experimental development and entering the commercialization phase.
Pressure to decarbonize shipping has intensified in recent years as the International Maritime Organization (IMO) tightens emissions regulations and major cargo owners increase environmental, social and governance (ESG) requirements.
Shipping companies are increasingly seeking alternatives to fossil fuel-based vessels to maintain long-term competitiveness.
Liquefied natural gas (LNG) has served as a transitional fuel, while methanol-powered ships have recently gained traction. However, LNG still produces carbon emissions, and methanol is not considered fully carbon-free. As a result, ammonia and hydrogen have emerged as leading candidates for zero-carbon maritime fuels.
Ammonia is widely viewed as the most viable next-generation fuel due to its higher storage density compared with liquefied hydrogen and the ability to store it under less extreme conditions. It also produces no carbon dioxide emissions during combustion, making it a zero-carbon fuel.
The International Energy Agency (IEA) projects that ammonia could account for up to 46 percent of shipping fuel by 2050, reflecting its technical and economic advantages.
The company has also collaborated with global energy and shipping firms such as Exmar and Trafigura, securing not only technology validation but also early demand for ammonia-powered vessels.
Challenges remain, however. Ammonia’s high toxicity makes safety a key concern, while the development of fuel supply infrastructure and cost competitiveness will determine the pace of adoption.
Industry watchers say the focus of shipbuilding competition is shifting from order volume to commercialization of eco-friendly fuel technologies. As the transition moves from LNG to methanol and now ammonia, companies that secure early technological leadership are expected to gain an advantage.
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