Proceedings of the 21st European Conference on Composite Materials, Abhyankar, Tzortzinis, Antonowitz, Giannakis, Sykaras, Leschik, Filippatos, Spitzer, Gude Abstract Maritime transport routes are vital for Europe as a key player in the global economy. The European Commission is seeking to transform it into a smart, green system, with the European Green Deal strategy targeting a 90% reduction in emissions by 2050 through sustainable alternatives. Ammonia (NH3) as an energy carrier offers the potential for fossil-free ship propulsion systems. However, storage of NH3 for use in the propulsion system is subject to specific operational and design space requirements. Specifically, storage solution must maximize NH3 capacity within limited installation space while ensuring compatibility with existing containerized arrangements for seamless integration into existing vessels, because NH3 requires three times the storage space for same energy output as compared to conventional fuels. Composite fibre-reinforced polymers, with their outstanding mechanical properties, combined with excellent chemical

Advances in Maritime Technology and Engineering, M.P. Mujeeb-Ahmed Byongug Jeong, Peilin Zhou, Hayoung Jang, Insik Hwang, Haibin Wang ABSTRACT The potential of ammonia as a sustainable marine fuel is accompanied by significant safety concerns. This study delves into the aftermath of ammonia tank leakage incidents, with a primary focus on evaluating the associated fire risks. Employing a general cargo ammonia-retrofit ship comprising of several high-pressure ammonia storage tanks, we conduct an in-depth analysis utilizing CFD modelling of the multifaceted factors that contribute to the severity of jet fire scenarios, encompassing different ammonia release rates, and leak directions (horizontal and vertical). The results show that in the event of fire, it poses significant safety concerns to the storage tanks, especially composite tanks, and therefore passive fire protection measure including the installation of the removable fire barrier is suggested as the design recommendation, apart from the active CO2 measures. The knowledge garnered from